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General-purpose transceivers

SN74ALS642A-1

ACTIVE

OCTAL BUS TRANSCEIVER O.C.

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Data sheet

SN74ALS642A-1

ACTIVE
Data sheet Order now

Product details

Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Number of channels 8 IOL (max) (mA) 48 IOH (max) (mA) 0.1 Input type TTL Output type TTL Features High speed (tpd 10-50ns), Over-voltage tolerant inputs Technology family ALS Rating Catalog Operating temperature range (°C) 0 to 70
Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Number of channels 8 IOL (max) (mA) 48 IOH (max) (mA) 0.1 Input type TTL Output type TTL Features High speed (tpd 10-50ns), Over-voltage tolerant inputs Technology family ALS Rating Catalog Operating temperature range (°C) 0 to 70
PDIP (N) 20 228.702 mm² 24.33 x 9.4 SOIC (DW) 20 131.84 mm² 12.8 x 10.3 SOP (NS) 20 98.28 mm² 12.6 x 7.8
  • 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

 

 
  • 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

 

 

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.

 

 

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.

 

 
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* Data sheet Octal Bus Transceivers With Open-Collector Outputs datasheet 01 Mar 1995

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