XRT5794ES-TQFP Exar, XRT5794ES-TQFP Datasheet

XRT5794ES-TQFP

Manufacturer Part Number

XRT5794ES-TQFP

Description

Peripheral Drivers & Components - PCIs 4 CH E1 AFE

Manufacturer

Exar

Datasheet

1.XRT5794ES-TQFP.pdf (20 pages)

Specifications of XRT5794ES-TQFP

Product Category

Peripheral Drivers & Components - PCIs

Rohs

yes

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FEATURES

GENERAL DESCRIPTION

The XR-T5794 is an optimized line interface unit, built

using low power CMOS technology. The device contains

four independent E1 channels for primary rate, PCM

applications up to 2.048Mbps. Each channel performs

the driver and receiver functions necessary to convert

bipolar signals to TTL/CMOS compatible logic levels and

vice versa.

balanced line interfaces on each channel, thereby

providing the user an option of reducing system cost and

board space by replacing the transformer with a

capacitor.

Each of the four drivers can be independently disabled,

allowing

management.

compliant. Moreover, the return loss is at least 18dB over

a frequency range of 51kHz to 3.072MHz.

The slicing circuit in the receive path is able to tolerate a

maximum of 12dB of cable loss with a minimum input

ORDERING INFORMATION

Meets CCITT G.703 Pulse Mask Template for

2.048Mbps (E1) Rates

Transmitter and Receiver Interfaces Can Be:

– Single Ended, 75 Capacitive or Transformer

– Balanced, 100 or 120 Transformer Coupled

Minimum Return Loss is 20dB (Receive) and 18dB

(Transmit), Exceeds G.703 and ETSI 300 166

Specifications

Bipolar Outputs can be Disabled Individually (High Z

Outputs)

System Interface is TTL Compatible on Digital Input

and TTL/CMOS Compatible On Digital Output Pins

Rev. 2.02

1994

Coupled

maximum

The device supports single ended or

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538

Output pulses are fully CCITT G.703

XR-T5794IV

XR-T5794IJ

Part No.

flexibility

...the analog plus company

system

80 Lead TQFP (14x14x1.4 mm)

68 Lead PLCC

power

Package

APPLICATIONS

sensitivity of 600mV over the operating temperature

range. Return loss on the receive interfaces is minimum

20dB from 51kHz to 3.072MHz.

Local and remote loopbacks can be performed on any of

the four channels.

detection circuitry and a LOS pin is provided for each

input. A fifth transmitter has been provided to support

dedicated monitoring and testing purposes on any of the

eight bipolar paths. For designers not requiring the fifth

(monitor) driver, EXAR offers the XR-T5793, a pin

compatible version of the XR-T5794.

The XR-T5794 is targeted for multi-line E1 line card

applications where real estate, low power consumption

and back-up redundancy are critical. Also, the device

may be used in T1 applications (1.544Mbps) which do not

require meeting the DSX-1 cross connect pulse template.

Individual Channel Loss of Signal Detection, Local

and Remote Digital Loopback

Fifth Driver For Monitoring and Testing

Low Power, CMOS Technology

Over-temperature Protection

Multi-Line E1 Interface Cards

E1 Network Equipment

– Multiplexers

– Cross Connects

– Switching Systems

Fault Tolerant Systems

(510) 668-7000

Temperature Range

A separate loss of signal (LOS)

-40 C to +85 C

Operating

(510) 668-7017

XR-T5794

Quad E-1 Line

Interface Unit

June 1997-3

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