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PDF SY58029U Data sheet ( Hoja de datos )
| Número de pieza | SY58029U | |
| Descripción | ULTRA PRECISION DIFFERENTIAL LVPECL 4:1 MUX | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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www.DataSheet4U.com
Micrel, Inc.
ULTRA PRECISION DIFFERENTIAL
LVPECL 4:1 MUX with 1:2 FANOUT
and INTERNAL TERMINATION
Precision Edge®
Precision ESdY5g8e0®29U
SY58029U
FEATURES
s Selects 1 of 4 differential inputs
s Provides two copies of the selected input
s Guaranteed AC performance over temperature and
voltage:
• DC-to-> 5Gbps data rate throughput
• < 390ps IN-to-Out tpd
• < 110ps tr / tf times
s Ultra low-jitter design:
• < 10psPP total jitter (clock)
• < 1psRMS random jitter
• < 10psPP deterministic jitter
• < 0.7psRMS crosstalk-induced jitter
s Unique patended input design minimizes crosstalk
s Accepts an input signal as low as 100mV
s Unique patented input termination and VT pin
accepts DC- and AC-coupled inputs (CML, LVPECL,
LVDS)
s 800mV 100K LVPECL output swing
s Power supply 2.5V ±5% or 3.3V ±10%
s –40°C to +85°C temperature range
s Available in 32-pin (5mm × 5mm) MLF™ package
APPLICATIONS
Precision Edge®
DESCRIPTION
The SY58029U is a 2.5V/3.3V precision, high-speed, 4:1
differential multiplexer with 100k LVPECL (800mV)
compatible outputs, capable of handling clocks up to 4GHz
and data streams up to 5Gbps. In addition, a 1:2 fanout
buffer provides two copies of the selected inputs.
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 result is a clean, stub-free,
low-jitter interface solution. The outputs are 800mV LVPECL,
(100k temperature compensated) with extremely fast rise/
fall times guaranteed to be less than 110ps.
The SY58029U 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 SY58028U. For 400mV
LVPECL outputs, consider the SY58030U. The SY58029U
is part of Micrel’s high-speed, Precision Edge® product line.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
s Redundant clock and/or distribution
s All SONET/SDH clock/data distribution
s Loopback
s All Fibre Channel distribution
s All Gigabit Ethernet clock and/or data distribution
TYPICAL PERFORMANCE
2.5Gbps Output (2 23Ð1 PRBS)
TIME (100ps/div.)
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
M9999-051105
[email protected] or (408) 955-1690
FUNCTIONAL BLOCK DIAGRAM
IN0
50Ω
VT0
50Ω
/IN0
VREF-AC0
IN1
50Ω
VT1
50Ω
/IN1
VREF-AC1
IN2
50Ω
VT2
50Ω
/IN2
VREF-AC2
IN3
50Ω
VT3
50Ω
/IN3
VREF-AC3
SEL0 (CMOS/TTL)
SEL1 (CMOS/TTL)
4:1
MUX
0
1
MUX
2
3
1:2
Fanout
Q0
/Q0
Q1
/Q1
Rev.: B Amendment: /0
1 Issue Date: May 2005
1 page  
Micrel, Inc.
Precision Edge®
SY58029U
AC ELECTRICAL CHARACTERISTICS(8)
VCC = 2.5V ±5% or 3.3V ±10%; RL = 50Ω to VCC–2V; TA= –40°C to +85°C, VIN ≥ 100mV, unless otherwise stated.
Symbol
Parameter
Condition
Min Typ
Max Units
fMAX
tpd
Maximum Operating Frequency
Propagation Delay (Diff) (IN-to-Q)
(SEL-to-Q)
VOUT ≥ 400mV
VIN ≥ 100mV
NRZ Data 5
Gbps
Clock
4
GHz
215 390 ps
100 500 ps
tpd Tempco
Differential Propagation Delay
Temperature Coefficient
115 fs/°C
tSKEW
Output-to-Output Note 9
Part-to-Part Note 10
7 15 ps
100 ps
tJITTER
Data
Random Jitter Note 11
Deterministic Jitter Note 12
Clock
Cycle-to-Cycle Jitter Note 13
Total Jitter Note 14
Crosstalk Induced Jitter
(Adjacent Channel)
Note 15
2.5Gbps to 3.2Gbps
2.5Gbps to 3.2Gbps
1 psRMS
10 psPP
1 psRMS
10 psPP
0.7 psRMS
tr, tf Output Rise/Fall Time
20% to 80%, VIN = 800mV, full output swing 35
60 110 ps
Notes:
8. High frequency AC electricals are guaranteed by design and characterization.
9. Output-to-output skew is measured between outputs under identical input conditions.
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 2.5Gbps to 3.2Gbps.
12. Deterministic jitter is measured at 2.5Gbps to 3.2Gbps, with both K28.5 and 223–1 PRBS pattern.
13. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, Tn–Tn–1 where T is the time between rising edges of the output
signal.
14. Total jitter definition: with an ideal clock input of frequency ≤ fMAX, no more than one output edge in 1012 output edges will deviate by more than the
specified peak-to-peak jitter value.
15. Crosstalk is measured at the output while applying two similar clock frequencies that are asynchronous with respect to each other at the inputs.
SINGLE-ENDED AND DIFFERENTIAL SWINGS
VIN,
VOUT
800mV (Typ.)
Figure 1a. Single-Ended Voltage Swing
M9999-051105
[email protected] or (408) 955-1690
5
VDIFF_IN,
VDIFF_OUT 1.6V (Typ.)
Figure 1b. Differential Voltage Swing
5 Page 
Micrel, Inc.
32 LEAD MicroLeadFrame™ (MLF-32)
Precision Edge®
SY58029U
Package
EP- Exposed Pad
Die
CompSide Island
Heat Dissipation
Heat Dissipation
Heavy Copper Plane
Heavy Copper Plane
VEE
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 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
[email protected] or (408) 955-1690
11
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| PDF Descargar | [ Datasheet SY58029U.PDF ] | |
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