
Deep-Dive with AI
Search across all available documentation for this part.

Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | 8416101RA |
|---|---|
| null | |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Bulk | 17 | $ 18.40 | |
| Texas Instruments | TUBE | 1 | $ 24.31 | |
| 100 | $ 21.23 | |||
| 250 | $ 16.37 | |||
| 1000 | $ 14.64 | |||
Description
General part information
SN54LS640 Series
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The 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 enable input (G) can be used to disable the device so the buses are effectively isolated.
The -1 versions of the SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are identical to the standard versions except that the recommended maximum IOLis increased to 48 milliamperes. There are no -1 versions of the SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645.
The SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645 are characterized for operation over the full military tempearture range of –55°C to 125°C. The SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are characterized for operation from 0°C to 70°C.
Documents
Technical documentation and resources