19-2213; Rev 0; 10/01
Low-Jitter, Low-Noise LVDS
Repeater in an SC70 Package
General Description
The MAX9155 is a low-voltage differential signaling
(LVDS) repeater, which accepts a single LVDS input
and duplicates the signal at a single LVDS output. Its
low-jitter, low-noise performance makes it ideal for
buffering LVDS signals sent over long distances or
noisy environments, such as cables and backplanes.
The MAX9155鈥檚 tiny size makes it especially suitable for
minimizing stub lengths in multidrop backplane appli-
cations. The SC70 package (half the size of a SOT23)
allows the MAX9155 to be placed close to the connec-
tor, thereby minimizing stub lengths and reflections on
the bus. The point-to-point connection between the
MAX9155 output and the destination IC, such as an
FPGA or ASIC, allows the destination IC to be located
at greater distances from the bus connector.
Ultra-low, 23ps
p-p
added deterministic jitter and
0.6ps
RMS
added random jitter ensure reliable commu-
nication in high-speed links that are highly sensitive to
timing errors, especially those incorporating clock-and-
data recovery, PLLs, serializers, or deserializers. The
MAX9155鈥檚 switching performance guarantees a
200Mbps data rate, but minimizes radiated noise by
guaranteeing 0.5ns minimum output transition time.
The MAX9155 has fail-safe circuitry that sets the output
high for undriven open, short, or terminated inputs.
The MAX9155 operates from a single +3.3V supply and
consumes only 10mA over a -40掳C to +85掳C tempera-
ture range. Refer to the MAX9129 data sheet for a quad
bus LVDS driver, and to the MAX9156 data sheet for a
low-jitter, low-noise LVPECL-to-LVDS level translator in
an SC70 package.
o
Tiny SC70 Package
o
Ultra-Low Jitter
23ps
p-p
Added Deterministic Jitter
(2
23
-1 PRBS)
0.6ps
RMS
Added Random Jitter
o
0.5ns (min) Transition Time Minimizes Radiated
Noise
o
200Mbps Guaranteed Data Rate
o
Fail-Safe Circuit Sets Output High for Undriven
Inputs (Open, Terminated, or Shorted)
o
Low 10mA Supply Current
o
Low 6mA Supply Current in Fail-Safe
o
Conforms to ANSI/EIA/TIA-644 LVDS Standard
o
High-Impedance Inputs and Outputs in
Power-Down Mode
Features
MAX9155
Ordering Information
PART
MAX9155EXT-T
TEMP. RANGE
-40掳C to +85掳C
PIN-
PACKAGE
6 SC70-6
TOP
MARK
ABC
Applications
Cellular Phone Base Stations
DSLAMs
Digital Cross-Connects
Add/Drop Muxes
Network Switches/Routers
Multidrop Buses
Cable Repeaters
IN- 3
GND 2
Pin Configuration
TOP VIEW
MAX9155
OUT- 1
6
OUT+
5
V
CC
4
IN+
Typical Operating Circuit appears at end of data sheet.
SC70
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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