DS3486 Quad RS-422, RS-423 Line Receiver
April 2007
DS3486
Quad RS-422, RS-423 Line Receiver
General Description
National's quad RS-422, RS-423 receiver features four inde-
pendent receivers which comply with EIA Standards for the
electrical characteristics of balanced/unbalanced voltage dig-
ital interface circuits. Receiver outputs are 74LS compatible,
TRI-STATE
®
structures which are forced to a high impedance
state when the appropriate output control pin reaches a logic
zero condition. A PNP device buffers each output control pin
to assure minimum loading for either logic one or logic zero
inputs. In addition, each receiver has internal hysteresis cir-
cuitry to improve noise margin and discourage output insta-
bility for slowly changing input waveforms.
Features
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Four independent receivers
TRI-STATE outputs
Internal hysteresis −140 mV (typ)
Fast propagation times −19 ns (typ)
TTL compatible outputs
5V supply
Pin compatible and interchangeable with MC3486
Block and Connection Diagrams
Dual-In-Line Package
577902
577901
Top View
Order Number DS3486M or DS3486N
See NS Package Number M16A or N16E
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
© 2007 National Semiconductor Corporation
5779
www.national.com
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