Datasheet4U Logo Datasheet4U.com

HD74HC640 - Octal Bus Transceivers

Description

Each device has an active enable G and a direction control input, DIR.

when DIR is high, data flows from the A inputs to the B outputs.

When DIR is low, data flows from the B inputs to the A outputs.

Features

  • High Speed Operation: tpd = 12 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Control Inputs G L L H DIR L H X Operation HD74HC640 B data to A bus A data to B bus Isolation HD74HC643 B data to A bus A data to B bus Isolation HD74HC640/HD74HC643 Pin Arrangement HD74HC640 DIR A1 A2.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
HD74HC640 Octal Bus Transceivers Renesas
HD74HC643 Octal Bus Transceivers Renesas
HD74HC620 Octal Bus Transceivers Renesas
HD74HC623 Octal Bus Transceivers Renesas
HD74HC668 Synchronous UP/Down Decade Counter Renesas

Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HD74HC643 Octal Bus Transceivers
HD74HC646 Octal Bus Transceivers/Registers
HD74HC648 Octal Bus Transceivers/Registers
HD74HC620 Octal Bus Transceivers
HD74HC623 Octal Bus Transceivers

Full PDF Text Transcription

Click to expand full text
HD74HC640/HD74HC643 Octal Bus Transceivers (with 3-state outputs) Description Each device has an active enable G and a direction control input, DIR. when DIR is high, data flows from the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs. The HD74HC640 transfers inverted data from one bus to other and the HD74HC643 transfers inverted data from the A bus to the B bus and true data from the B bus to the A bus.
Published: |