ICS87946AYI-147LF [IDT]

Low Skew Clock Driver, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X 7 MM, 1.40 MM HEIGHT, LQFP-32;
ICS87946AYI-147LF
型号: ICS87946AYI-147LF
厂家: INTEGRATED DEVICE TECHNOLOGY    INTEGRATED DEVICE TECHNOLOGY
描述:

Low Skew Clock Driver, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X 7 MM, 1.40 MM HEIGHT, LQFP-32

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文件: 总14页 (文件大小:253K)
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Low Skew, ÷1, ÷2 LVCMOS/LVTTL  
Clock Generator  
ICS87946I-147  
DATASHEET  
General Description  
Features  
The ICS87946I-147 is a low skew, ÷1, ÷2 LVCMOS/LVTTL Clock  
Generator. The ICS87946I-147 has two selectable single ended  
clock inputs. The single ended clock inputs accept LVCMOS or  
LVTTL input levels. The low impedance LVCMOS/LVTTL outputs are  
designed to drive 50series or parallel terminated transmission  
lines. The effective fanout can be increased from 10 to 20 by utilizing  
the ability of the outputs to drive two series terminated lines.  
Ten single ended LVCMOS/LVTTL outputs,  
7typical output impedance  
Selectable LVCMOS/LVTTL CLK0 and CLK1 inputs  
CLK0 and CLK1 can accept the following input levels:  
LVCMOS and LVTTL  
Maximum input frequency: 250MHz  
Bank skew: 30ps (maximum)  
The divide select inputs, DIV_SELx, control the output frequency of  
each bank. The outputs can be utilized in the ÷1, ÷2 or a  
combination of ÷1 and ÷2 modes. The master reset input, MR/nOE,  
resets the internal frequency dividers and also controls the active  
and high impedance states of all outputs.  
Output skew: 175ps (maximum)  
Part-to-part skew: 850ps (maximum)  
Multiple frequency skew: 200ps (maximum)  
3.3V core, 3.3V or 2.5V output supply modes  
-40°C to 85°C ambient operating temperature  
Lead-free packaging  
The ICS87946I-147 is characterized at full 3.3V for input VDD, and  
mixed 3.3V and 2.5V for output operating supply mode. Guaranteed  
bank, output and part-to-part skew characteristics make the  
ICS87946I-147 ideal for those clock distribution applications  
demanding well defined performance and repeatability.  
Block Diagram  
Pin Assignment  
Pulldown  
CLK_SEL  
Pullup  
CLK0  
CLK1  
0
1
0
1
÷1  
÷2  
3
3
QA[0:2]  
QB[0:2]  
32 31 30 29 28 27 26 25  
Pullup  
Pullup  
1
2
3
4
5
6
7
8
CLK_SEL  
GND  
24  
23  
22  
21  
20  
VDD  
QB0  
VDDB  
QB1  
GND  
Pulldown  
DIV_SELA  
CLK0  
0
1
CLK1  
DIV_SELA  
DIV_SELB  
DIV_SELC  
GND  
QB2  
VDDB  
VDDC  
19  
18  
17  
Pulldown  
DIV_SELB  
9
10 11 12 13 14 15 16  
0
1
4
QC[0:3]  
Pulldown  
Pulldown  
ICS87946I-147  
32-Lead LQFP  
DIV_SELC  
MR/nOE  
7mm x 7mm x 1.4mm package body  
Y Package  
Top View  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
1
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Pin Descriptions and Characteristics  
Table 1. Pin Descriptions  
Number  
Name  
Type  
Description  
Clock select input. When HIGH, selects CLK1.  
When LOW, selects CLK0. LVCMOS / LVTTL interface levels.  
1
CLK_SEL  
Input  
Pulldown  
2
VDD  
Power  
Input  
Positive supply pin.  
3, 4  
CLK0, CLK1  
Pullup  
Single-ended clock inputs. LVCMOS/LVTTL interface levels.  
Controls frequency division for Bank A outputs. See Table 3  
LVCMOS/LVTTL interface levels.  
5
6
7
DIV_SELA  
DIV_SELB  
DIV_SELC  
Input  
Input  
Input  
Pulldown  
Controls frequency division for Bank B outputs. See Table 3.  
LVCMOS/LVTTL interface levels.  
Pulldown  
Pulldown  
Controls frequency division for Bank C outputs. See Table 3.  
LVCMOS/LVTTL interface levels.  
8, 11, 15, 20,  
24, 27, 31  
GND  
VDDC  
Power  
Power  
Output  
Power  
Output  
Power  
Output  
Power supply ground.  
9, 13, 17  
Output supply pins for Bank C outputs.  
10, 12,  
14, 16  
QC0, QC1,  
QC2, QC3  
Single-ended Bank C clock outputs. LVCMOS/LVTTL interface levels.  
7typical output impedance.  
18, 22  
VDDB  
Output supply pins for Bank B outputs.  
19,  
21, 23  
QB2,  
QB1, QB0  
Single-ended Bank B clock outputs. LVCMOS/LVTTL interface levels.  
7typical output impedance.  
25, 29  
VDDA  
Output supply pins for Bank A outputs.  
26,  
28, 30  
QA2,  
QA1, QA0  
Single-ended Bank A clock outputs. LVCMOS/LVTTL interface levels.  
7typical output impedance.  
Active HIGH Master Reset. Active LOW Output Enable. When logic HIGH,  
the internal dividers are reset and the outputs are (High-Impedance). When  
logic LOW, the internal dividers and the outputs are enabled. See Table 3.  
LVCMOS/LVTTL interface levels.  
32  
MR/nOE  
Input  
Pulldown  
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.  
Table 2. Pin Characteristics  
Symbol  
CIN  
Parameter  
Test Conditions  
Minimum  
Typical  
Maximum  
Units  
pF  
Input Capacitance  
4
CPD  
Power Dissipation Capacitance VDD = VDDA = VDDB = VDDC = 3.6V  
Input Pullup Resistor  
25  
51  
51  
7
pF  
RPULLUP  
RPULLDOWN  
ROUT  
k  
k  
Input Pulldown Resistor  
Output Impedance  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
2
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Function Tables  
Table 3. Clock Input Function Table  
Inputs  
Outputs  
MR/nOE  
DIV_SELA  
DIV_SELB  
DIV_SELC  
QA0:QA2  
High-Impedance  
fIN/1  
QB0:QB2  
High-Impedance  
Active  
QC0:QC3  
High-Impedance  
Active  
1
0
0
0
0
0
0
X
0
X
X
X
0
X
X
X
X
X
0
1
fIN/2  
Active  
Active  
X
X
X
X
Active  
fIN/1  
Active  
1
Active  
fIN/2  
Active  
X
X
Active  
Active  
fIN/1  
1
Active  
Active  
fIN/2  
Absolute Maximum Ratings  
NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress  
specifications only. Functional operation of the product at these conditions or any conditions beyond those listed in the DC Characteristics or  
AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability.  
Item  
Rating  
Supply Voltage, VDD  
Inputs, VI  
4.6V  
-0.5V to VDD + 0.5V  
-0.5V to VDDX+ 0.5V  
47.9C/W (0 lfpm)  
-65C to 150C  
Outputs, VO  
Package Thermal Impedance, JA  
Storage Temperature, TSTG  
DC Electrical Characteristics  
Table 4A. Power Supply DC Characteristics, V = V  
= V  
= V  
= 3.3V 0.3V, T = -40°C to 85°C  
DDC A  
DD  
DDA  
DDB  
Symbol  
Parameter  
Test Conditions  
Minimum  
3.0  
Typical  
3.3  
Maximum  
Units  
V
VDD  
Positive Supply Voltage  
3.6  
3.6  
55  
VDDA, VDDB, VDDC Output Supply Voltage  
3.0  
3.3  
V
IDD  
Power Supply Current  
Output Supply Current  
mA  
mA  
IDDA, IDDB, IDDC  
23  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
3
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Table 4B. Power Supply DC Characteristics, V = 3.3V 5%, V  
= V  
= V  
= 2.5V 5%, T = -40°C to 85°C  
DDC A  
DD  
DDA  
DDB  
Symbol  
Parameter  
Test Conditions  
Minimum  
3.135  
Typical  
3.3  
Maximum  
3.465  
2.625  
55  
Units  
V
VDD  
Positive Supply Voltage  
VDDA, VDDB, VDDC Output Supply Voltage  
2.375  
2.5  
V
IDD  
Power Supply Current  
Output Supply Current  
mA  
mA  
IDDA, IDDB, IDDC  
22  
Table 4C. LVCMOS/LVTTL DC Characteristics, V = V  
= V  
= V  
= 3.3V 0.3V, T = -40°C to 85°C  
DDC A  
DD  
DDA  
DDB  
Symbol Parameter  
Test Conditions  
Minimum  
Typical  
Maximum  
Units  
VIH  
VIL  
Input High Voltage  
2
VDD + 0.3  
V
MR/nOE,  
DIV_SELA, DIV_SELB,  
DIV_SELC, CLK_SEL  
Input  
Low  
Voltage  
-0.3  
-0.3  
0.8  
1.3  
150  
5
V
CLK0, CLK1  
V
MR/nOE,  
DIV_SELA, DIV_SELB,  
DIV_SELC, CLK_SEL  
Input  
High  
Current  
V
DD = VIN = 3.6V  
DD = VIN = 3.6V  
µA  
µA  
µA  
IIH  
CLK0, CLK1  
V
MR/nOE,  
DIV_SELA, DIV_SELB,  
DIV_SELC, CLK_SEL  
Input  
Low  
Current  
VDD = 3.6V, VIN = 0V  
VDD = 3.6V, VIN = 0V  
-5  
IIL  
CLK0, CLK1  
-150  
2.6  
µA  
V
VOH  
VOL  
IOZL  
IOZH  
Output High Voltage; NOTE 1  
Output Low Voltage; NOTE 1  
Output Hi-Z Current Low  
VDDA = VDDB = VDDC = 3.6V  
VDDA = VDDB = VDDC = 3.63V  
VDDA = VDDB = VDDC = 3.63V  
VDDA = VDDB = VDDC = 3.63V  
0.5  
5
V
-5  
µA  
µA  
Output Hi-Z Current High  
NOTE 1: Outputs terminated with 50to VDDx/2. See Parameter Measurement Information section. Load Test Circuit diagrams.  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
4
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Table 4D. LVCMOS/LVTTL DC Characteristics, V = 3.3V 5%, V  
= V  
= V  
= 2.5V 5%, T = -40°C to 85°C  
DDC A  
DD  
DDA  
DDB  
Symbol Parameter  
Test Conditions  
Minimum  
Typical  
Maximum  
Units  
VIH  
VIL  
Input High Voltage  
2
VDD + 0.3  
V
MR/nOE,  
DIV_SELA, DIV_SELB,  
DIV_SELC, CLK_SEL  
Input  
Low  
Voltage  
-0.3  
-0.3  
0.8  
1.3  
150  
5
V
CLK0, CLK1  
V
MR/nOE,  
DIV_SELA, DIV_SELB,  
DIV_SELC, CLK_SEL  
Input  
High  
Current  
V
DD = VIN = 3.465V  
µA  
µA  
µA  
IIH  
CLK0, CLK1  
VDD = VIN = 3.465V  
MR/nOE,  
DIV_SELA, DIV_SELB,  
DIV_SELC, CLK_SEL  
Input  
Low  
Current  
VDD = 3.465V, VIN = 0V  
-5  
IIL  
CLK0, CLK1  
VDD = 3.465V, VIN = 0V  
-150  
1.8  
µA  
V
Output High Voltage;  
NOTE 1  
VOH  
VDDA = VDDB = VDDC = 2.625V  
VOL  
IOZL  
IOZH  
Output Low Voltage; NOTE 1  
Output Hi-Z Current Low  
Output Hi-Z Current High  
VDDA = VDDB = VDDC = 2.625V  
VDDA = VDDB = VDDC = 2.625V  
VDDA = VDDB = VDDC = 2.625V  
0.5  
5
V
-5  
µA  
µA  
NOTE 1: Outputs terminated with 50to VDDx/2. See Parameter Measurement Information section. Load Test Circuit diagrams.  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
5
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
AC Electrical Characteristics  
Table 5A. AC Characteristics, V = V  
= V  
= V  
= 3.3V 0.3V, T = -40°C to 85°C  
DDC A  
DD  
DDA  
DDB  
Symbol Parameter  
Test Conditions  
Minimum  
Typical  
Maximum  
Units  
fMAX  
Output Frequency  
250  
MHz  
Propagation Delay;  
NOTE 1  
tPD  
ƒ 250MHz  
2
5
ns  
tsk(b)  
tsk(o)  
Bank Skew, NOTE 2, 7  
Output Skew; NOTE 3, 7  
Measured on rising edge at VDDX/2  
Measured on rising edge at VDDX/2  
30  
ps  
ps  
175  
Multiple Frequency Skew;  
NOTE 4, 7  
tsk(w)  
Measured on rising edge at VDDX/2  
275  
850  
ps  
ps  
Part-to-Part Skew;  
NOTE 5, 7  
tsk(pp)  
Measured on rising edge at VDDX/2  
20% to 80%  
tR / tF  
tPW  
Output Rise/Fall Time; NOTE 6  
Output Pulse Width  
400  
950  
ps  
%
tPERIOD/2 - 1  
tPERIOD/2  
tPERIOD/2 + 1  
Output Enable Time;  
NOTE 6  
tEN  
ƒ = 1 0 M H z  
ƒ= 10MHz  
3
3
n s  
ns  
tDIS  
Output Disable Time; NOTE 6  
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is  
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium  
has been reached under these conditions.  
NOTE 1: Measured from VDD/2 of the input to VDDX/2 of the output.  
NOTE 2: Defined as skew within a bank of outputs at the same supply voltage and with equal load conditions.  
NOTE 3: Defined as skew across banks of outputs at the same supply voltage and with equal load conditions. Measured at VDDX/2.  
NOTE 4: Defined as skew across banks of outputs operating at different frequencies with the same supply voltage and equal load conditions.  
NOTE 5: Defined as skew between outputs on different devices operating at the same supply voltage and with equal load conditions. Using  
the same type of inputs on each device, the outputs are measured at VDDX/2.  
NOTE 6: These parameters are guaranteed by characterization. Not tested in production.  
NOTE 7: This parameter is defined in accordance with JEDEC Standard 65.  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
6
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Table 5B. AC Characteristics, V = 3.3V 5%, V  
= V  
= V  
= 2.5V 5%, T = -40°C to 85°C  
DDC A  
DD  
DDA  
DDB  
Symbol Parameter  
fMAX Output Frequency  
Test Conditions  
Minimum  
Typical  
Maximum  
Units  
250  
MHz  
Propagation Delay;  
NOTE 1  
tPD  
ƒ 250MHz  
2
5
ns  
tsk(b)  
tsk(o)  
Bank Skew, NOTE 2, 7  
Output Skew; NOTE 3, 7  
Measured on rising edge at VDDX/2  
Measured on rising edge at VDDX/2  
35  
ps  
ps  
175  
Multiple Frequency Skew;  
NOTE 4, 7  
tsk(w)  
Measured on rising edge at VDDX/2  
200  
875  
ps  
ps  
Part-to-Part Skew;  
NOTE 5, 7  
tsk(pp)  
Measured on rising edge at VDDX/2  
20% to 80%  
tR / tF  
tPW  
Output Rise/Fall Time; NOTE 6  
Output Pulse Width  
400  
950  
ps  
%
tPERIOD/2 - 1  
tPERIOD/2  
tPERIOD/2 + 1  
Output Enable Time;  
NOTE 6  
tEN  
ƒ = 1 0 M H z  
ƒ= 10MHz  
3
3
n s  
ns  
tDIS  
Output Disable Time; NOTE 6  
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is  
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium  
has been reached under these conditions.  
NOTE 1: Measured from VDD/2 of the input to VDDX/2 of the output.  
NOTE 2: Defined as skew within a bank of outputs at the same supply voltage and with equal load conditions.  
NOTE 3: Defined as skew across banks of outputs at the same supply voltage and with equal load conditions. Measured at VDDX/2.  
NOTE 4: Defined as skew across banks of outputs operating at different frequencies with the same supply voltage and equal load conditions.  
NOTE 5: Defined as skew between outputs on different devices operating at the same supply voltage and with equal load conditions. Using  
the same type of inputs on each device, the outputs are measured at VDDX/2.  
NOTE 6: These parameters are guaranteed by characterization. Not tested in production.  
NOTE 7: This parameter is defined in accordance with JEDEC Standard 65.  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
7
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Parameter Measurement Information  
2.05V 5%  
1.65V 0.15V  
1.25V 5%  
SCOPE  
SCOPE  
V
V
DD  
DD,  
V
V
V
DDA,  
DDB,  
DDC  
V
DDA,  
Qx  
Qx  
V
V
DDB, DDC  
GND  
GND  
-1.65V 0.15V  
-1.25V 5%  
3.3V Core/3.3V Output Load AC Test Circuit  
3.3V Core/2.5V Output Load AC Test Circuit  
Part 1  
VDDO  
VDDO  
Qx  
Qy  
2
2
Qx  
Qy  
Part 2  
VDDO  
2
VDDO  
2
tsk(o)  
tsk(pp)  
Output Skew  
Part-to-Part Skew  
VDDx  
2
QBx, QCx  
QAx  
QX0:QXx  
QX0:QXx  
VDDx  
2
tsk(ω)  
tsk(b)  
Where X = Bank A, B or C  
Bank Skew  
Multiple Frequency Skew  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
8
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Parameter Measurement Information, continued  
VDDx  
2
VDDx  
2
VDDx  
2
VDDx  
2
QAx,  
QBx, QCx  
CLK0, CLK1  
tPW  
tPERIOD  
VDDx  
2
QAx,  
QBx, QCx  
tPW  
odc =  
t
PD  
tPERIOD  
tPW & tPERIOD  
Propagation Delay  
80%  
tF  
80%  
tR  
20%  
20%  
QAx,  
QBx, QCx  
Output Rise/Fall Time  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
9
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Application Information  
Recommendations for Unused Input and Output Pins  
Inputs:  
OUTputs:  
LVCMOS Control Pins  
LVCMOS Outputs  
All control pins have internal pulldowns; additional resistance is not  
required but can be added for additional protection. A 1kresistor  
can be used.  
All unused LVCMOS output can be left floating. There should be no  
trace attached.  
CLK Inputs  
For applications not requiring the use of a clock input, it can be left  
floating. Though not required, but for additional protection, a 1k  
resistor can be tied from the CLK input to ground.  
Reliability Information  
Table 6. vs. Air Flow Table for a 32-Lead LQFP  
JA  
JA vs. Air Flow  
Linear Feet per Minute  
0
200  
500  
Single-Layer PCB, JEDEC Standard Test Boards  
Multi-Layer PCB, JEDEC Standard Test Boards  
67.8°C/W  
47.9°C/W  
55.9°C/W  
42.1°C/W  
50.1°C/W  
39.4°C/W  
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.  
Transistor Count  
The transistor count for ICS87946I-147 is: 1204  
Pin compatible to the MPC9446 and MPC946  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
10  
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Package Outline and Package Dimensions  
Package Outline - Y Suffix for 32-Lead LQFP  
Table 7. Package Dimensions for 32-Lead LQFP  
JEDEC Variation: BBC - HD  
All Dimensions in Millimeters  
Symbol  
Minimum  
Nominal  
Maximum  
N
32  
A
1.60  
0.15  
1.45  
0.45  
0.20  
A1  
0.05  
1.35  
0.30  
0.09  
0.10  
1.40  
0.37  
A2  
b
c
D & E  
D1 & E1  
D2 & E2  
e
9.00 Basic  
7.00 Basic  
5.60 Ref.  
0.80 Basic  
0.60  
L
0.45  
0°  
0.75  
7°  
ccc  
0.10  
Reference Document: JEDEC Publication 95, MS-026  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
11  
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Ordering Information  
Table 8. Ordering Information  
Part/Order Number  
87946AYI-147LF  
87946AYI-147LFT  
Marking  
ICS7946AI147L  
ICS7946AI147L  
Package  
“Lead-Free” 32-Lead LQFP  
“Lead-Free” 32-Lead LQFP  
Shipping Packaging  
Tray  
Temperature  
-40C to 85C  
-40C to 85C  
Tape & Reel  
Tape & Reel,  
Pin1 Orientation: EIA-481-D  
87946AYI-147LF/W  
ICS7946AI147L  
“Lead-Free” 32-Lead LQFP  
-40C to 85C  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
12  
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
Revision History Sheet  
Rev  
Table  
Page  
Description of Change  
Date  
1
2
8
Features section added Lead-Free bullet.  
Pin Description Table - corrected description for VDDA, VDDB and VDDC.  
Parameter Measurement Information Section - added part-to-part skew, bank  
skew, and multiple frequency skew diagrams.  
T2  
A
7/22/08  
10  
12  
Application Section - added Recommendations for Unused Input and Output Pins.  
Ordering Information Table - added lead-free marking.  
T8  
Updated format throughout the datasheet.  
T5A - T5B  
T8  
6 - 7  
12  
AC Tables - added thermal note.  
Ordering Information Table - corrected the Part/Order Numbers and corrected the  
non-LF marking.  
A
8/7/09  
Updated Header/Footer of the datasheet.  
A
A
T8  
T8  
12  
Removed leaded orderable parts from Ordering Information table  
11/15/12  
4/30/14  
12  
14  
Ordering Information Table - Added 87946AYI-147LF/W Ordering option.  
Updated Technical Support Contact Info to: clocks@idt.com  
ICS87946AYI-147 REVISION A APRIL 30, 2014  
13  
©2014 Integrated Device Technology, Inc.  
ICS87946I-147 Data Sheet  
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR  
We’ve Got Your Timing Solution  
6024 Silver Creek Valley Road Sales  
Technical Support  
800-345-7015 (inside USA)  
clocks@idt.com  
San Jose, California 95138  
+408-284-8200 (outside USA) +480-763-2056  
Fax: 408-284-2775  
www.IDT.com/go/contactIDT  
DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document,  
including descriptions of product features and performance, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state and are not  
guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the  
suitability of IDT’s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any  
license under intellectual property rights of IDT or any third parties.  
IDT’s products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to signifi-  
cantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.  
Integrated Device Technology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective third  
party owners.  
Copyright 2014. All rights reserved.  

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