Order this document by MC3487/D
Quad Line Driver with Three-State Outputs
Motorolais Quad EIA–422 Driver features four ...
Order this document by MC3487/D
Quad Line Driver with Three-State Outputs
Motorolais Quad EIA–422 Driver features four independent driver chains which comply with EIA Standards for the Electrical Characteristics of Balanced
Voltage Digital Interface Circuits. The outputs are three–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. In addition, internal circuitry assures a high impedance output state during the transition between power up and power down. A summary of MC3487 features include: Four Independent Driver Chains
MC3487
QUAD EIA–422 LINE DRIVER WITH THREE–STATE OUTPUTS
SEMICONDUCTOR TECHNICAL DATA
Three–State Outputs PNP High Impedance Inputs (PIA Compatible) Fast Propagation Times (Typical 15 ns) TTL Compatible Single 5.0 V Supply
Voltage Output Rise and Fall Times Less Than 20 ns DS 3487 Provides Second Source
P SUFFIX PLASTIC PACKAGE CASE 648 D SUFFIX PLASTIC PACKAGE CASE 751B (SO–16)
Driver Block Diagram
PIN CONNECTIONS
Non–Inverting Input A 1 2 3 A/B Control 4 5 Outputs B 6 Input B 7 Gnd 8 Outputs A 16 15 14 13 12 11 10 9 VCC Input D Outputs D C/D Control Outputs C Input C
Input
Outputs
Inverting
Output Control
TRUTH TABLE
Input H L X
L H X Z = = = =
Control Input H H L
Non–Inverting Output H L Z
Inverting Output L H Z Device
ORDERING INFORMATION
Operat...