SN74ALS642A-1 OCTAL BUS TRANSCEIVER O.C. | TI.com

SN74ALS642A-1
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OCTAL BUS TRANSCEIVER O.C.

OCTAL BUS TRANSCEIVER O.C. - SN74ALS642A-1
Datasheet
 

Description

These octal bus transceivers are designed for asynchronous two-way communication between

data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable input disables the device so that the buses are effectively isolated.

The -1 versions of the SN74ALS641A and SN74ALS642A are identical to the standard versions, except that the recommended maximum IOL is increased to 48 mA in the -1 versions.

The SN74ALS641A, SN74ALS642A, and SN74AS641 are characterized for operation from 0°C to 70°C.

 

 

Features

  • Bidirectional Bus Transceivers in High-Density 20-Pin Packages
  • Choice of True or Inverting Logic
  • Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs

 

 

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Rating Operating temperature range (C)
SN74ALS642A-1 Order now ALS     4.75     5.25     8     5     75     28     30     48     0     Catalog     0 to 70