SY58026U [MICREL]
ULTRA-PRECISION DIFFERENTIAL 400mV LVPECL 2:1 MUX with INTERNAL TERMINATION; 超精密差分400mV的LVPECL 2 ： 1多路复用器与内部端接
| 型号： | SY58026U |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | ULTRA-PRECISION DIFFERENTIAL 400mV LVPECL 2:1 MUX with INTERNAL TERMINATION |
| 文件： | 总12页 (文件大小：325K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
ULTRA-PRECISION
DIFFERENTIAL 400mV LVPECL 2:1
MUX with INTERNAL TERMINATION
®
Precision Edge
SY58019U
FEATURES
■ Guaranteed AC performance over temperature and
voltage:
®
Precision Edge
• DC to 10.7Gbps data throughput
• DC to > 7GHz f
(clock)
MAX
DESCRIPTION
• < 240ps propagation delay
• < 70ps t / t times
r
f
The SY58019U is a 2.5V/3.3V precision, high-speed, 2:1
differential MUX capable of handling clocks up to 7GHz
and data up to 10.7Gbps.
■ Ultra-low crosstalk-induced jitter: 0.7ps
■ Ultra-low jitter design:
RMS
• < 1ps
random jitter
RMS
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows customers to interface
to any differential signal (AC- or DC-coupled) as small as
100mV without any level shifting or termination resistor
networks in the signal path. The outputs are 400mV, 100k
compatible, LVPECL, with extremely fast rise/fall times
guaranteed to be less than 70ps.
• < 10ps deterministic jitter
PP
• < 10ps total jitter (clock)
PP
■ Unique input termination and V pin accepts DC-
T
coupled and AC-coupled inputs (CML, PECL, LVDS)
■ 400mV (100k) LVPECL output swing
■ Power supply 2.5V ±5% or 3.3V ±10%
The SY58019U operates from a 2.5V ±5% supply or a
3.3V ±10% supply and is guaranteed over the full industrial
temperature range of –40°C to +85°C. For applications that
require CML outputs, consider the SY58017U or for 800mV
LVPECL outputs the SY58018U. The SY58019U is part of
■ –40°C to +85°C temperature range
■ Available in 16-pin (3mm × 3mm) MLF™ package
®
APPLICATIONS
Micrel’s high-speed, Precision Edge product line.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
■ Redundant clock distribution
■ OC-3 to OC-192 SONET/SDH clock/data distribution
■ Loopback
■ Fibre Channel distribution
FUNCTIONAL BLOCK DIAGRAM
TYPICAL PERFORMANCE
IN0
50Ω
VT0
/IN0
IN1
0
1
50Ω
Q0
MUX
S
/Q0
50Ω
VT1
50Ω
/IN1
SEL
(TTL/CMOS)
Precision Edge is a registered trademark of Micrel, Inc.
AnyGate is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
Rev.: B
Amendment: /0
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
1
Issue Date: May 2005
Precision Edge®
SY58019U
Micrel, Inc.
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
Package Operating
Package
Marking
Lead
Finish
16 15 14 13
Part Number
Type
Range
1
2
12
11
10
9
Q
IN0
SY58019UMI
MLF-16
MLF-16
MLF-16
Industrial
Industrial
Industrial
019U
019U
Sn-Pb
Sn-Pb
/IN0
GND
GND
/Q
SY58019UMITR(2)
SY58019UMG(3)
3
4
IN1
019U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
/IN1
5
6
7
8
SY58019UMGTR(2, 3) MLF-16
Industrial
019U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
Notes:
1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only.
2. Tape and Reel.
16-Pin MLF™
3. Pb-Free package recommended for new designs.
PIN DESCRIPTION
Pin Number
Pin Name
IN0, /IN0
Pin Function
1, 2
3, 4
Differential Input: These input pairs are the differential signal inputs to the device. They
accept differential AC- or DC-coupled signals as small as 100mV. Each pin of a pair internally
terminates to a VT pin through 50Ω. Note that these inputs will default to an indeterminate
state if left open. Please refer to the “Input Interface Applications” section for more details.
IN1, /IN1
VT0, VT1
SEL
16, 5
6
Input Termination Center-Tap: Each side of the differential input pair terminates to a VT
pin. The VT0 and VT1 pins provide a center-tap to a termination network for maximum
interface flexibility. See “Input Interface Applications” section for more details.
This single-ended TTL/CMOS compatible input selects the inputs to the multiplexer. Note
that this input is internally connected to a 25kΩ pull-up resistor and will default to a logic
HIGH state if left open.
7
NC
No connect.
8, 13
VCC
Positive Power Supply: Bypass with 0.1µF 0.01µF low ESR capacitors. 0.01µF capacitor
should be as close to VCC pin as possible.
12, 9
Q, /Q
Differential Outputs: This 100k compatible LVPECL output pair is the output of the device.
Terminate through 50Ω to VCC – 2V. See “Output Interface Applications” section. It is a
logic function of the IN0, IN1, and SEL inputs. Please refer to the “Truth Table” for details.
10, 11, 14, 15
GND,
Ground. Ground pins and exposed pad must be connected to the same ground plane.
Exposed Pad
TRUTH TABLE
SEL
Output
0
1
CH0 Input Selected
CH1 Input Selected
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
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Precision Edge®
SY58019U
Micrel, Inc.
Absolute Maximum Ratings(1)
Operating Ratings(2)
Power Supply Voltage (V ) ...................... –0.5V to +4.0V
Power Supply Voltage (V ) ............... +2.375V to +2.625V
CC
CC
Input Voltage (V ) ......................................... –0.5V to V
............................................................ +3.0V to +3.6V
IN
CC
LVPECL Output Current (I
)
Ambient Temperature Range (T ) ............. –40°C to +85°C
OUT
A
(4)
Continuous .............................................................50mA
Surge....................................................................100mA
Package Thermal Resistance
MLF™ (θ
)
JA
(3)
Termination Current
Still-Air .............................................................60°C/W
MLF™ (ψ
)
Source or Sink Current on V pin....................... ±100mA
JB
T
Junction-to-Board ............................................38°C/W
Input Current
Source or Sink Current on IN, /IN pin...................±50mA
Lead Temperature (soldering, 20 sec.) ..................... 260°C
Storage Temperature Range (T ) ........... –65°C to +150°C
S
(5)
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
VCC
Power Supply Voltage
VCC = 2.5V
VCC = 3.3V
2.375
3.0
2.5
3.3
2.625
3.6
V
V
ICC
Power Supply Current
No load, max. VCC
55
70
mA
RDIFF_IN
Differential Input Resistance
(IN0-to-/IN0, IN1-to-/IN1)
80
40
100
120
Ω
RIN
Input Resistance
50
60
Ω
(IN0-to-VT0, /IN0-to-VT0
,
IN1-to-VT1, /IN1-to-VT1
)
VIH
Input HIGH Voltage
(IN0, /IN0, IN1, /IN1)
Note 6
V
– 1.6
VCC
V
V
CC
VIL
Input LOW Voltage
(IN0, /IN0, IN1, /IN1)
0
V
– 0.1
IH
VIN
Input Voltage Swing
(IN0, /IN0, IN1, /IN1)
See Figure 1a
See Figure 1b
100
200
1700
mV
mV
V
VDIFF_IN
VT IN
Differential Input Voltage Swing
|IN0, /IN0|, |IN1, /IN1|
IN to VT
1.28
(IN0, /IN0, IN1, /IN1)
Notes:
1. Permanent device damage may occur if “Absolute Maximum Ratings” are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to “Absolute Maximum Ratings” conditions for
extended periods may affect device reliability.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. Due to the limited drive capability, use for input of the same package only.
4. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device’s most negative potential (GND) on the PCB. ψ uses
JB
4-layer θ in still-air measurement, unless otherwise stated.
JA
5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
6.
V
(min) not lower than 1.2V.
IH
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
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Precision Edge®
SY58019U
Micrel, Inc.
(7)
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS
VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to +85°C; RL = 50Ω to VCC–2V, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
VOH
Output HIGH Voltage
Q, /Q
V
V
– 1.145
V
– 0.895
CC
V
CC
VOL
Output LOW Voltage
Q, /Q
– 1.545
V – 1.295
CC
V
CC
VOUT
Output Differential Swing
Q, /Q
See Figure 1a
See Figure 1b
150
300
400
800
mV
mV
VDIFF_OUT
Differential Output Voltage Swing
Q, /Q
(7)
LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS
VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to +85°C
Symbol
VIH
Parameter
Condition
Min
Typ
Max
Units
V
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
2.0
VIL
0.8
40
V
IIH
µA
µA
IIL
–300
Note:
7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
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Precision Edge®
SY58019U
Micrel, Inc.
(8)
AC ELECTRICAL CHARACTERISTICS
VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to +85°C, RL = 50Ω to VCC–2V, unless otherwise stated.
Symbol
Parameter
Condition
Min
NRZ Data 10.7
Clock
Typ
Max
Units
Gbps
GHz
ps
fMAX
Maximum Operating Frequency
VOUT ≥ 200mV
7
tpd
Differential Propagation Delay
IN-to-Q
90
50
160
160
75
240
350
SEL-to-Q
ps
t
pd Tempco
Differential Propagation Delay
Temperature Coefficient
fs/°C
tSKEW
Input-to-Input Skew Note 9
Part-to-Part Skew Note 10
Random Jitter Note 11
3
15
100
1
ps
ps
tJITTER
Data
psRMS
psPP
psRMS
psPP
Deterministic Jitter Note 12
Cycle-to-Cycle Jitter Note 13
Total Jitter Note 14
10
1
Clock
10
Crosstalk-Induced Jitter
Note 15
0.7
70
psRMS
ps
tr, tf
Output Rise/Fall Time
20% to 80%, at full swing
20
40
Notes:
8. High frequency AC parameters are guaranteed by design and characterization.
9. Input-to-input skew is the difference in time from an input-to-output in comparison to any other input-to-output. In addition, the input-to-input skew
does not include the output skew.
10. Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at the
respective inputs.
11. RJ is measured with a K28.7 comma detect character pattern, measured at 2.5Gbps/3.2Gbps.
23
12. DJ is measured at 2.5Gbps/3.2Gbps, with both K28.5 and 2 –1 PRBS pattern.
13. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, T –T
where T is the time between rising edges of the output
n–1
n
signal.
12
14. Total jitter definition: with an ideal clock input of frequency ≤ f
, no more than one output edge in 10 output edges will deviate by more than the
MAX
specified peak-to-peak jitter value.
15. Crosstalk is measured at the output while applying two similar frequencies that are asynchronous with respect to each other at the inputs.
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
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Precision Edge®
SY58019U
Micrel, Inc.
SINGLE-ENDED AND DIFFERENTIAL SWINGS
VDIFF_IN
,
VIN,
VOUT
VDIFF_OUT 800mV (Typ.)
400mV (Typ.)
Figure 1a. Single-Ended Voltage Swing
Figure 1b. Differential Voltage Swing
TIMING DIAGRAMS
IN0
/IN0
tpd
Q
/Q
SEL
tpd
tpd
Q
/Q
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Precision Edge®
SY58019U
Micrel, Inc.
TYPICAL OPERATING CHARACTERISTICS
V
= 3.3V, V = 100mV, T = 25°C, unless otherwise stated.
IN A
CC
Propagation Delay
vs. Input Voltage Swing
Propagation Delay
vs. Temperature
166
165
164
163
162
161
160
167
166
165
164
163
162
161
160
100 200 300 400 500 600 700 800
INPUT VOLTAGE SWING (mV)
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
Output Amplitude
vs. Frequency
450
400
350
300
250
200
150
100
50
0
0
1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
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Precision Edge®
SY58019U
Micrel, Inc.
TYPICAL OPERATING CHARACTERISTICS
V
= 3.3V, V = 100mV, T = 25°C, unless otherwise stated.
IN A
CC
200MHz Output
2GHz Output
TIME (500ps/div.)
TIME (100ps/div.)
7GHz Output
TIME (20ps/div.)
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Precision Edge®
SY58019U
Micrel, Inc.
10.7Gbps Output
10.7Gbps Mask
TIME (20ps/div.)
TIME (20ps/div.)
(223–1PRBS)
(223–1PRBS)
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Precision Edge®
SY58019U
Micrel, Inc.
INPUT AND OUTPUT STAGES
VCC
VCC
IN
50Ω
VT
GND
50Ω
/Q
Q
/IN
Figure 2a. Simplified Differential Input Stage
Figure 2b. Simplified LVPECL Output Stage
INPUT INTERFACE APPLICATIONS
VCC
VCC
VCC
IN
LVPECL
IN
/IN
IN
PECL
GND
VCC
SY58019U
CML
/IN
/IN
0.01µF
GND
Rpd
Rpd
SY58019U
SY58019U
VT
GND
Rpd
VCC —1.4V
GND
VT
NC
VT
For VCC = 3.3V, Rpd = 50Ω
For VCC = 2.5V, Rpd = 19Ω
For 3.3V, Rpd = 100Ω
For 2.5V, Rpd = 50Ω
(Option: May connect VT to VCC
)
Figure 3a. LVPECL
Interface (DC-Coupled)
Figure 3b. LVPECL
Interface (AC-Coupled)
Figure 3c. CML
Interface (DC-Coupled)
VCC
VCC
IN
IN
CML
LVDS
/IN
/IN
SY58019U
SY58019U
GND
GND
VCC —1.4V
VT
NC
VT
Figure 3d. CML
Figure 3e. LVDS Interface
Interface (AC-Coupled)
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Precision Edge®
SY58019U
Micrel, Inc.
OUTPUT INTERFACE APPLICATIONS
+3.3V
+3.3V
+3.3V
Z = 50Ω
Z = 50Ω
R1
130Ω
R1
130Ω
+3.3V
+3.3V
ZO = 50Ω
ZO = 50Ω
50Ω
50Ω
“Source”
“Destination”
R2
82Ω
R2
82Ω
VCC
0.01µF
(optional)
For 3.3V, Rb = 50Ω
For 2.5V, Rb = 19Ω
R
For 3.3V, R1 = 250Ω, R2 = 62.5Ω
For 2.5V, R1 = 130Ω, R2 = 82Ω
b
Figure 4b. Three-Resistor “Y” Termination
Figure 4a. Parallel Thevenin-Equivalent
Termination
+3.3V
R1
130Ω
+3.3V
ZO = 50Ω
R2
82Ω
Figure 4c. Terminating Unused I/O
RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION
Part Number
Function
Data Sheet Link
SY58016L
3.3V 10Gbps Differential CML Line Driver/Receiver
with Internal I/O Termination
http://www.micrel.com/product-info/products/sy58016l.shtml
SY58017U
SY58018U
SY58025U
Ultra Precision Differential CML 2:1 Mux with
Internal I/O Termination
http://www.micrel.com/product-info/products/sy58017u.shtml
http://www.micrel.com/product-info/products/sy58018u.shtml
http://www.micrel.com/product-info/products/sy58025u.shtml
Ultra Precision Differential LVPECL 2:1 Mux with
Internal Termination
10.7Gbps Dual 2:1 CML Mux with
Internal I/O Termination
SY58026U
SY58027U
5Gbps Dual 2:1 Mux with Internal Termination
http://www.micrel.com/product-info/products/sy58026u.shtml
http://www.micrel.com/product-info/products/sy58027u.shtml
10.7Gbps Dual 2:1 400mV LVPECL Mux with
Internal Termination
SY58051U
SY58052U
10.7Gbps AnyGate® with Internal Input and Output
Termination
http://www.micrel.com/product-info/products/sy58051u.shtml
10Gbps Clock/Data Retimer with 50Ω Input Termination
MLF™ Application Note
http://www.micrel.com/product-info/products/sy58052u.shtml
www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf
www.micrel.com/product-info/products/solutions.shtml
HBW Solutions New Products and Applications
M9999-051105
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11
Precision Edge®
SY58019U
Micrel, Inc.
16 LEAD MicroLeadFrame™ (MLF-16)
Package
EP- Exposed Pad
Die
CompSide Island
Heat Dissipation
Heat Dissipation
VEE
Heavy Copper Plane
Heavy Copper Plane
VEE
PCB Thermal Consideration for 16-Pin MLF™ Package
(Always solder, or equivalent, the exposed pad to the PCB)
Package Notes:
1. Package meets Level 2 qualification.
2. All parts are dry-packaged before shipment.
3. Exposed pads must be soldered to a ground for proper thermal management.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2005 Micrel, Incorporated.
M9999-051105
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