SY58025U_07 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – ULTRA PRECISION DUAL 2:1 CML MUX WITH INTERNAL I/O TERMINATION

Micrel, Inc.
Precision Edge^®
ULTRA PRECISION DUAL 2:1 CML
Precision E^Sd^Y5g⁸e^0®25U
MUX WITH INTERNAL I/O TERMINATION
SY58025U
FEATURES
s Two independent differential 2:1 multiplexers
s Guaranteed AC performance over temperature and
voltage:
• DC-to >10.7Gbps data rate throughput
• <290ps IN-to-Out t_pd
• <70ps t_r / t_f times
s Unique, patent-pending input isolation design
minimizes crosstalk
s Ultra-low jitter design:
• <1ps_RMS random jitter
• <10ps_PP deterministic jitter
• <10ps_PP total jitter (clock)
• <0.7ps_RMS crosstalk-induced jitter
s Unique, patent-pending 50Ω input termination and
VT pin accepts DC-coupled and AC-coupled inputs
(CML, LVDS, PECL)
s Typical 400mV CML output swing (R_L = 50Ω)
s Internal 50Ω input termination
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
s Data communication systems
s All SONET OC3-OC-768 applications
s All Fibre Channel applications
s All GigE applications
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
Precision Edge^®
The SY58025U features two ultra-fast, low jitter 2:1
differential muxes with a guaranteed maximum data or clock
throughput of 10.7Gbps or 7GHz, respectively.
The SY58025U 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 CML output is optimized for 50Ω
environments with internal 50Ω source termination and a
400mV output swing.
The SY58025U operates from a 2.5V or 3.3V supply and
is guaranteed over the full industrial temperature range
(–40°C to +85°C). The SY58025U is part of Micrel’s Precision
Edge^® product family.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
INA0
50Ω
V_TA0
50Ω
/INA0
V_REF-ACA0
INA1
50Ω
V_TA1
50Ω
/INA1
V_REF-ACA1
SELA
(TTL/CMOS)
0
MUX A
1S
QA
/QA
INB0
50Ω
V_TB0
50Ω
/INB0
V_REF-ACB0
INB1
50Ω
V_TB1
50Ω
/INB1
V_REF-ACB1
SELB
(TTL/CMOS)
AnyGate and Precision Edge are registered trademarks of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-020207
[e-mail] or [phone]
1
0
QB
MUX B
/QB
1S
Rev.: C Amendment: /0
Issue Date: February 2007