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MAX9157

Maxim
Part Number MAX9157
Manufacturer Maxim
Description Quad Bus LVDS Transceiver
Published May 2, 2005
Detailed Description 19-2287; Rev 0; 1/02 Quad Bus LVDS Transceiver General Description The MAX9157 is a quad bus LVDS (BLVDS) transceiver f...
Datasheet PDF File MAX9157 PDF File

MAX9157
MAX9157

Overview
19-2287; Rev 0; 1/02 Quad Bus LVDS Transceiver General Description The MAX9157 is a quad bus LVDS (BLVDS) transceiver for heavily loaded, half-duplex multipoint buses.
Small 32-pin QFN and TQFP packages and flow-through pinouts allow the transceiver to be placed near the connector for the shortest possible stub length.
The MAX9157 drives LVDS levels into a 27Ω load (double terminated, heavily loaded LVDS bus) at up to 200Mbps.
An input fail-safe circuit ensures the receiver output is high when the differential inputs are open, or undriven and shorted, or undriven and terminated.
The MAX9157 differential inputs feature 52mV hysteresis for greater immunity to bus noise and reflections.
The MAX9157 operates from a single 3.
3V supply, consuming 80.
9mA supply current with drivers enabled, and 22.
7mA with drivers disabled.
The MAX9157’s high-impedance I/Os (except for receiver outputs) when VCC = 0 or open, combined with glitch-free power-up and power-down, allow hot swapping of cards in multicard bus systems; 7.
2pF (max) BLVDS I/O capacitances minimize bus loading.
The MAX9157 is offered in 5mm ✕ 5mm 32-pin QFN and TQFP packages.
The MAX9157 is fully specified for the -40°C to +85°C extended temperature range.
Refer to the MAX9129 data sheet for a quad BLVDS driver, ideal for dual multipoint full-duplex buses.
o 52mV LVDS Input Hysteresis o 1ns (min) Transition Time (0% to 100%) Minimizes Reflections o Guaranteed 7.
2pF (max) Bus Load Capacitance o Glitch-Free Power-Up and Power-Down o Hot-Swappable, High-Impedance I/O with VCC = 0 or Open o Guaranteed 200Mbps Driver Data Rate o Fail-Safe Circuit o Flow-Through Pinout Features o 32-TQFP and Space-Saving 32-QFN Packages MAX9157 Ordering Information PART MAX9157EGJ MAX9157EHJ TEMP RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 32 QFN (5mm ✕ 5mm) 32 TQFP (5mm ✕ 5mm) Applications Add/Drop Muxes Digital Cross-Connects Network Switches/Routers Cellular Phone Base Stations DSLAMs Multipoint Buses Pin Configurations appear...


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