max9122euet Maxim Integrated Products, Inc., max9122euet Datasheet

max9122euet

Manufacturer Part Number

max9122euet

Description

Quad Lvds Line Receivers With Integrated Termination And Flow-through Pinout

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX9122EUET.pdf (12 pages)

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The MAX9121/MAX9122 quad low-voltage differential sig-

naling (LVDS) differential line receivers are ideal for appli-

cations 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 transmis-

sion 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 resis-

tors (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 EN inputs con-

trol 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 dri-

ver with flow-through pinout.

19-1909; Rev 0; 6/01

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Integrated Termination and Flow-Through Pinout

Digital Copiers

Laser Printers

Cellular Phone Base Stations

Add/Drop Muxes

Digital Cross-Connects

DSLAMs

Network Switches/Routers

Backplane Interconnect

Clock Distribution

________________________________________________________________ Maxim Integrated Products

General Description

Applications

Quad LVDS Line Receivers with

o Integrated Termination Eliminates Four External

o Flow-Through Pinout

o Pin Compatible with DS90LV048A

o Guaranteed 500Mbps Data Rate

o 300ps Pulse Skew (max)

o Conform to ANSI TIA/EIA-644 LVDS Standard

o Single +3.3V Supply

o Fail-Safe Circuit

____________________________Features

Pin Configuration appears at end of data sheet.

LVTTL/LVCMOS

DATA INPUT

Resistors (MAX9122)

MAX9121EUE

MAX9122EUE

MAX9121ESE

MAX9122ESE

Simplifies PC Board Layout

Reduces Crosstalk

PART

100Ω SHIELDED TWISTED CABLE OR MICROSTRIP PC BOARD TRACES

MAX9123

Typical Application Circuit

TEMP. RANGE

-40°C to +85°C

Ordering Information

LVDS SIGNALS

107Ω

MAX9122

PIN-PACKAGE

16 TSSOP

16 SO

16 TSSOP

16 SO

LVTTL/LVCMOS

DATA OUTPUT

Related parts for max9122euet

max9122euet Summary of contents

Page 1

Rev 0; 6/01 Integrated Termination and Flow-Through Pinout General Description The MAX9121/MAX9122 quad low-voltage differential sig- naling (LVDS) differential line receivers are ideal for appli- cations requiring high data rates, low power, and low noise. The MAX9121/MAX9122 are guaranteed ...

Page 2

Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +4.0V CC IN_+, IN_- to GND .................................................-0.3V to +4.0V EN GND ...........................................-0. OUT_ to GND .............................................-0. ...

Page 3

Integrated Termination and Flow-Through Pinout DC ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V, differential input voltage | -40°C to +85°C. Typical values are PARAMETER SYMBOL LOGIC INPUTS (EN, EN) Input High Voltage Input ...

Page 4

Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout AC ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 15pF, differential input voltage | /2|, input rise and fall time = 1ns (20% to 80%), ...

Page 5

Integrated Termination and Flow-Through Pinout (V = +3.3V +1.2V 0.2V OUTPUT LOW VOLTAGE vs. SUPPLY VOLTAGE 100 3.0 3.3 SUPPLY VOLTAGE (V) DIFFERENTIAL ...

Page 6

Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout PIN NAME IN_- Inverting Differential Receiver Inputs IN_+ Noninverting Differential Receiver Inputs Receiver Enable Inputs. When EN = high and EN = ...

Page 7

Integrated Termination and Flow-Through Pinout IN2 V - 0.3V CC IN_+ R IN1 R IN1 IN_- MAX9121 Figure 1. Input with Fail-Safe Network received. Open or undriven terminated input conditions can occur when a cable is disconnected ...

Page 8

Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout GENERATOR** Figure 2. Propagation Delay and Transition Time Test Circuit IN_- IN_ IN_+ IN_- NOTE ...

Page 9

Integrated Termination and Flow-Through Pinout Figure 4. High-Impedance Delay Test Circuit EN WHEN EN = GND OR OPEN EN WHEN OUTPUT WHEN V = -100mV ID OUTPUT WHEN V = +100mV ID Figure 5. High-Impedance Delay ...

Page 10

Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout IN1+ IN1- IN2+ IN2- IN3+ IN3- IN4+ IN4 TOP VIEW 10 ______________________________________________________________________________________ V CC IN1+ OUT1 107Ω IN1- IN2+ OUT2 107Ω IN2- IN3+ OUT3 107Ω IN3- IN4+ OUT4 ...

Page 11

Integrated Termination and Flow-Through Pinout ______________________________________________________________________________________ Quad LVDS Line Receivers with Package Information 11 ...

Page 12

Quad LVDS Line Receivers with Integrated Termination and Flow-Through Pinout Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change ...

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