REI Datasheet
SN55140, SN55141, SN55142A, SN55143A
SN75140, SN75141, SN75142A, SN75143A
Dual Line Receivers
Each of these devices consists of a dual single-ended line receiver with TTL-compatible strobes and
outputs. The reference voltage (switching threshold) is applied externally and can be adjusted from
1.5 volts to 3.5 volts, making it possible to optimize noise immunity for a given system design. A 2.5-
volt internal reference is available for use on the ‘142A and ‘143A. Due to their low input current (less
than 100 microamperes), they are ideally suited for party-line (bus-organized) systems.
The ‘140 has a common reference voltage pin and a common strobe. The ‘141 is the same as the
‘140 except that the input stage is diode protected. Each receiver of the ‘142A has an individual
reference voltage pin and an individual strobe. The ‘143A is the same as the ‘142A except that
the input stage is diode protected. The internal reference voltage of the ‘142A and ‘143A can be
externally adjusted with a single resistor from 1.5 volts to 3.5 volts.
Rochester Electronics
Manufactured Components
Rochester branded components are
manufactured using either die/wafers
purchased from the original suppliers
or Rochester wafers recreated from the
original IP. All recreations are done with
the approval of the OCM.
Parts are tested using original factory
test programs or Rochester developed
test solutions to guarantee product
meets or exceeds the OCM data sheet.
Quality Overview
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•
•
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ISO-9001
AS9120 certification
Qualified Manufacturers List (QML) MIL-PRF-38535
•
Class Q Military
•
Class V Space Level
Qualified Suppliers List of Distributors (QSLD)
•
Rochester is a critical supplier to DLA and
meets all industry and DLA standards.
Rochester Electronics, LLC is committed to supplying
products that satisfy customer expectations for
quality and are equal to those originally supplied by
industry manufacturers.
The original manufacturer’s datasheet accompanying this document reflects the performance
and specifications of the Rochester manufactured version of this device. Rochester Electronics
guarantees the performance of its semiconductor products to the original OEM specifications.
‘Typical’ values are for reference purposes only. Certain minimum or maximum ratings may be
based on product characterization, design, simulation, or sample testing.
© 2013 Rochester Electronics, LLC. All Rights Reserved 12202013
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