Datasheet Details
| Part number | SN74ALS639A |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 638.95 KB |
| Description | OCTAL BUS TRANSCEIVERS |
| Datasheet | SN74ALS639A SN74AS638A Datasheet (PDF) |
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Overview: SN74ALS638A, SN74ALS639A, SN74AS638A, SN74AS639 OCTAL BUS TRANSCEIVERS • Bidirectional Bus Transceivers in High-Density 20-Pin Packages • Choice of True or Inverting Logic • A-Bus Outputs Are Open Collector; B-Bus.
This datasheet includes multiple variants, all published together in a single manufacturer document.
| Part number | SN74ALS639A |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 638.95 KB |
| Description | OCTAL BUS TRANSCEIVERS |
| Datasheet | SN74ALS639A SN74AS638A Datasheet (PDF) |
|
|
|
These octal bus transceivers are designed for asynchronous two-way munication between open-collector and 3-state buses.
The devices transmit data from the A bus (open-collector) to the B bus (3 state) or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input.
The output-enable (OE) input can be used to disable the device so the buses are isolated.
| Part Number | Description |
|---|---|
| SN74ALS638A | OCTAL BUS TRANSCEIVERS |
| SN74ALS620A | OCTAL BUS TRANSCEIVERS |
| SN74ALS621A | OCTAL BUS TRANSCEIVERS |
| SN74ALS623A | OCTAL BUS TRANSCEIVERS |
| SN74ALS640B | OCTAL BUS TRANSCEIVERS |
| SN74ALS641A | OCTAL BUS TRANSCEIVERS |
| SN74ALS642A | OCTAL BUS TRANSCEIVERS |
| SN74ALS645A | Octal Bus Transceivers |
| SN74ALS646A | OCTAL BUS TRANSCEIVERS AND REGISTERS |
| SN74ALS648A | OCTAL BUS TRANSCEIVERS AND REGISTERS |