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MAX9121, MAX9122
Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout
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Status
Active: In Production.
Description
The MAX9121/MAX9122 quad low-voltage differential signaling (LVDS) differential line receivers are ideal for applications requiring high data rates, low power, and low noise. The MAX9121/MAX9122 are guaranteed to receive data at speeds up to 500Mbps (250MHz) over controlled-impedance media of approximately 100Ω. The transmission media may be printed circuit (PC) board traces or cables.
The MAX9121/MAX9122 accept four LVDS differential inputs and translate them to LVCMOS outputs. The MAX9122 features integrated parallel termination resistors (nominally 107Ω), which eliminate the requirement for four discrete termination resistors and reduce stub lengths. The MAX9121 inputs are high impedance and require an external termination resistor when used in a point-to-point connection.
The devices support a wide common-mode input range of 0.05V to 2.35V, allowing for ground potential differences and common-mode noise between the driver and the receiver. A fail-safe feature sets the output high when the inputs are open, or when the inputs are undriven and shorted or parallel terminated. The EN and active-low EN inputs control the high-impedance output. The enables are common to all four receivers. Inputs conform to the ANSI TIA/EIA-644 LVDS standard. Flow-through pinout simplifies PC board layout and reduces crosstalk by separating the LVDS inputs and LVCMOS outputs. The MAX9121/MAX9122 operate from a single +3.3V supply, and are specified for operation from -40°C to +85°C. These devices are available in 16-pin TSSOP and SO packages. Refer to the MAX9123 data sheet for a quad LVDS line driver with flow-through pinout.
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Data Sheet
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An evaluation kit is available: MAX9121EVKIT
Key Features
- Integrated Termination Eliminates Four External Resistors (MAX9122)
- Flow-Through Pinout
- Simplifies PC Board Layout
- Reduces Crosstalk
- Pin Compatible with DS90LV048A
- Guaranteed 500Mbps Data Rate
- 300ps Pulse Skew (max)
- Conform to ANSI TIA/EIA-644 LVDS Standard
- Single +3.3V Supply
- Fail-Safe Circuit
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Applications/Uses
- Add/Drop Multiplexers
- Backplane and Interconnect Applications
- Cell Phone Base Stations
- Clock/Data Distribution
- Digital Copiers
- Digital Cross-Connects
- DSLAM
- Laser Printers
- 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 |
| MAX9121 |
LVDS |
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Level Translator |
4 |
4 |
500 |
2700 |
3.3 |
$2.15 @1k |
| MAX9122 |
$1.99 @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 Application Circuit
Application Notes
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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| MAX9121EUE
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX9121EUE+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9121EUE+T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9121EUE-T
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Active |
TSSOP;16 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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| MAX9122ESE+
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Active |
SOIC(N);16 pin;62 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0097 (PDF)
Use pkgcode/variation: S16+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9122ESE+T
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Active |
N.SO;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX9122EUE
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX9122EUE+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9122EUE+T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9122EUE-T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
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
| MAX9110, MAX9112 |
Single/Dual LVDS Line Driver with Ultra-Low Differential Skew in SOT23 |
| MAX9150 |
Low-Jitter, 10-Port LVDS Repeater |
| MAX9123 |
Quad LVDS Line Driver with Flow-Through Pinout |
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Similar Products by Application
Evaluation Kits
| MAX9121EVKIT |
Evaluation Kit for the MAX9121, MAX9122, MAX9123 |
Products with Similar Part Numbers
| MAX9121EVKIT |
Evaluation Kit for the MAX9121, MAX9122, MAX9123 |
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-1909
Rev 0;
2001-07-24
This page last modified: 2008-10-07
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