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SN74ALS640BDWR

Octal Bus Transceivers

Packaging

Package | PIN: DW | 20
Temp: C (0 to 70)
Carrier: Cut Tape
Qty Price
1-9 $3.00
10-24 $2.70
25-99 $2.51
100-249 $2.20
250-499 $2.06
500-749 $1.75
750-999 $1.48
1000+ $1.41

Features

  • Bidirectional Bus Transceivers in High-Density 20-Pin Packages
  • Inverting Logic
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

 

Texas Instruments  SN74ALS640BDWR

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 can be used to disable the device so that the buses are effectively isolated.

The -1 version of the SN74ALS640B is identical to the standard version, except that the recommended maximum IOL for the -1 version is increased to 48 mA. There is no -1 version of the SN54ALS640B.

The SN54ALS640B and SN54AS640 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS640B and SN74AS640 are characterized for operation from 0°C to 70°C.