LMK1C1102DQFR [TI]

LMK1C110x 1.8-V, 2.5-V, and 3.3-V LVCMOS Clock Buffer Family;
LMK1C1102DQFR
型号: LMK1C1102DQFR
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

LMK1C110x 1.8-V, 2.5-V, and 3.3-V LVCMOS Clock Buffer Family

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LMK1C1102, LMK1C1103, LMK1C1104  
SNAS791C – DECEMBER 2019 – REVISED JUNE 2021  
LMK1C110x 1.8-V, 2.5-V, and 3.3-V LVCMOS Clock Buffer Family  
1 Features  
3 Description  
High-performance 1:2, 1:3 or 1:4 LVCMOS clock  
buffer  
Very low output skew < 50 ps  
Extremely low additive jitter < 50 fs maximum  
– 7.5 fs typical at VDD = 3.3 V  
– 10 fs typical at VDD = 2.5 V  
– 19.2 fs typical at VDD = 1.8 V  
Very low propagation delay < 3 ns  
Synchronous output enable  
Supply voltage: 3.3 V, 2.5 V, or 1.8 V  
– 3.3-V tolerant input at all supply voltages  
fmax = 250 MHz for 3.3 V  
fmax = 200 MHz for 2.5 V and 1.8 V  
Operating temperature range: –40°C to 125°C  
Available in 8-pin TSSOP package  
Available in 8-pin WSON package  
The LMK1C110x is a modular, high-performance, low-  
skew, general-purpose clock buffer family from Texas  
Instruments.  
The entire family is designed with a modular approach  
in mind. Three different fan-out variations, 1:2, 1:3,  
1:4, are available.  
All of the devices within this family are pin-compatible  
to each other and backwards compatible to the  
CDCLVC110x family for easy handling.  
All family members share the same high performing  
characteristics such as low additive jitter, low skew,  
and wide operating temperature range.  
The LMK1C110x supports a synchronous output  
enable control (1G) which switches the outputs into  
a low state when 1G is low.  
2 Applications  
The LMK1C110x family operates in a 1.8-V, 2.5-V and  
3.3-V environment and are characterized for operation  
from –40°C to 125°C.  
Factory automation & control  
Telecommunications equipment  
Data center & enterprise computing  
Grid infrastructure  
Motor drives  
Medical imaging  
Device Information(1)  
PART NUMBER  
LMK1C1102  
LMK1C1103  
LMK1C1104  
LMK1C1102  
LMK1C1104  
PACKAGE  
BODY SIZE (NOM)  
TSSOP (8)  
3.00 mm × 4.40 mm  
WSON (8)  
2.00 mm × 2.00 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
.
CLKIN  
LVCMOS  
LVCMOS  
LVCMOS  
LVCMOS  
LVCMOS  
Y0  
Y1  
Y2  
Y3  
1G  
Functional Block Diagram  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
LMK1C1102, LMK1C1103, LMK1C1104  
SNAS791C – DECEMBER 2019 – REVISED JUNE 2021  
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Table of Contents  
1 Features............................................................................1  
2 Applications.....................................................................1  
3 Description.......................................................................1  
4 Revision History.............................................................. 2  
5 Device Comparison.........................................................3  
6 Pin Configuration and Functions...................................3  
7 Specifications.................................................................. 5  
7.1 Absolute Maximum Ratings ....................................... 5  
7.2 ESD Ratings .............................................................. 5  
7.3 Recommended Operating Conditions ........................5  
7.4 Thermal Information ...................................................5  
7.5 Electrical Characteristics ............................................6  
7.6 Timing Requirements .................................................7  
7.7 Typical Characteristics................................................7  
8 Detailed Description......................................................10  
8.1 Overview...................................................................10  
8.2 Functional Block Diagram.........................................10  
8.3 Feature Description...................................................10  
8.4 Device Functional Modes..........................................10  
9 Application and Implementation.................................. 11  
9.1 Application Information..............................................11  
9.2 Typical Application.................................................... 11  
10 Power Supply Recommendations..............................13  
11 Layout...........................................................................14  
11.1 Layout Guidelines................................................... 14  
11.2 Layout Example...................................................... 14  
12 Device and Documentation Support..........................15  
12.1 Receiving Notification of Documentation Updates..15  
12.2 Support Resources................................................. 15  
12.3 Trademarks.............................................................15  
12.4 Electrostatic Discharge Caution..............................15  
12.5 Glossary..................................................................15  
13 Mechanical, Packaging, and Orderable  
Information.................................................................... 15  
4 Revision History  
Changes from Revision B (June 2020) to Revision C (June 2021)  
Page  
Changed text format, numbering format for tables, figures, and cross-references throughout the document....1  
Added LMK1C1102/04 DQF (WSON) package..................................................................................................1  
Added the Device Comparison table.................................................................................................................. 3  
Added pinout diagrams for the DQF (WSON) package variant of the LMK1C1102 and LMK1C1104................3  
Added information pertaining to the layout of LMK1C1102/04 WSON package variant...................................14  
Removed Related Links section....................................................................................................................... 15  
Changes from Revision A (February 2020) to Revision B (June 2020)  
Page  
Added fan-out variation information to Description section................................................................................ 1  
Removed LMK1C1104PW pinout from the first page ........................................................................................ 1  
Added LMK1C1102 and LMK1C1103 pinout diagrams...................................................................................... 3  
Changes from Revision * (December 2019) to Revision A (February 2020)  
Page  
Added the LMK1C1102 and LMK1C1103 to the data sheet............................................................................... 1  
Changed the Power Supply Recommendations section...................................................................................13  
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SNAS791C – DECEMBER 2019 – REVISED JUNE 2021  
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5 Device Comparison  
Table 5-1. Device Comparison  
DEVICE  
NUMBER OF OUTPUTS  
PACKAGE  
LMK1C1102  
LMK1C1103  
LMK1C1104  
LMK1C1106  
LMK1C1108  
LMK1C1102  
LMK1C1104  
2
3
4
6
8
2
4
TSSOP (8), 3.00 mm x 4.40 mm  
TSSOP (14), 5.00 mm x 4.40 mm  
TSSOP (16), 5.00 mm x 4.40 mm  
WSON (8), 2.00 mm x 2.00 mm  
6 Pin Configuration and Functions  
CLKIN  
1G  
1
2
3
4
8
7
6
5
Y1  
CLKIN  
1G  
1
2
Y1  
8
7
NC  
VDD  
NC  
NC  
Y0  
Y0  
3
4
6
VDD  
NC  
GND  
GND  
5
Not to scale  
Not to scale  
1. The DQF (WSON) package is equivalent to the DFN  
package of other vendors.  
Figure 6-1. LMK1C1102 PW Package 8-Pin TSSOP  
Top View  
Figure 6-2. LMK1C1102 DQF Package 8-Pin WSON  
Top View  
CLKIN  
1G  
1
2
3
4
8
7
6
5
Y1  
CLKIN  
1G  
1
2
3
4
8
7
6
5
Y1  
NC  
VDD  
Y2  
Y3  
Y0  
Y0  
VDD  
Y2  
GND  
GND  
Not to scale  
Not to scale  
Figure 6-3. LMK1C1103 PW Package 8-Pin TSSOP  
Top View  
Figure 6-4. LMK1C1104 PW Package 8-Pin TSSOP  
Top View  
CLKIN  
1G  
1
2
Y1  
Y3  
8
7
Y0  
3
4
6
VDD  
Y2  
GND  
5
Not to scale  
1. The DQF (WSON) package is equivalent to the DFN package of other vendors.  
Figure 6-5. LMK1C1104 DQF Package 8-Pin WSON Top View  
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Table 6-1. Pin Functions  
PIN  
TYPE  
DESCRIPTION  
LMK1C  
1102  
LMK1C  
1103  
LMK1C  
1104  
NAME  
LVCMOS CLOCK INPUT  
CLKIN  
CLOCK OUTPUT ENABLE  
Single-ended clock input with internal 300-kΩ (typical) pulldown  
resistor to GND. Typically connected to a single-ended clock input.  
1
1
2
1
2
Input  
Input  
Global Output Enable with internal 300-kΩ (typical) pulldown resistor to  
GND. Typically connected to VDD with external pullup resistor.  
HIGH: outputs enabled  
1G  
2
LOW: outputs disabled  
LVCMOS CLOCK OUTPUT  
Y0  
Y1  
Y2  
Y3  
3
8
3
8
3
8
5
7
LVCMOS output. Typically connected to a receiver. Unused outputs  
can be left floating.  
Output  
5
SUPPLY VOLTAGE  
Power supply terminal. Typically connected to a 3.3-V, 2.5-V, or 1.8-  
V supply. The VDD pin is typically connected to an external 0.1-μF  
capacitor near the pin.  
VDD  
6
4
6
4
6
4
Power  
GND  
GROUND  
GND  
Power supply ground.  
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7 Specifications  
7.1 Absolute Maximum Ratings  
over operating free-air temperature range (unless otherwise noted)(1)  
MIN  
MAX  
UNIT  
VDD  
VCLKIN  
VIN  
Supply voltage  
Input voltage (CLKIN)  
Input voltage (1G)  
Output pins (Yn)  
–0.5  
3.6  
V
VYn  
IIN  
–0.5  
–20  
–50  
–65  
VDD + 0.3  
20  
Input current  
mA  
mA  
°C  
IO  
Continuous output current  
Storage temperature  
50  
Tstg  
150  
(1) Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress  
ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated  
under Recommended Operating Condition. Exposure to absolute-maximum-rated conditions for extended periods may affect device  
reliability.  
7.2 ESD Ratings  
VALUE  
UNIT  
Human body model (HBM), per ANSI/ESDA/  
JEDEC JS-001, all pins(1)  
±9000  
V(ESD)  
Electrostatic discharge  
V
Charged device model (CDM), per JEDEC  
specification JESD22-C101, all pins(2)  
±1500  
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.  
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.  
7.3 Recommended Operating Conditions  
over operating free-air temperature range (unless otherwise noted)  
MIN  
3.135  
2.375  
1.71  
–40  
NOM  
3.3  
MAX  
3.465  
2.625  
1.89  
125  
UNIT  
3.3-V supply  
2.5-V supply  
1.8-V supply  
VDD  
Core supply voltage  
2.5  
V
1.8  
TA  
TJ  
Operating free-air temperature  
Operating junction temperature  
°C  
°C  
–40  
150  
7.4 Thermal Information  
LMK1C1104  
THERMAL METRIC(1)  
DQF (WSON)  
8 PINS  
163  
PW (TSSOP)  
8 PINS  
181.9  
UNIT  
RqJA  
RqJC(top)  
RqJB  
YJT  
Junction-to-ambient thermal resistance  
°C/W  
°C/W  
°C/W  
°C/W  
°C/W  
Junction-to-case (top) thermal resistance  
Junction-to-board thermal resistance  
105.7  
76.6  
84.2  
111.6  
Junction-to-top characterization parameter  
Junction-to-board characterization parameter  
16.7  
16  
YJB  
83.9  
110.1  
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application  
report.  
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7.5 Electrical Characteristics  
VDD = 3.3 V ± 5 %, –40°C ≤ TA ≤ 125°C. Typical values are at VDD = 3.3 V, 25°C (unless otherwise noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
CURRENT CONSUMPTION  
IDD  
Core supply current, static  
Core supply current  
All-outputs disabled, fIN = 0 V  
25  
8
45  
15  
µA  
All-outputs disabled, fIN = 100 MHz  
All-outputs active, fIN = 100 MHz, CL = 5pF,  
VDD = 1.8 V  
14  
21  
33  
20  
30  
40  
IDD  
mA  
All-outputs active, fIN = 100 MHz, CL = 5pF,  
VDD = 2.5 V  
All-outputs active, fIN = 100 MHz, CL = 5pF,  
VDD = 3.3 V  
CLOCK INPUT  
VDD = 3.3 V  
DC  
DC  
250  
200  
fIN_SE  
Input frequency  
MHz  
V
VDD = 2.5 V and 1.8 V  
VIH  
Input high voltage  
Input low voltage  
Input slew rate  
0.7 x VDD  
VIL  
0.3 x VDD  
50  
dVIN/dt  
IIN_LEAK  
CIN_SE  
20% - 80% of input swing  
at 25°C  
0.1  
V/ns  
uA  
Input leakage current  
Input capacitance  
–50  
7
pF  
CLOCK OUTPUT FOR ALL VDD LEVELS  
VDD = 3.3 V  
250  
200  
55  
3
fOUT  
Output frequency  
MHz  
VDD = 2.5 V and 1.8 V  
ODC  
Output duty cycle  
With 50% duty cycle input (for all VDD)  
45  
%
tSTART  
t1G_ON  
t1G_OFF  
Start-up time before output is active See (1)  
ms  
Output enable time  
Output disable time  
See (2)  
See (3)  
5
cycles  
cycles  
5
CLOCK OUTPUT FOR VDD = 3.3 V ± 5%  
VOH  
Output high voltage  
Output low voltage  
IOH = 1 mA  
2.8  
V
VOL  
IOL = 1 mA  
0.2  
0.7  
tRISE-FALL  
Output rise and fall time  
20/80%, CL= 5 pF, fIN = 156.25 MHz  
0.35  
25  
ns  
tOUTPUT-  
Output-output skew  
See (4)  
50  
SKEW  
ps  
ns  
tPART-SKEW Part-to-part skew  
tPROP-DELAY Propagation delay  
450  
2
See (5)  
1.5  
8
fIN = 156.25 MHz, Input slew rate = 2 V/ns,  
Integration range = 12 kHz - 20 MHz  
tJITTER-ADD Additive Jitter  
20 fs, RMS  
Ω
ROUT  
Output impedance  
50  
CLOCK OUTPUT FOR VDD = 2.5 V ± 5%  
VOH  
Output high voltage  
Output low voltage  
IOH = 1 mA  
0.8 x VDD  
V
VOL  
IOL = 1 mA  
0.2 x VDD  
0.8  
tRISE-FALL  
Output rise and fall time  
20/80%, CL= 5 pF, fIN = 156.25 MHz  
0.33  
ns  
ps  
ns  
tOUTPUT-  
Output-output skew  
See (4)  
50  
SKEW  
tPART-SKEW Part-to-part skew  
tPROP-DELAY Propagation delay  
400  
2.5  
See (5)  
1.5  
11  
fIN = 156.25 MHz, Input slew rate = 2 V/ns,  
Integration range = 12 kHz - 20 MHz  
tJITTER-ADD Additive Jitter  
27 fs, RMS  
Ω
ROUT  
Output impedance  
52.5  
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VDD = 3.3 V ± 5 %, –40°C ≤ TA ≤ 125°C. Typical values are at VDD = 3.3 V, 25°C (unless otherwise noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
CLOCK OUTPUT FOR VDD = 1.8 V ± 5%  
VOH  
Output high voltage  
Output low voltage  
IOH = 1 mA  
IOL = 1 mA  
0.8 x VDD  
V
VOL  
0.2 x VDD  
1
tRISE-FALL  
Output rise and fall time  
20/80%, CL= 5 pF, fIN = 156.25 MHz  
See (4)  
0.38  
ns  
ps  
tOUTPUT-  
Output-output skew  
50  
SKEW  
tPART-SKEW Part-to-part skew  
tPROP-DELAY Propagation delay  
900  
3
ps  
ns  
See (5)  
1.5  
17.5  
60  
fIN = 156.25 MHz, Input slew rate = 2 V/ns,  
Integration range = 12 kHz - 20 MHz  
tJITTER-ADD Additive Jitter  
50 fs, RMS  
Ω
ROUT  
Output impedance  
GENERAL PURPOSE INPUT (1G)  
0.75 x  
VDD  
VIH  
VIL  
High-level input voltage  
Low-level input voltage  
V
0.25 x  
VDD  
IIH  
IIL  
Input high-level current  
Input low-level current  
VIH = VDD_REF  
VIL = GND  
–50  
–50  
50  
µA  
50  
(1) Measured from VDD stable to output active, when 1G = HIGH.  
(2) Measured from 1G rising edge crossing VIH to first rising edge of Yn.  
(3) Measured from 1G falling edge crossing VIL to last falling edge of Yn.  
(4) Measured from rising edge of any Yn output to any other Ym output.  
(5) Measured from rising edge of CLKIN to any Yn output.  
7.6 Timing Requirements  
VDD = 3.3 V ± 5 %, –40°C ≤ TA ≤ 125°C  
MIN  
NOM  
MAX  
UNIT  
POWER SUPPLY  
V/tRAMP VDD ramp rate  
0.1  
50  
V/ms  
7.7 Typical Characteristics  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
25  
20  
15  
10  
5
VDD = 1.8 V  
VDD = 2.5 V  
VDD = 3.3 V  
0
0
25  
50  
75  
100  
125  
Frequency (MHz)  
150  
175  
200  
225  
250  
D001  
Figure 7-1. Device Power Consumption vs. Clock Frequency (Load 5 pF)  
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Parameter Measurement Information  
VDD = 3.3-V, 2.5-V,  
or 1.8-V  
LVCMOS  
Output  
Zo = 50  
R = 50 Ω  
C = 2 pF  
Parasitic capacitance  
From measurement  
equipment  
Figure 8-1. Test Load Circuit  
VDD  
VDD = 3.3-V, 2.5-V,  
or 1.8-V  
R = 100 Ω  
LVCMOS  
Output  
Zo = 50  
Parasitic capacitance  
R = 100 Ω  
Figure 8-2. Application Load With 50-Ω Termination  
VDD = 3.3-V, 2.5-V,  
or 1.8-V  
LVCMOS  
Output  
Zo = 50  
Parasitic capacitance  
Figure 8-3. Application Load With Termination  
CLKIN  
1G  
tt1G_ONt  
Yn  
Figure 8-4. t1G_ON Output Enable Time  
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CLKIN  
1G  
tt1G_OFFt  
Yn  
Figure 8-5. t1G_OFF Output Disable Time  
CLKIN  
Yn  
tPROP-DELAY  
tOUTPUT-SKEW  
Yn+1  
Figure 8-6. Propagation Delay tPROP-DELAY and Output Skew tOUTPUT-SKEW  
80% x VDD  
Yn  
20% x VDD  
tRISE-FALL  
tRISE-FALL  
Figure 8-7. Rise and Fall Time tRISE-FALL  
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8 Detailed Description  
8.1 Overview  
The LMK1C110x family of devices is part of a low-jitter and low-skew LVCMOS fan-out buffer solution. For best  
signal integrity, it is important to match the characteristic impedance of the LMK1C110x's output driver with that  
of the transmission line.  
8.2 Functional Block Diagram  
CLKIN  
LVCMOS  
LVCMOS  
LVCMOS  
LVCMOS  
LVCMOS  
Y0  
Y1  
Y2  
Y3  
1G  
8.3 Feature Description  
The outputs of the LMK1C110x can be disabled by driving the synchronous output enable pin (1G) low. Unused  
output can be left floating to reduce overall system component cost. Supply and ground pins must be connected  
to VDD and GND, respectively.  
8.4 Device Functional Modes  
The LMK1C110x operates from 1.8-V, 2.5-V, or 3.3-V supplies. Table 8-1 shows the output logics of the  
LMK1C110x.  
Table 8-1. Output Logic Table  
INPUTS  
OUTPUTS  
CLKIN  
1G  
L
Yn  
L
X
L
H
L
H
H
H
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9 Application and Implementation  
Note  
Information in the following applications sections is not part of the TI component specification,  
and TI does not warrant its accuracy or completeness. TI’s customers are responsible for  
determining suitability of components for their purposes, as well as validating and testing their design  
implementation to confirm system functionality.  
9.1 Application Information  
The LMK1C110x family is a low additive jitter LVCMOS buffer solution that can operate up to 250-MHz at VDD  
=
3.3 V and 200 MHz at VDD = 2.5 V to 1.8 V. Low output skew as well as the ability for synchronous output enable  
is featured to simultaneously enable or disable buffered clock outputs as necessary in the application.  
9.2 Typical Application  
100-MHz  
50-Trace  
LVCMOS Oscillator  
V
CMOS  
DD  
Y0  
Y1  
CPU Clock  
CLKIN  
CMOS  
FPGA Clock  
100 ꢀ  
100 ꢀ  
50-Trace  
1G  
PLL  
Yn  
From CPU  
Reference  
GND  
Figure 9-1. System Configuration Example  
9.2.1 Design Requirements  
The LMK1C110x shown in Figure 9-1 is configured to fan out a 100-MHz signal from a local LVCMOS oscillator.  
The CPU is configured to control the output state through 1G.  
The configuration example is driving three LVCMOS receivers in a backplane application with the following  
properties:  
The CPU clock can accept a full swing DC-coupled LVCMOS signal. A series resistor is placed near the  
LMK1C110x to closely match the characteristic impedance of the trace to minimize reflections.  
The FPGA clock is similarly DC-coupled with an appropriate series resistor placed near the LMK1C110x.  
The PLL in this example can accept a lower amplitude signal, so a Thevenin's equivalent termination is used.  
The PLL receiver features internal biasing, so AC coupling can be used when common-mode voltage is  
mismatched.  
9.2.2 Detailed Design Procedure  
Unused outputs can be left floating. See the Power Supply Recommendations section for recommended filtering  
techniques.  
9.2.3 Application Curves  
The low additive jitter of the LMK1C110x is shown in Figure 9-2.  
Figure 9-3 shows the low-noise 156.25-MHz reference source with 25.6-fs RMS jitter driving the LMK1C110x,  
resulting in 26.7-fs RMS jitter when integrated from 12 kHz to 20 MHz at 3.3-V supply. The resultant additive  
jitter measured is a low 7.6-fs RMS for this configuration.  
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SNAS791C – DECEMBER 2019 – REVISED JUNE 2021  
www.ti.com  
Figure 9-4 shows the low-noise 156.25-MHz reference source with 25.6-fs RMS jitter driving the LMK1C110x,  
resulting in 27.5-fs RMS jitter when integrated from 12 kHz to 20 MHz at 2.5-V supply. The resultant additive  
jitter measured is a low 10-fs RMS for this configuration.  
Figure 9-5 shows the low-noise 156.25-MHz reference source with 25.6-fs RMS jitter driving the LMK1C110x,  
resulting in 32-fs RMS jitter when integrated from 12 kHz to 20 MHz at 1.8-V supply. The resultant additive jitter  
measured is a low 19.2-fs RMS for this configuration.  
Figure 9-2. LMK1C110x Reference Phase Noise  
25.6-fs (12 kHz to 20 MHz)  
Figure 9-3. LMK1C110x 3.3-V Output Phase Noise  
26.7-fs (12 kHz to 20 MHz)  
Figure 9-4. LMK1C110x 2.5-V Output Phase Noise  
27.5-fs (12 kHz to 20 MHz)  
Figure 9-5. LMK1C110x 1.8-V Output Phase Noise  
32-fs (12 kHz to 20 MHz)  
Copyright © 2021 Texas Instruments Incorporated  
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LMK1C1102, LMK1C1103, LMK1C1104  
SNAS791C – DECEMBER 2019 – REVISED JUNE 2021  
www.ti.com  
10 Power Supply Recommendations  
High-performance clock buffers can be sensitive to noise on the power supply, which may dramatically increase  
the additive jitter of the buffer. Thus, it is essential to manage any excessive noise from the system power  
supply, especially for applications where the jitter and phase noise performance is critical.  
Filter capacitors are used to eliminate the low-frequency noise from the power supply, where the bypass  
capacitors provide the very low impedance path for high-frequency noise and guard the power supply system  
against induced fluctuations. These bypass capacitors also provide instantaneous current surges as required  
by the device and should have low equivalent series resistance (ESR). To properly bypass the supply, the  
decoupling capacitors must be placed very close to the power-supply terminals, be connected directly to  
the ground plane, and laid out with short loops to minimize inductance. TI recommends adding as many  
high-frequency (for example, 0.1 µF) bypass capacitors, as there are supply terminals in the package. TI  
recommends, but does not require, inserting a ferrite bead between the board power supply and the chip power  
supply that isolates the high-frequency switching noises generated by the clock buffer; these beads prevent the  
switching noise from leaking into the board supply. It is imperative to choose an appropriate ferrite bead with  
very low DC resistance to provide adequate isolation between the board supply and the chip supply, as well  
as to maintain a voltage at the supply terminals that is greater than the minimum voltage required for proper  
operation.  
Figure 10-1 shows this recommended power supply decoupling method.  
V
CC  
Chip  
Supply  
Board  
Supply  
Ferrite Bead  
C
C
C
10 F  
1 F  
0.1 F  
GND  
GND  
GND  
Figure 10-1. Power Supply Decoupling  
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LMK1C1102, LMK1C1103, LMK1C1104  
SNAS791C – DECEMBER 2019 – REVISED JUNE 2021  
www.ti.com  
11 Layout  
11.1 Layout Guidelines  
Figure 11-1 shows a conceptual layout detailing recommended placement of power supply bypass capacitors.  
For component side mounting, use 0402 body size capacitors to facilitate signal routing. Keep the connections  
between the bypass capacitors and the power supply on the device as short as possible. Ground the other side  
of the capacitor using a low-impedance connection to the ground plane.  
Figure 11-2 provides a visual representation of the WSON device; it can be seen from the figure that similar to a  
DFN package, WSON doesn't have any leads.  
11.2 Layout Example  
Y1  
Y3  
CLKIN  
1G  
Y0  
VDD  
Y2  
Decoupling capacitor  
GND  
Figure 11-1. PCB Conceptual Layout  
Figure 11-2. Layout illustration for 8-pin WSON device  
Copyright © 2021 Texas Instruments Incorporated  
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LMK1C1102, LMK1C1103, LMK1C1104  
SNAS791C – DECEMBER 2019 – REVISED JUNE 2021  
www.ti.com  
12 Device and Documentation Support  
12.1 Receiving Notification of Documentation Updates  
To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on  
Subscribe to updates to register and receive a weekly digest of any product information that has changed. For  
change details, review the revision history included in any revised document.  
12.2 Support Resources  
TI E2Esupport forums are an engineer's go-to source for fast, verified answers and design help — straight  
from the experts. Search existing answers or ask your own question to get the quick design help you need.  
Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do  
not necessarily reflect TI's views; see TI's Terms of Use.  
12.3 Trademarks  
TI E2Eis a trademark of Texas Instruments.  
All trademarks are the property of their respective owners.  
12.4 Electrostatic Discharge Caution  
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled  
with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.  
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may  
be more susceptible to damage because very small parametric changes could cause the device not to meet its published  
specifications.  
12.5 Glossary  
TI Glossary  
This glossary lists and explains terms, acronyms, and definitions.  
13 Mechanical, Packaging, and Orderable Information  
The following pages include mechanical, packaging, and orderable information. This information is the most  
current data available for the designated devices. This data is subject to change without notice and revision of  
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.  
Copyright © 2021 Texas Instruments Incorporated  
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Product Folder Links: LMK1C1102 LMK1C1103 LMK1C1104  
 
 
 
 
 
 
 
PACKAGE OPTION ADDENDUM  
www.ti.com  
18-Jun-2021  
PACKAGING INFORMATION  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan  
Lead finish/  
Ball material  
MSL Peak Temp  
Op Temp (°C)  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4/5)  
(6)  
LMK1C1102DQFR  
LMK1C1102DQFT  
LMK1C1102PWR  
LMK1C1103PWR  
LMK1C1104DQFR  
LMK1C1104DQFT  
LMK1C1104PWR  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
WSON  
WSON  
TSSOP  
TSSOP  
WSON  
WSON  
TSSOP  
DQF  
DQF  
PW  
8
8
8
8
8
8
8
3000 RoHS & Green  
250 RoHS & Green  
NIPDAUAG  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
L1C2  
L1C2  
NIPDAUAG  
NIPDAU  
2000 RoHS & Green  
2000 RoHS & Green  
3000 RoHS & Green  
LMK1C2  
LMK1C3  
L1C4  
PW  
NIPDAU  
DQF  
DQF  
PW  
NIPDAUAG  
NIPDAUAG  
NIPDAU  
250  
RoHS & Green  
L1C4  
2000 RoHS & Green  
LMK1C4  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance  
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may  
reference these types of products as "Pb-Free".  
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.  
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based  
flame retardants must also meet the <=1000ppm threshold requirement.  
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation  
of the previous line and the two combined represent the entire Device Marking for that device.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
18-Jun-2021  
(6)  
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two  
lines if the finish value exceeds the maximum column width.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
19-Jun-2021  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
LMK1C1102DQFR  
LMK1C1102DQFT  
LMK1C1102PWR  
LMK1C1103PWR  
LMK1C1104DQFR  
LMK1C1104DQFT  
LMK1C1104PWR  
WSON  
WSON  
TSSOP  
TSSOP  
WSON  
WSON  
TSSOP  
DQF  
DQF  
PW  
8
8
8
8
8
8
8
3000  
250  
178.0  
178.0  
330.0  
330.0  
178.0  
178.0  
330.0  
8.4  
8.4  
2.25  
2.25  
7.0  
2.25  
2.25  
3.6  
1.0  
1.0  
1.6  
1.6  
1.0  
1.0  
1.6  
4.0  
4.0  
8.0  
8.0  
4.0  
4.0  
8.0  
8.0  
8.0  
Q2  
Q2  
Q1  
Q1  
Q2  
Q2  
Q1  
2000  
2000  
3000  
250  
12.4  
12.4  
8.4  
12.0  
12.0  
8.0  
PW  
7.0  
3.6  
DQF  
DQF  
PW  
2.25  
2.25  
7.0  
2.25  
2.25  
3.6  
8.4  
8.0  
2000  
12.4  
12.0  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
19-Jun-2021  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
LMK1C1102DQFR  
LMK1C1102DQFT  
LMK1C1102PWR  
LMK1C1103PWR  
LMK1C1104DQFR  
LMK1C1104DQFT  
LMK1C1104PWR  
WSON  
WSON  
TSSOP  
TSSOP  
WSON  
WSON  
TSSOP  
DQF  
DQF  
PW  
8
8
8
8
8
8
8
3000  
250  
205.0  
205.0  
853.0  
853.0  
205.0  
205.0  
853.0  
200.0  
200.0  
449.0  
449.0  
200.0  
200.0  
449.0  
33.0  
33.0  
35.0  
35.0  
33.0  
33.0  
35.0  
2000  
2000  
3000  
250  
PW  
DQF  
DQF  
PW  
2000  
Pack Materials-Page 2  
PACKAGE OUTLINE  
DQF0008A  
WSON - 0.8 mm max height  
S
C
A
L
E
6
.
0
0
0
PLASTIC SMALL OUTLINE - NO LEAD  
2.1  
1.9  
A
B
PIN 1 INDEX AREA  
2.1  
1.9  
0.8  
0.7  
C
SEATING PLANE  
0.05 C  
0.05  
0.00  
SYMM  
(0.2) TYP  
4
5
SYMM  
2X 1.5  
6X 0.5  
8
1
0.3  
8X  
0.2  
0.1  
0.05  
0.7  
0.5  
C A B  
PIN 1 ID  
0.6  
0.4  
7X  
4220563/A 03/2021  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
DQF0008A  
WSON - 0.8 mm max height  
PLASTIC SMALL OUTLINE - NO LEAD  
SEE SOLDER MASK  
DETAIL  
SYMM  
(0.8)  
8
8X (0.25)  
1
SYMM  
6X (0.5)  
(R0.05) TYP  
4
5
7X (0.7)  
(1.7)  
LAND PATTERN EXAMPLE  
EXPOSED METAL SHOWN  
SCALE: 30X  
0.07 MIN  
ALL AROUND  
0.07 MAX  
ALL AROUND  
METAL UNDER  
SOLDER MASK  
METAL EDGE  
EXPOSED METAL  
SOLDER MASK  
OPENING  
EXPOSED  
METAL  
SOLDER MASK  
OPENING  
NON SOLDER MASK  
DEFINED  
SOLDER MASK DEFINED  
(PREFERRED)  
SOLDER MASK DETAILS  
4220563/A 03/2021  
NOTES: (continued)  
3. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature  
number SLUA271 (www.ti.com/lit/slua271).  
www.ti.com  
EXAMPLE STENCIL DESIGN  
DQF0008A  
WSON - 0.8 mm max height  
PLASTIC SMALL OUTLINE - NO LEAD  
(0.8)  
8X (0.25)  
1
8
SYMM  
6X (0.5)  
(R0.05) TYP  
5
4
SYMM  
(1.7)  
7X (0.7)  
SOLDER PASTE EXAMPLE  
BASED ON 0.125 MM THICK STENCIL  
SCALE: 30X  
4220563/A 03/2021  
NOTES: (continued)  
4. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
www.ti.com  
PACKAGE OUTLINE  
PW0008A  
TSSOP - 1.2 mm max height  
S
C
A
L
E
2
.
8
0
0
SMALL OUTLINE PACKAGE  
C
6.6  
6.2  
SEATING PLANE  
TYP  
PIN 1 ID  
AREA  
A
0.1 C  
6X 0.65  
8
5
1
3.1  
2.9  
NOTE 3  
2X  
1.95  
4
0.30  
0.19  
8X  
4.5  
4.3  
1.2 MAX  
B
0.1  
C A  
B
NOTE 4  
(0.15) TYP  
SEE DETAIL A  
0.25  
GAGE PLANE  
0.15  
0.05  
0.75  
0.50  
0 - 8  
DETAIL A  
TYPICAL  
4221848/A 02/2015  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not  
exceed 0.15 mm per side.  
4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.  
5. Reference JEDEC registration MO-153, variation AA.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
PW0008A  
TSSOP - 1.2 mm max height  
SMALL OUTLINE PACKAGE  
8X (1.5)  
SYMM  
8X (0.45)  
(R0.05)  
1
4
TYP  
8
SYMM  
6X (0.65)  
5
(5.8)  
LAND PATTERN EXAMPLE  
SCALE:10X  
SOLDER MASK  
OPENING  
SOLDER MASK  
OPENING  
METAL UNDER  
SOLDER MASK  
METAL  
0.05 MAX  
ALL AROUND  
0.05 MIN  
ALL AROUND  
SOLDER MASK  
DEFINED  
NON SOLDER MASK  
DEFINED  
SOLDER MASK DETAILS  
NOT TO SCALE  
4221848/A 02/2015  
NOTES: (continued)  
6. Publication IPC-7351 may have alternate designs.  
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.  
www.ti.com  
EXAMPLE STENCIL DESIGN  
PW0008A  
TSSOP - 1.2 mm max height  
SMALL OUTLINE PACKAGE  
8X (1.5)  
SYMM  
(R0.05) TYP  
8X (0.45)  
1
4
8
SYMM  
6X (0.65)  
5
(5.8)  
SOLDER PASTE EXAMPLE  
BASED ON 0.125 mm THICK STENCIL  
SCALE:10X  
4221848/A 02/2015  
NOTES: (continued)  
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
9. Board assembly site may have different recommendations for stencil design.  
www.ti.com  
IMPORTANT NOTICE AND DISCLAIMER  
TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE  
DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS”  
AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY  
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD  
PARTY INTELLECTUAL PROPERTY RIGHTS.  
These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate  
TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable  
standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you  
permission to use these resources only for development of an application that uses the TI products described in the resource. Other  
reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party  
intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages,  
costs, losses, and liabilities arising out of your use of these resources.  
TI’s products are provided subject to TI’s Terms of Sale (https:www.ti.com/legal/termsofsale.html) or other applicable terms available either  
on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s  
applicable warranties or warranty disclaimers for TI products.IMPORTANT NOTICE  
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2021, Texas Instruments Incorporated  

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