XRT59L921IB Exar Corporation, XRT59L921IB Datasheet - Page 32

• Manufacturer Part Number: XRT59L921IB
• Description: 21 CHANNEL E1 LIU
• Manufacturer: Exar Corporation

Specifications of XRT59L921IB

• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

REVISION HISTORY
XRT59L921
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to
improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any
circuits described 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 here in 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 circumstances.
Copyright 2007 EXAR Corporation
Datasheet March 2007.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
R
EVISION
P1.0.0
P1.0.1
1.0.0
1.1.0
1.2.0
1.2.1
#
09/01/04
10/28/04
06/23/05
09/07/05
03/07/07
03/12/07
D
ATE
1st release of the XRT59L921 preliminary data sheet.
CCorrected receive transformer turns ratio from 1:2 to 1:1. Added package outline
drawing and pin numbers. Other minor edits
Replaced power supply current TBD’s with actual. Release to production
Added comment to TxCLK pin description, added note to TxNEG pin description[,
deleted "with -18db------" comment from electrical receiver sensitivity, minor edit to
sect.1.2 and added sect. 1.2.2.
Added A2O, Y2, Y20 pins to positive supply. Added pins F1, F20, J1, J20, M1, M20,
R1, R20 to digital ground. Added pins H16, P5, P16, P17 to AGND description.Added
pin D15 to NC
Added pin V1 DGND in pin list.
NOTICE
30
D
ESCRIPTION
REV. 1.2.1