XR19L400_09 Datasheet, PDF (46/46 Pages) Exar Corporation – SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER

XR19L400
SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
REVISION HISTORY
REV. 1.0.3
DATE
April 2007
June 2007
July 2007
October 2007
December 2007
July 2009
REVISION
P1.0.0
P1.0.1
1.0.0
1.0.1
1.0.2
1.0.3
DESCRIPTION
Preliminary Datasheet
Updated pinout.
Final Datasheet. Updated DC Electrical characteristics.
Updated maximum crystal frequency and external clock frequency in AC Electri-
cal Characteristics.
Removed references to the special character detect since that feature is not
available in this device.
Clarified VCC33 and VCC50 pin descriptions.
NOTICE
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 2009 EXAR Corporation
Datasheet July 2009.
Send your UART technical inquiry with technical details to hotline: [e-mail].
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
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