Microchip SY89542U Bedienungsanleitung


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1
Precision Edge
®
SY89542U
Micrel, Inc.
M9999-082407
[email protected] or (408) 955-1690
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
■Dual 2:1 multiplexer
■Guaranteed AC performance over temp and voltage:
•DC-to > 3.2Gbps data rate throughput
•< 600ps In-to-Out t
pd
•< 150ps t
r
/t
f
■Ultra-low jitter design:
•< 1ps
RMS
random jitter
•< 10ps
PP
deterministic jitter
•< 10ps
PP
total jitter (clock)
•< 0.7ps
RMS
crosstalk-induced jitter
■Unique input isolation design minimizes crosstalk
■Internal input termination
■Unique input termination and V
T
pin accepts
DC-Coupled and AC-coupled inputs (LVDS, LVPECL,
CML)
■350mV LVDS output swing
■CMOS/TTL compatible MUX select
■Power supply 2.5V ±5%
■–40°C to +85°C temperature range
■Available in 32-pin (5mm x 5mm) MLF
®
package
FEATURES
2.5V, 3.2Gbps DUAL, DIFFERENTIAL
2:1 LVDS MULTIPLEXER WITH
INTERNAL TERMINATION
Precision Edge
®
SY89542U
APPLICATIONS
■Redundant clock/data switchover
■SONET/SDH multi-channel select applications
■Fibre Channel applications
■GigE applications
Rev.: DAmendment: /0
Issue Date:August 2007
The SY89542U includes two precision, high-speed 2:1
differential Muxes with LVDS (350mV) compatible outputs
with a guaranteed data rate throughput of 3.2Gbps over
temperature and voltage.
The SY89542U differential inputs include a unique, 3-pin
internal termination that allows access to the termination
network through a V
T
pin. This feature allows the device to
easily interface 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 SY89542U operates from a single 2.5V supply, and
is guaranteed over the full industrial temperature range
(–40°C to +85°C). For applications that require a 3.3V supply,
consider the SY89543L. The SY89542U is part of Micrel’s
Precision Edge
®
product family.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Precision Edge
®
LVDS
QA
/QA
INA0
/INA0
V
TA0
50Ω
50Ω
0
MUX A
2:1 MUX
1
INA1
/INA1
V
TA1
50Ω
50Ω
S
SELA (CMOS/TTL)
LVDS
QB
/QB
INB0
/INB0
V
TB0
50Ω
50Ω
0
MUX B
2:1 MUX
1
INB1
/INB1
V
TB1
50Ω
50Ω
S
SELB (CMOS/TTL)
Precision Edge is a registered trademark of Micrel, Inc.
Micro
LeadFrame and MLF are registered trademarks of Amkor Technology, Inc.

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Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: SY89542U

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