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MAX9157
Quad Bus LVDS Transceiver
Smallest Quad Bus LVDS Transceiver
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Status
Active: In Production.
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.
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Data Sheet
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Key Features
- 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
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Applications/Uses
- Add/Drop Multiplexers
- Cell Phone Base Stations
- Digital Cross-Connects
- DSLAM
- Multipoint Buses
- Network Routers and Switches
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Key Specifications:
| High-Speed Interconnect (Differential Signaling) |
| Part Number |
Signal Type |
Signal Type |
Functions |
Rx |
Tx |
Data Rates
(Mbps) |
tPD
(ps) |
VSUPPLY
(V) |
Budgetary Price |
| Rx |
Tx |
max |
See Notes |
| MAX9157 |
LVDS |
LVDS |
Transceiver |
4 |
4 |
200 |
4100 |
3.3 |
$3.99 @1k |
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See All High-Speed Interconnect (Differential Signaling) (136)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX9157EGJ
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Active |
QFN;32 pin;26 mm²
Outline Drawing:21-0091 (PDF)
Land Pattern: 90-0279 (PDF)
Use pkgcode/variation: G3255-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX9157EGJ+
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Active |
QFN;32 pin;26 mm²
Outline Drawing:21-0091 (PDF)
Land Pattern: 90-0279 (PDF)
Use pkgcode/variation: G3255+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9157EGJ+T
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Active |
QFN;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX9157EGJ-T
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Active |
QFN;32 pin;26 mm²
Outline Drawing:21-0091 (PDF)
Land Pattern: 90-0279 (PDF)
Use pkgcode/variation: G3255-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX9157EHJ
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Active |
TQFP;32 pin;51.8 mm²
Outline Drawing:21-0110 (PDF)
Land Pattern: 90-0149 (PDF)
Use pkgcode/variation: H32-1*
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-40°C to +85°C
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See data sheet
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| MAX9157EHJ+
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Active |
TQFP;32 pin;51.8 mm²
Outline Drawing:21-0110 (PDF)
Land Pattern: 90-0149 (PDF)
Use pkgcode/variation: H32+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9157EHJ+T
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Active |
TQFP;32 pin;51.8 mm²
Outline Drawing:21-0110 (PDF)
Land Pattern: 90-0149 (PDF)
Use pkgcode/variation: H32+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9157EHJ-T
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Active |
TQFP;32 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * 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.
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Similar Products by Function
| MAX9129 |
Quad Bus LVDS Driver with Flow-Through Pinout |
| MAX9155 |
Low-Jitter, Low-Noise LVDS Repeater in an SC70 Package |
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Similar Products by Application
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-2287
Rev 0;
2002-02-20
This page last modified: 2007-07-05
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