Catalog(1 parts)
| Part | Package / Case | Package / Case▲▼ | Package / Case▲▼ | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Supplier Device Package | Number of Bits per Element▲▼ | Output Type | Current - Output High, Low▲▼ | Current - Output High, Low | Current - Output High, Low▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Mounting Type | Number of Elements▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments SN74ALS639ANTransceiver, Non-Inverting 1 Element 8 Bit per Element Open Collector, Push-Pull Output 20-PDIP | 20-DIP | 0.007619999814778566 m | 0.007619999814778566 m | 5.5 V | 4.5 V | 20-PDIP | 8 ul | Open Collector, Push-Pull | 0.024000000208616257 A | - | 0.014999999664723871 A | 70 °C | 0 °C | Through Hole | 1 ul |
Key Features
• Bidirectional Bus Transceivers in High-Density 20-Pin PackagesChoice of True or Inverting LogicA-Bus Outputs Are Open Collector; B-Bus Outputs Are 3 StatePackage Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPsBidirectional Bus Transceivers in High-Density 20-Pin PackagesChoice of True or Inverting LogicA-Bus Outputs Are Open Collector; B-Bus Outputs Are 3 StatePackage Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs
Description
AI
These octal bus transceivers are designed for asynchronous two-way communication 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 () input can be used to disable the device so the buses are isolated.
The -1 version of SN74ALS638A is identical to the standard version, except that the recommended maximum IOLis increased to 48 mA.
The SN74ALS638A, SN74ALS639A, SN74AS638A, and SN74AS639 are characterized for operation from 0°C to 70°C.
These octal bus transceivers are designed for asynchronous two-way communication 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 () input can be used to disable the device so the buses are isolated.
The -1 version of SN74ALS638A is identical to the standard version, except that the recommended maximum IOLis increased to 48 mA.
The SN74ALS638A, SN74ALS639A, SN74AS638A, and SN74AS639 are characterized for operation from 0°C to 70°C.