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SY89547L Datasheet, PDF (1/11 Pages) Micrel Semiconductor – 3.3V, 3.2Gbps DIFFERENTIAL 4:1 LVDS MULTIPLEXER with 1:2 FANOUT and INTERNAL TERMINATION | |||
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Micrel, Inc.
3.3V, 3.2Gbps DIFFERENTIAL 4:1 LVDS
MULTIPLEXER with 1:2 FANOUT and
INTERNAL TERMINATION
Precision Edge®
Precision ESdYg89e5®47L
SY89547L
FEATURES
â Selects among four differential inputs
â Provides two copies of the selected input
â Guaranteed AC performance over temp and voltage:
⢠DC-to > 3.2Gbps data rate throughput
⢠< 620ps In-to-Out tpd
⢠< 150ps tr/tf
â Unique input isolation design minimizes crosstalk
â Ultra-low jitter design:
⢠< 1psRMS random jitter
⢠< 10psPP deterministic jitter
⢠< 10psPP total jitter (clock)
⢠< 0.7psRMS crosstalk-induced jitter
â Internal input termination
â Unique input termination and VT pin accepts DC-
coupled and AC-coupled inputs (LVDS, LVPECL,
CML)
â 350mV LVDS output swing
â Power supply 3.3V ±10%
â â40°C to +85°C temperature range
â Available in 32-pin (5mm x 5mm) MLF⢠package
APPLICATIONS
Precision Edge®
DESCRIPTION
The SY89547L is a precision, high-speed 4:1 differential
multiplexer that provides two copies of the selected input.
The high speed LVDS (350mV) compatible outputs with a
guaranteed throughput of up to 3.2Gbps over temperature
and voltage.
The SY89547L differential inputs include Micrelâs unique,
3-pin internal termination design that allows access to the
termination network through a VT 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 SY89547L operates from a single 3.3V supply, and
is guaranteed over the full industrial temperature range
(â40°C to +85°C). For applications that require a 2.5V supply,
consider the SY89546U. For applications that only require
one differential output, consider the SY89544U or SY89545L.
The SY89547L is part of a Micrelâs Precision Edge® product
family. All support documentation can be found on Micrelâs
web site at: www.micrel.com.
â SONET/SDH multi-channel select applications
â Fibre Channel applications
â GigE applications
TYPICAL PERFORMANCE
Output Amplitude
vs. Frequency
400
350
300
250
200
150
100
50
00 1000 2000 3000 4000 5000 6000
FREQUENCY (MHz)
FUNCTIONAL BLOCK DIAGRAM
IN0
50â¦
VT0
50â¦
/IN0
4:1 MUX
IN1
50â¦
VT1
50â¦
/IN1
IN2
50â¦
VT2
50â¦
/IN2
0
1
MUX
2
S1
3 S0
1:2 Fanout
Q0
/Q0
LVDS
Q1
/Q1
IN3
50â¦
VT3
50â¦
/IN3
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology.
M9999-060906
hbwhelp@micrel.com or (408) 955-1690
1
SEL0 (CMOS/TTL)
SEL1 (CMOS/TTL)
Rev.: B Amendment: /1
Issue Date: June 2006
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