For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

General Description

The MAX3885 deserializer is ideal for converting

2.488Gbps serial data to 16-bit wide, 155Mbps parallel

data in SDH/SONET applications. Operating from a sin-

gle +3.3V supply, this device accepts PECL serial

clock and data inputs, and delivers low-voltage differ-

ential-signal (LVDS) clock and data outputs for interfac-

ing with high-speed digital circuitry. It also provides an

LVDS synchronization input that enables data realign-

ment and reframing. The MAX3885 is available in the

extended temperature range (-40°C to +85°C) in a 64-

pin TQFP package.

Applications

2.488Gbps SDH/SONET Transmission Systems

Add/Drop Multiplexers

Digital Cross Connects

Features

o Single +3.3V Supply

o 2.488Gbps Serial to 155Mbps Parallel Conversion

o 660mW Operating Power

o LVDS Data Outputs and Synchronization Inputs

o Self-Biasing PECL Inputs Ease AC Coupling

o Synchronization Inputs for Data Realignment and

Reframing

+3.3V, 2.488Gbps, SDH/SONET

1:16 Deserializer with LVDS Outputs

________________________________________________________________

Maxim Integrated Products

1

19-4767; Rev 2; 1/99

PART

MAX3885ECB

-40°C to +85°C

TEMP. RANGE

PIN-PACKAGE

64 TQFP

EVALUATION

KIT MANUAL

FOLLOWS

DATA

SHEET

Pin Configuration appears at end of data sheet.

Ordering Information

Typical Operating Circuit

MAX3875

MAX3885

DATA

AND

CLOCK

RECOVERY

SERIAL DATA

INPUTS

OVERHEAD

TERMINATION

100

Ω*

100

Ω*

100

Ω*

PD15+

PD15-

SD+

SD-

*REQUIRED ONLY IF OVERHEAD CIRCUIT DOES NOT INCLUDE INTERNAL INPUT TERMINATION.

GND

133

Ω

133

Ω

86.6

Ω

86.6

Ω

133

Ω

133

Ω

86.6

Ω

86.6

Ω

SCLK+

SCLK-

PD0+

•

•

•

PD0-

PCLK+

PCLK-

SYNC+

SYNC-