DS3251+ Maxim Integrated Products, DS3251+ Datasheet

DS3251+

Manufacturer Part Number

DS3251+

Description

IC LIU DS3/E3/STS-1 144-CSBGA

Manufacturer

Maxim Integrated Products

Type

Line Interface Units (LIUs)r

Datasheets

1.DS3251.pdf (71 pages)

2.DS3251.pdf (130 pages)

3.DS3251.pdf (71 pages)

Specifications of DS3251+

Number Of Drivers/receivers

1/1

Protocol

DS3

Voltage - Supply

3.135 V ~ 3.465 V

Mounting Type

Surface Mount

Package / Case

144-CSBGA

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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GENERAL DESCRIPTION

The DS32506 (6 port), DS32508 (8 port), and

DS32512 (12 port) line interface units (LIUs) are

highly integrated, low-power, feature-rich LIUs for

DS3, E3, and STS-1 applications. Each LIU port in

these devices has independent receive and transmit

paths,

generator

counters, and a complete set of loopbacks. An on-

chip clock adapter generates all line-rate clocks from

a single input clock. Ports are independently software

configurable for DS3, E3, and STS-1 and can be

individually powered down. Control interface options

include 8-bit parallel, SPI, and hardware mode.

APPLICATIONS

FUNCTIONAL DIAGRAM

SONET/SDH and PDH

Multiplexers

ATM and Frame Relay

Equipment

WAN Routers and

Switches

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

www.maxim-ic.com

OR STS-1

LINE OUT

OR STS-1

DS3, E3,

LINE IN

and

jitter

TXP

TXN

RXP

RXN

detector,

Semiconductor

attenuator,

EACH LIU

DS325xx

Dallas

DATA

CLK

performance-monitoring

Digital Cross-

Connects

Access Concentrators

CSUs/DSUs

PBXs

DSLAMs

full-featured

AND DATA

TRANSMIT

AND DATA

CONTROL

RECEIVE

STATUS

CLOCK

AND

pattern

1 of 130

6-/8-/12-Port DS3/E3/STS-1 LIU

FEATURES

ORDERING INFORMATION

Note: Add the “+” suffix for the lead-free package option.

DS32506/DS32508/DS32512

DS32506

DS32506N

DS32508

DS32508N

DS32512

DS32512N

PART

Pin-Compatible Family of Products

Each Port Independently Configurable

Receive Clock and Data Recovery for Up to 457

meters (1500 feet) of 75Ω Coaxial Cable

Standards-Compliant Transmit Waveshaping

Uses 1:1 Transformers on Both Tx and Rx

Three Control Interface Options: 8/16-Bit

Parallel, SPI, and Hardware Mode

Jitter Attenuators (One Per Port) Can be Placed

in the Receive Path or the Transmit Path

Jitter Attenuators Have Provisionable Buffer

Depth: 16, 32, 64, or 128 bits

Built-In Clock Adapter Generates All Line-Rate

Clocks from a Single Input Clock (DS3, E3, STS-1,

12.8MHz, 19.44MHz, 38.88MHz, 77.76MHz)

Per-Port Programmable Internal Line Termination

Requiring Only External Transformers

High-Impedance Tx and Rx, Even When V

Enables Hot-Swappable, 1:1 and 1+1 Board

Redundancy Without Relays

Per-Port BERT for PRBS and Repetitive Pattern

Generation and Detection

Tx and Rx Open and Short Detection Circuitry

Transmit Driver Monitor Circuitry

Receive Loss-of-Signal (LOS) Monitoring

Compliant with ANSI T1.231 and ITU G.775

Automatic Data Squelching on Receive LOS

Large Line Code Performance-Monitoring

Counters for Accumulation Intervals Up to 1s

Local and Remote Loopbacks

Transmit Common Clock Option

Power-Down Capability for Unused Ports

Low-Power 1.8V/3.3V Operation (5V Tolerant

I/O)

Industrial Temperature Range: -40°C to +85°C

Small Package: 23mm x 23mm, 484-Pin BGA

IEEE 1149.1 JTAG Support

LIUs

-40°C to +85°C

TEMP RANGE

0°C to +70°C

484 BGA

PIN-

PACKAGE

484 BGA

REV: 062906

= 0,

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