XRT8001(1999) View Datasheet(PDF) - Exar Corporation

Part Name

Description

Manufacturer

XRT8001
(Rev.:1999)

XRT8001 WAN Clock

Exar Corporation 

Preliminary

XRT8001

XRT8001 WAN Clock

August 1999-3

FEATURES

• Programmable Output Frequencies

• Generates Output Clock Frequencies Ranging

From 56kHz Up to 16.384MHz

• Low Power Operation (3.3V and 5V)

• Lock Detect Indication Pin

• Cascadable

• No External Components Needed

• Pin Compatible with the XRT8000 Device

• Operates Over the Industrial Temperature

Range

• Available in an 18-Pin PDIP or SOIC Package

APPLICATIONS

• DSU’s, CSU’s and Access Equipment

• ISDN Terminals

• Concentrators and Multiplexers

GENERAL DESCRIPTION

The XRT8001 WAN Clock IC is a dual-phase-locked loop chip that generates two very low jitter output clock

signals that can be used for synchronization applications in wide area networking systems.

The XRT8001 WAN Clock device can be configured to operate in one of six modes:

1. The Forward/Master Mode

2. The Reverse/Master Mode

3. The “Fractional T1/E1" Reverse/Master Mode

4. The “E1 to T1 - Forward/Master" Mode

5. The “High Speed - Reverse" Mode

6. The “Slave” Mode

These modes are briefly discussed on pages 8 - 14.

ORDERING INFORMATION

Part Number

XRT8001IP

XRT8001ID

Package

18-Lead 300 Mil PDIP

18-Lead 300 Mil JEDEC SOIC

Operating Temperature Range

-40°C to +85°C

-40°C to +85°C

Rev. P1.00

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

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