SY58026UMG [MICREL]
ULTRA PRECISION DUAL 2:1 LVPECL MUX WITH INTERNAL TERMINATION; 超精密双2 ： 1 MUX LVPECL与内部端接
| 型号： | SY58026UMG |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | ULTRA PRECISION DUAL 2:1 LVPECL MUX WITH INTERNAL TERMINATION |
| 文件： | 总11页 (文件大小：645K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
®
ULTRA PRECISION DUAL 2:1 LVPECL Precision Edge
SY58026U
MUX WITH INTERNAL TERMINATION
FEATURES
■ Two independent differential 2:1 multiplexers
■ Guaranteed AC performance over temperature and
voltage:
®
Precision Edge
• DC-to >5Gbps data rate throughput
• <310ps IN-to-Out t
• <110ps t / t
DESCRIPTION
pd
r
f
The SY58026U features two ultra-fast, low jitter 2:1
differential muxes with a guaranteed maximum data
throughput of 5Gbps.
■ Unique, patent-pending input isolation design
minimizes crosstalk
■ Ultra-low jitter design:
• <1ps random jitter
• <10ps deterministic jitter
The SY58026U differential inputs include a unique
internal termination design that allows access to the
termination network through a VT pin. The device easily
interfaces to different logic standards, both AC- and DC-
coupled, without external resistor-bias and termination
networks. The result is a clean, stub-free, low jitter interface
solution. The differential 800mV LVPECL outputs have
extremely fast rise/fall times guaranteed to be less than
110ps.
RMS
PP
• <10ps total jitter (clock)
PP
• <0.7ps
crosstalk-induced jitter
RMS
■ Unique, patent-pending 50Ω input termination and
VT pin accepts DC-coupled and AC-coupled inputs
(CML, LVDS, PECL)
■ 800mV LVPECL output swing
The SY58026U operates from a 2.5V or 3.3V supply,
and is guaranteed over the full industrial temperature range
(–40°C to +85°C). The SY58026U is part of Micrel’s Precision
■ Power supply 2.5V ±5% or 3.3V ±10%
■ –40°C to +85°C temperature range
®
■ Available in 32-pin (5mm × 5mm) MLF package
®
Edge product family.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
APPLICATIONS
■ Data communication systems
■ SONET applications
■ Fibre Channel applications
■ GigE applications
FUNCTIONAL BLOCK DIAGRAM
INA0
INB0
50Ω
50Ω
VTA0
0
VTB0
0
50Ω
50Ω
/INA0
/INB0
QA
QB
VREF-ACA0
INA1
VREF-ACB0
INB1
MUX A
S
MUX B
S
/QA
/QB
50Ω
VTA1
50Ω
VTB1
1
1
50Ω
50Ω
/INA1
/INB1
VREF-ACA1
VREF-ACB1
SELA
(TTL/CMOS)
SELB
(TTL/CMOS)
AnyGate and Precision Edge are registered trademarks of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
Rev.: D
Amendment: /0
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
1
Issue Date: February 2007
Precision Edge®
SY58026U
Micrel, Inc.
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
Package
Type
Operating
Range
Package
Marking
Lead
Finish
Part Number
32 31 30 29 28 27 26 25
24
SY58026UMI
MLF-32
MLF-32
MLF-32
Industrial
Industrial
Industrial
SY58026U
SY58026U
Sn-Pb
Sn-Pb
1
GND
VCC
QA
/QA
VCC
NC
INB0
VTB0
VREF-ACB0
SY58026UMITR(2)
SY58026UMG
23
2
3
4
5
6
7
22
21
20
19
18
SY58026U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
/INB0
INB1
VTB1
SY58026UMGTR(2) MLF-32
Industrial
SY58026U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
VREF-ACB1
/INB1
SELA
VCC
8
17
9
10 11 12 13 14 15 16
Notes:
1. Contact factory for die availability. Dice are guaranteed at T = 25°C, DC electricals only.
A
2. Tape and Reel.
®
32-Pin MLF (MLF-32)
PIN DESCRIPTION
Pin Number
Pin Name
Pin Function
25, 28,
29, 32,
1, 4,
INA0, /INA0,
INA1, /INA1,
INB0, /INB0,
INB1, /INB1
Differential Inputs: These input pairs are the differential signal inputs to the device. Inputs
accept AC- or DC-coupled differential 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. Unused differential input pairs can be terminated by connecting one input
to VCC and the complementary input to GND through a 1kΩ resistor. The VT pin is to be
left open in this configuration. Please refer to the “Input Interface Applications” section for
more details.
5, 8
26, 30, 2, 6
18, 15
VTA0 , VTA1,
VTB0, VTB1
Input Termination Center-Tap: Each side of the differential input pair, terminates to a VT
pin. Each VT pin provides a center-tap to a termination network for maximum interface
flexibility. See “Input Interface Applications” section for more details.
SELA, SELB
Bank A, Bank B Input Channel Select (TTL/CMOS): These TTL/CMOS-compatible inputs
select the inputs to the multiplexers. These inputs are internally connected to a 25kΩ
pull-up resistor and will default to a logic HIGH state if left open. Input switching threshold
is VCC/2.
27, 31, 3, 7
VREF-ACA0,
VREF-ACA1,
VREF-ACB0,
VREF-ACB1
Reference Output Voltage: These outputs bias to VCC –1.2V. Connect to VT pin when
AC-coupling the data inputs. Bypass with 0.01µF low ESR capacitor to VCC.
Maximum current source or sink is 0.5mA. See “Input Interface Applications” section.
10, 13, 16,
17, 20, 23
VCC
Positive Power Supply: Bypass with 0.1µF0.01µF low ESR capacitors.
22, 21,
12, 11
QA, /QA,
QB, /QB
Differential 100k LVPECL Outputs: MUX A and MUX B selected LVPECL outputs.
See “Output Interface Applications” section for termination. Refer to the “Truth Table” for
logic operation.
9, 24
GND,
Exposed pad
Ground: Ground pins and exposed pad must be connected to the same ground plane.
14, 19
NC
Not connected.
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
2
Precision Edge®
SY58026U
Micrel, Inc.
Absolute Maximum Ratings(1)
Power Supply Voltage (V ) ...................... –0.5V to +4.0V
Operating Ratings(2)
Power Supply Voltage (V ) ............... +2.375V to +2.625V
CC
CC
............................................................ +3.0V to +3.6V
Input Voltage (V ) ......................................... –0.5V to V
IN
CC
LVPECL Output Current (I
)
Ambient Temperature Range (T ) ............. –40°C to +85°C
OUT
A
(4)
Continuous ............................................................. 50mA
Surge....................................................................100mA
(3)
Package Thermal Resistance
®
MLF (θ )
JA
Termination Current
Still-Air .............................................................35°C/W
®
Source or sink current on V ..................................... ±100mA
Input Current
MLF (ψ )
T
JB
Junction-to-board ............................................20°C/W
Source or sink current on IN, /IN ..........................±50mA
Current (V )
Source or sink current on V
REF-AC
(3)
.................. ±1.5mA
REF-AC
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
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
.
100
100
130
120
mA
RDIFF_IN
Differential Input Resistance
(IN-to-/IN)
80
40
Ω
RIN
Input Resistance
(IN-to-VT, /IN-to-VT)
50
60
Ω
VIH
Input High Voltage (IN, /IN)
Input Low Voltage (IN, /IN)
Input Voltage Swing (IN, /IN)
VCC –1.2
0
VCC
VIH –0.1
1700
V
V
VIL
VIN
See Figure 1a.
See Figure 1b.
100
mV
mV
VDIFF_IN
Differential Input Voltage Swing
|IN – /IN|
200
3400
VT_IN
In-to-VT (IN, /IN)
1.28
V
V
VREF-AC
Output Reference Voltage
VCC–1.3 VCC–1.2 VCC–1.1
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 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.
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
3
Precision Edge®
SY58026U
Micrel, Inc.
(6)
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
VCC–1.145
VCC–0.895
V
VOL
Output Low Voltage
Q, /Q
VCC–1.945
550
VCC–1.695
V
VOUT
Output Voltage Swing
Q, /Q
See Figure 1a.
See Figure 1b.
800
mV
mV
VDIFF-OUT
Differential Output Voltage Swing
Q, /Q
1100
1600
(6)
LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS
VCC = 2.5V ±5% or 3.3V ±10%; TA= –40°C to 85°C unless otherwise stated.
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
75
V
IIH
–175
–300
µA
µA
IIL
VIL = 0V
Note:
6. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
4
Precision Edge®
SY58026U
Micrel, Inc.
(7)
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
Typ
Max
Units
fMAX
Maximum Operating Frequency
NRZ Data
Clock
5
Gbps
GHz
VOUT ≥ 400mV
6
230
220
7
tpd
Propagation Delay
IN-to-Q VIN ≥ 300mV
160
100
310
400
15
20
100
1
ps
ps
SEL-to-Q
tSKEW
Input-to-Input Skew (Within-bank)
Bank-to-Bank Skew
Note 8
Note 9
Note 10
ps
8
ps
Part-to-Part Skew
ps
tJITTER
Data
Random Jitter (RJ) Note 11
Deterministic Jitter (DJ) Note 12
Cycle-to-Cycle Jitter (RJ) Note 13
Total Jitter (TJ) Note 14
psRMS
psPP
psRMS
psPP
10
1
Clock
10
Crosstalk-induced Jitter
Channel-to-Channel (Within-bank) Note 15, Within-bank.
0.7
psRMS
ps
tr, tf
Output Rise/Fall Time 20% to 80% At full swing.
35
70
110
Notes:
7. High-speed AC parameters are guaranteed by design and characterization. V swing ≥ 100mV unless otherwise noted.
IN
8. Input-to-input skew is the difference in time between two inputs to the output within a bank.
9. Bank-to-bank skew is the difference in time from input to the output between bank.
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. Random jitter is measured with a K28.7 comma detect character pattern, measured at 5Gbps and 2.5Gbps/3.2Gbps.
23
12. Deterministic jitter 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
signal.
where T is the time between rising edges of the output
n–1
n
12
14. Total jitter definition: with an ideal clock input of frequency ≤ f
specified peak-to-peak jitter value.
, no more than one output edge in 10 output edges will deviate by more than the
MAX
15. Crosstalk is measured at the output while applying two similar frequencies that are asynchronous with respect to each other at the inputs.
TRUTH TABLES
INA0
/INA0
INA1
/INA1
SELA
QA
0
/QA
1
0
1
1
0
X
X
0
1
X
X
1
0
0
0
1
1
1
0
X
X
X
X
0
1
1
0
INB0
/INB0
INB1
/INB1
SELB
QB
0
/QB
1
0
1
1
0
X
X
0
1
X
X
1
0
0
0
1
1
1
0
X
X
X
X
0
1
1
0
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
5
Precision Edge®
SY58026U
Micrel, Inc.
SINGLE-ENDED AND DIFFERENTIAL SWINGS
VDIFF_IN,
VDIFF_OUT
VIN,
VOUT
1600mV (Typ.)
800mV (Typ.)
Figure 1a. Single-Ended Voltage Swing
Figure 1b. Differential Voltage Swing
TIMING DIAGRAM
INA0, INA1
/INA0, /INA1
tpd
QA
/QA
INB0, INB1
/INB0, /INB1
tpd
QB
/QB
SELA
SELA-to-QA
tpd
tpd
QA
/QA
SELB
SELB-to-QB
tpd
tpd
QB
/QB
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
6
Precision Edge®
SY58026U
Micrel, Inc.
TYPICAL OPERATING CHARACTERISTICS
= 3.3V, T = 25°C, RL = 50Ω to VCC – 2V, DC coupled, unless otherwise stated.
V
CC
A
200MHz Output
1.25GHz Output
TA = 25°C
VCC = 3.3V
TA = 25°C
VCC = 3.3V
/Q
/Q
Q
Q
TIME (100ps/div.)
TIME (600ps/div.)
2.5Gbps Output
3.2Gbps Output
TA = 25°C
VCC = 3.3V
TA = 25°C VCC = 3.3V
TIME (100ps/div.)
TIME (100ps/div.)
4GHz Output
5GHz Output
TA = 25°C
VCC = 3.3V
TA = 25°C
VCC = 3.3V
/Q
Q
/Q
Q
TIME (25ps/div.)
TIME (30ps/div.)
5Gbps Output
/Q
TA = 25°C
VCC = 3.3V
Q
TIME (50ps/div.)
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
7
Precision Edge®
SY58026U
Micrel, Inc.
TYPICAL OPERATING CHARACTERISTICS
= 3.3V, T = 25°C, RL = 50Ω to VCC – 2V, DC coupled, unless otherwise stated.
V
CC
A
Frequency
vs. Output Swing
Propagation Delay
vs. Temperature
900
800
700
600
500
400
300
200
100
0
300
290
280
270
CML
260
LVDS
250
240
PECL
230
220
210
200
SEL
0
2000 4000 6000 8000 10000
FREQUENCY (MHz)
-50 -25
0
25 50 75 100
TEMPERATURE (°C)
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
8
Precision Edge®
SY58026U
Micrel, Inc.
INPUT AND OUTPUT STAGE INTERNAL TERMINATION
VCC
VCC
IN
VT
50Ω
50Ω
/Q
Q
GND
/IN
Figure 2a. Simplified Differential Input Stage
Figure 2b. Simplified LVPECL Output Stage
INPUT INTERFACE APPLICATIONS
VCC
VCC
IN
VCC
IN
LVPECL
LVPECL
/IN
/IN
VCC
IN
SY58026U
LVDS
Rp
Rp
SY58026U
0.01µF
GND
/IN
GND
VT
VCC
VT
SY58026U
Rb
NC
VREF-AC
GND
VREF-AC
GND
0.01µF
NC
NC
VT
GND For VCC = 3.3V, Rb = 50Ω.
For VCC = 2.5V, Rb = 19Ω.
For VCC = 3.3V, Rp = 100Ω.
For VCC = 2.5V, Rp = 50Ω.
VREF-AC
Figure 3b. AC-Coupled
PECL Interface
Figure 3a. DC-Coupled
PECL Interface
Figure 3c. LVDS
Interface
VCC
VCC
IN
CML
IN
/IN
CML
SY58026U
/IN
GND
SY58026U
NC
NC
VT
GND
VCC
VREF-AC
VT
VREF-AC
0.01µF
Option: May connecct VT to VCC
.
Figure 3e. AC-Coupled
CML Interface
Figure 3d. DC-Coupled
CML Interface
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
9
Precision Edge®
SY58026U
Micrel, Inc.
OUTPUT INTERFACE APPLICATIONS
+3.3V
R1
130Ω
R1
130Ω
+3.3V
+3.3V
+3.3V
+3.3V
ZO = 50Ω
ZO = 50Ω
ZO = 50Ω
ZO = 50Ω
50Ω
50Ω
R2
82Ω
R2
82Ω
C (Optional)
0.01µF
50Ω
Figure 4a. Parallel Thevenin-Equivalent
Termination
Figure 4b. Parallel Termination
(3-Resistor)
+3.3V
R1
+3.3V
130Ω
Terminate
unused output
to VCC –2V.
R2
82Ω
Figure 4c. Terminating Unused Outputs
RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION
Part Number
Function
Data Sheet Link
SY58016L
3.3V 10Gbps Differential CML Line Driver/Receiver
with Internal Termination
http://www.micrel.com/product-info/products/sy58016l.shtml
SY58017U
10.7Gbps Differential CML 2:1 MUX with
Internal Termination
http://www.micrel.com/product-info/products/sy58017u.shtml
SY58018U
SY58019U
5Gbps LVPECL 2:1 MUX with Internal Termination
http://www.micrel.com/product-info/products/sy58018u.shtml
http://www.micrel.com/product-info/products/sy58019u.shtml
10.7Gbps 400mV LVPECL 2:1 MUX with
Internal Termination
SY58025U
SY58027U
SY58051U
SY58052U
10.7Gbps Dual 2:1 CML MUX with
Internal Termination
http://www.micrel.com/product-info/products/sy58025u.shtml
http://www.micrel.com/product-info/products/sy58027u.shtml
http://www.micrel.com/product-info/products/sy58051u.shtml
10.7Gbps Dual 2:1 400mV LVPECL MUX with
Internal Termination
10.7Gbps AnyGate® with Internal Input and Output
Termination
10Gbps Clock/Data Retimer with 50Ω Input Termination http://www.micrel.com/product-info/products/sy58052u.shtml
MLF™ Application Note
www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf
www.micrel.com/product-info/products/solutions.shtml
HBW Solutions New Products and Applications
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
10
Precision Edge®
SY58026U
Micrel, Inc.
®
32-PIN MicroLeadFrame (MLF-32)
Package
EP- Exposed Pad
Die
CompSide Island
Heat Dissipation
Heat Dissipation
VEE
Heavy Copper Plane
Heavy Copper Plane
®
VEE
PCB Thermal Consideration for 32-Pin MLF Package
(Always solder, or equivalent, the exposed pad to the PCB)
Package Notes:
1. Package meets Level 2 Moisture Sensitivity Classification.
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.
© 2006 Micrel, Incorporated.
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
11
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