SY89545L_08 Datasheet, PDF (1/10 Pages) Micrel Semiconductor – 3.3V, 3.2Gbps DIFFERENTIAL 4:1 LVDS MULTIPLEXER with INTERNAL INPUT TERMINATION

Micrel, Inc.
3.3V, 3.2Gbps DIFFERENTIAL
4:1 LVDS MULTIPLEXER with
INTERNAL INPUT TERMINATION
Precision Edge^®
Precision E^Sd^Y8g⁹e^5®45L
SY89545L
FEATURES
Selects among four differential inputs
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 3.3V +10%
–40°C to +85°C temperature range
Available in 32-pin (5mm x 5mm) MLF^® package
Precision Edge^®
DESCRIPTION
The SY89545L is a fast, low jitter 4:1 differential MUX
with an LVDS (350mV) compatible output with guaranteed
data rate throughput of 3.2Gbps over temperature and
voltage.
The SY89545L 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 SY89545L operates from a single 3.3V supply, and
is guaranteed over the full industrial temperature range
(–40°C to +85°C). For applications that require a 2.5V supply,
consider the SY89544U. For applications that require two
differential outputs, consider the SY89546U or
SY89545L.The SY89545L is part of a Micrel’s Precision
Edge^® product family. All support documentation can be
found on Micrel’s web site at www.micrel.com.
APPLICATIONS
SONET/SDH channel select applications
Fiber Channel multi-channel select applications
Gigabit Ethernet multi-channel select
TYPICAL PERFORMANCE
Output Amplitude
vs. Frequency
400
350
300
250
200
150
100
50
00 _{1 2 3 4 5 6}
FREQUENCY (GHz)
FUNCTIONAL BLOCK DIAGRAM
IN0
50Ω
V_T0
50Ω
/IN0
IN1
50Ω
V_T1
50Ω
/IN1
4:1 MUX
0
1
IN2
50Ω
V_T2
50Ω
/IN2
MUX
2
S1
3 ^S0
IN3
50Ω
V_T3
50Ω
/IN3
LVDS
Q
/Q
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-060308
[e-mail] or [phone]
1
SEL0
SEL1
Rev.: D Amendment: /0
Issue Date: June 2008