DS3487
www.ti.com SNLS355C – MAY 1998 – REVISED APRIL 2013 DS3487 Quad TRI-STATE Line Driver
Check for Samples: DS3487 FEATURES DESCRIPTION The DS3487 quad RS-422 driver features four
independent drivers which comply with EIA Standards
for the electrical characteristics of balanced voltage
digital interface circuits. The outputs are TRI-STATE
structures which are forced to a high impedance state
when the appropriate output control pin reaches a
logic zero condition. All input pins are PNP buffered
to minimize input loading for either logic one or logic
zero inputs. 1 2 Four Independent Drivers
TRI-STATE Outputs
Fast Propagation Times (typ 10 ns)
TTL Compatible
5V Supply
Output Rise and Fall Times Less than 15 ns
Pin Compatible with DS8924 and MC3487 Block and Connection Diagrams Figure 1. Block Diagram Figure 2. PDIP Package-Top View
See Package Number D0016A or NFG0016E Truth Table (1)
Input (1) Control Non-Inverting Inverting Input Output Output H H H L L H L H X L Z Z L = Low logic state
H = High logic state
X = Irrelevant
Z = TRI-STATE (high impedance) 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. …
