MAX9121, MAX9122 Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout

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.

Key Features

Applications/Uses

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

	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

Key Specifications: High-Speed Interconnect (Differential Signaling)

Part Number

Features

Rx Signal Type

Tx Signal Type

Functions

Number of Rx

Number of Tx

Data Rates (Mbps)

Propagation Delay (max) (ps)

Supply Voltage (V)

Pulse Skew (max) (ps)

Channel-to-Channel Skew (max) (ps)

Output Transition Time (max) (ps)

ESD Protection (±kV)

RoHS Available

Package

Price^**

MAX9121

•	Fail-Safe Inputs

•	Flow-Through Pinout

LVDS

CMOS
LVTTL

•	Level Translator

500

2700

3.3

300

400

1,000

Yes

TSSOP/16

$1.99 @ 1k

MAX9122

•	Fail-Safe Inputs

•	Flow-Through Pinout

•	Integrated Input Termination

SOIC/16
TSSOP/16

$1.99 @ 1k

See All High-Speed Interconnect (Differential Signaling) (131)

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.

Reliability Reports


		Show FIT data for:

		Reliability Report: MAX9121ExE.pdf

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Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part 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.

Devices: 1-10 of 10

MAX9121

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX9121EUE+T

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9121EUE+

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9121EUE

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX9121EUE-T

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX9122

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX9122ESE+

SOIC;16 pin;
Dwg: 21-0041B (PDF)
Use pkgcode/variation: S16+3*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9122ESE+T

-40°C to +85°C

See data sheet

MAX9122EUE-T

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX9122EUE+

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9122EUE

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX9122EUE+T

TSSOP;16 pin;
Dwg: 21-0066J (PDF)
Use pkgcode/variation: U16+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

Related Products

MAX9150 Low-Jitter, 10-Port LVDS Repeater
MAX9123 Quad LVDS Line Driver with Flow-Through Pinout
MAX9110, MAX9112 Single/Dual LVDS Line Driver with Ultra-Low Differential Skew in SOT23