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MAX9157
Quad Bus LVDS Transceiver

Smallest Quad Bus LVDS Transceiver


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 364kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

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 x 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.

Key Features   Applications/Uses
  		• 32-TQFP and Space-Saving 32-QFN Packages
  		• 52mV LVDS Input Hysteresis
  		• 1ns (min) Transition Time (0% to 100%) Minimizes Reflections
  		• Guaranteed 7.2pF (max) Bus Load Capacitance
  		• Glitch-Free Power-Up and Power-Down
  		• Hot-Swappable, High-Impedance I/O with VCC = 0 or Open
  		• Guaranteed 200Mbps Driver Data Rate
  		• Fail-Safe Circuit
  		• Flow-Through Pinout

    		  
  		• Add/Drop Multiplexers
  		• Cell Phone Base Stations
  		• Digital Cross-Connects
  		• DSLAM
  		• Multipoint Buses
  		• Network Routers and Switches

    Key Specifications:  High-Speed Interconnect (Differential Signaling)
    Part Number Features Signal Type Signal Type Functions Rx Tx Data Rates
    (Mbps)    		 tPD
    (ps)    		 VSUPPLY
    (V)    		 Price
    Rx Tx max See Notes
    MAX9157 
    Bus LVDS I/O
    Fail-Safe Inputs
    Flow-Through Pinout
    Rx Hi-Z at Power-Off
    		 LVDS LVDS Transceiver 4 4 200 4100 3.3 $3.99 @1k
    See All High-Speed Interconnect (Differential Signaling) (132)

    Diagram
    MAX9157: Typical Operating Circuit
    Typical Operating Circuit

    Design Guides
  		• Fiber (PDF)

    Reliability Reports
  		• Show FIT data for:
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    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-6 of 6

    MAX9157 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9157EGJ+    
    		Active QFN;32 pin;26 mm²
    Outline Drawing: 21-0091 (PDF)
    Land Pattern: 90-0279 (PDF)
    Use pkgcode/variation: G3255+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9157EGJ+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX9157EHJ    
    		Active TQFP;32 pin;52 mm²
    Outline Drawing: 21-0110 (PDF)
    Land Pattern: 90-0149 (PDF)
    Use pkgcode/variation: H32-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9157EHJ-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX9157EHJ+  
    		Active TQFP;32 pin;52 mm²
    Outline Drawing: 21-0110 (PDF)
    Land Pattern: 90-0149 (PDF)
    Use pkgcode/variation: H32+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9157EHJ+T    
    		Active TQFP;32 pin;52 mm²
    Outline Drawing: 21-0110 (PDF)
    Land Pattern: 90-0149 (PDF)
    Use pkgcode/variation: H32+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• New Product Press Release 2002-02-26 

    Related Products
    MAX9129 Quad Bus LVDS Driver with Flow-Through Pinout
    MAX9155 Low-Jitter, Low-Noise LVDS Repeater in an SC70 Package

    More Like This: View Product Families for Similar Products

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    Document Ref.: 19-2287; Rev 0; 2002-02-20
    This page last modified: 2007-07-05


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