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XR-T5683AIP Schematic ( PDF Datasheet ) - Exar Corporation

Teilenummer XR-T5683AIP
Beschreibung PCM Line Interface Chip
Hersteller Exar Corporation
Logo Exar Corporation Logo 




Gesamt 12 Seiten
XR-T5683AIP Datasheet, Funktion
...the analog plus companyTM
XR-T5683A
PCM Line
Interface Chip
FEATURES
D Single 5V Supply
D Receiver Input Can Be Either Balanced or
Unbalanced
D Up To 8.448Mbps Operation In Both Tx and Rx
Directions
D TTL Compatible Interface
June 1997-3
D Device Can Be Used as a Line Interface Unit With-
out Clock Recovery
APPLICATIONS
D T1, T2, E1 & E2 Rates, PCM Line Interface
D Network Multiplexing and Terminating Equipment
GENERAL DESCRIPTION
The XR-T5683A is a PCM line interface chip consisting of
both transmit and receive circuitry. This device is offered
in a plastic dual in-line (PDIP) or in a surface mount
package (SOIC). The maximum bit rate of the chip is
8.448Mbps, and the signal level to the receiver can be
attenuated by -10dB cable loss at one-half the bit rate. At
nominal supply voltage operation, the typical current
consumption is 40mA.
ORDERING INFORMATION
Part No.
XR-T5683AIP
XR-T5683AID
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
BLOCK DIAGRAM
RXDATA+ 2
RXDATA- 3
RVCC 9
RGND 7
TVCC 18
TPOS 17
TCLK 16
TNEG 12
TGND 14
Peak
Detector
BIAS
BIAS
1 PDC
Positive
Threshold
Comparator
Negative
Threshold
Comparator
Open Collector
Driver
Open Collector
Driver
Figure 1. Block Diagram
TTL Buffer
11 RPOS
TTL Buffer
TTL Buffer
8 RCLK
4 TE
10 RNEG
6 TANK BIAS
5 BIAS
13 TXDATA+
15 TXDATA-
Rev. 2.01
E1995
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017
1






XR-T5683AIP Datasheet, Funktion
XR-T5683A
RXDATA+
RCLK Output at Pin 8
RPOS Output at Pin 11
RNEG Output at Pin 10
Figure 3. Receiver Timing Diagram With 1-1-1-1-1-1 Pattern
TCLK Clock to Pin 16
TPOS to Pin 17
TNEG to Pin 12
Bipolar Signal at Transformer Output
Figure 4. Transmitter Input Timing Diagram
Rev. 2.01
6

6 Page









XR-T5683AIP pdf, datenblatt
XR-T5683A
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to im-
prove design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits de-
scribed herein, conveys no license under any patent or other right, and makes no representation that the circuits are
free of patent infringement. Charts and schedules contained herein are only for illustration purposes and may vary
depending upon a user’s specific application. While the information in this publication has been carefully checked;
no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or
malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly
affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation
receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the
user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circum-
stances.
Copyright 1995 EXAR Corporation
Datasheet June 1997
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
Rev. 2.01
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