19-2213; Rev 0; 10/01
Low-Jitter, Low-Noise LVDS
Repeater in an SC70 Package
General Description
Features
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.
ꢀ Tiny SC70 Package
ꢀ Ultra-Low Jitter
23ps
Added Deterministic Jitter
p-p
(223-1 PRBS)
0.6ps Added Random Jitter
RMS
The MAX9155’s 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.
ꢀ 0.5ns (min) Transition Time Minimizes Radiated
Noise
ꢀ 200Mbps Guaranteed Data Rate
ꢀ Fail-Safe Circuit Sets Output High for Undriven
Inputs (Open, Terminated, or Shorted)
ꢀ Low 10mA Supply Current
ꢀ Low 6mA Supply Current in Fail-Safe
ꢀ Conforms to ANSI/EIA/TIA-644 LVDS Standard
Ultra-low, 23ps
added deterministic jitter and
p-p
0.6ps
added random jitter ensure reliable commu-
RMS
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’s switching performance guarantees a
200Mbps data rate, but minimizes radiated noise by
guaranteeing 0.5ns minimum output transition time.
ꢀ High-Impedance Inputs and Outputs in
Power-Down Mode
Ordering Information
The MAX9155 has fail-safe circuitry that sets the output
high for undriven open, short, or terminated inputs.
TOP
MARK
PIN-
PACKAGE
PART
TEMP. RANGE
The MAX9155 operates from a single +3.3V supply and
consumes only 10mA over a -40°C to +85°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.
MAX9155EXT-T
-40°C to +85°C
6 SC70-6
ABC
Applications
Pin Configuration
Cellular Phone Base Stations
DSLAMs
TOP VIEW
Digital Cross-Connects
Add/Drop Muxes
MAX9155
OUT-
1
2
3
6
5
4
OUT+
Network Switches/Routers
Multidrop Buses
GND
IN-
V
CC
Cable Repeaters
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’s website at www.maxim-ic.com.