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Data Sheet

FULL DATA SHEET (PDF, 668kB) Download   E-Mail

Description

The DS21349 is a fully integrated LIU for long-haul or short-haul T1 applications over twisted-pair installations. It interfaces to two twisted-pair lines—one pair for transmit and one pair for receive through an appropriate network interface. The device can be configured for control through software or hardware mode. Software control is accomplished over a serial port, in hardware mode; individual pin settings allow standalone operation. The device provides a precise, crystal-less jitter attenuator that can be placed in either the transmit or receive path.

Key Features		Applications/Uses
Fully integrated line interface unit (LIU) Pin compatible with LevelOne LXT362 Supports both long haul and short haul Crystal-less jitter attenuator Jitter attenuator programmable for transmit or receive path Meets ANSI T1.102, T1.403, T1.408, and AT&T 62411 Usable receive sensitivity of 0dB to -36dB that allows the device to operate on 0.63mm (22AWG) cables up to 6k feet in length Five line buildout settings for short-haul applications Four CSU filters from 0dB to -22.5dB Transmit/receive performance monitors with driver-fail, monitor-open, and loss-of-signal outputs Bipolar or NRZ interface Programmable B8ZS encoder/decoder QRSS generator/detector Local, remote, and analog loopbacks Generates and detects in-band loop-up and loop-down codes Serial interface provides access to control registers		Channel Banks Channel Service Units (CSUs) Data Service Units (DSUs) Muxes Routers/Switches Routers/Switches T1/E1 Test Equipment

Application Notes

Application Note 351: T1/E1 and T3/E3 Transformer Selection Guide - DS21349 Application Note 370: Using RCLK in a BITS/SSU Application - DS21349

Evaluation Kits

DS21349DK, DS2149DK

Design Guides

Communications (PDF)

Reliability Reports

Reliability Report: DS21349.pdf

Software/Models

none

Ordering Information
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. 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: 1-6 of 6
DS21349	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS21349Q			PLCC;28 pin;158 mm² Outline Drawing: 21-0049 (PDF) Land Pattern: Not Available Use pkgcode/variation: Q28-11*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS21349Q/T&R			PLCC;28 pin;158 mm² Outline Drawing: 21-0049 (PDF) Land Pattern: Not Available Use pkgcode/variation: Q28-11*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS21349Q+			PLCC;28 pin;158 mm² Outline Drawing: 21-0049 (PDF) Land Pattern: Not Available Use pkgcode/variation: Q28+11*	0°C to +70°C	See data sheet
DS21349Q+T&R			PLCC;28 pin;158 mm² Outline Drawing: 21-0049 (PDF) Land Pattern: Not Available Use pkgcode/variation: Q28+11*	0°C to +70°C	See data sheet
DS21349QN			PLCC;28 pin;158 mm² Outline Drawing: 21-0049 (PDF) Land Pattern: Not Available Use pkgcode/variation: Q28-11*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS21349QN/T&R			PLCC;28 pin;158 mm² Outline Drawing: 21-0049 (PDF) Land Pattern: Not Available Use pkgcode/variation: Q28-11*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

Related Products

DS2149 5V T1/J1 Line Interface Unit DS2148, DS21Q48 5V E1/T1/J1 Line Interface DS21348, DS21Q348 3.3V E1/T1/J1 Line Interface

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Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

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