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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74ABT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Transceiver, Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 32mA, 64mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) |
| Supplier Device Package | 20-SSOP |
The SN74ABT640DB is an 8-bit inverting transceiver from Texas Instruments, part of the 74ABT family. It operates from a 4.5V to 5.5V supply and provides 32mA source and 64mA sink drive capability. The 3-state outputs and direction control allow for bidirectional data flow on a 5V bus. Housed in a 20-SSOP package, this transceiver is ideal for applications requiring signal inversion and high drive strength, such as industrial control, memory interfacing, and telecommunications.
- Inverting Functionality: Combines signal inversion and buffering in a single IC, reducing component count and simplifying design.
- High Drive Current (32mA/64mA): Ensures reliable signal integrity when driving heavy loads and long traces in 5V systems.
- Bidirectional Data Flow: Supports data transfer in both directions, making it versatile for bus-oriented applications.
- 5V Operation (4.5V to 5.5V): Compatible with standard 5V logic systems, ensuring easy integration into existing designs.
Inverting Bus Transceivers
The SN74ABT640DB provides 8-bit bidirectional data transfer with signal inversion. This is useful in systems where an inverted logic level is required, such as in certain memory interfaces or control logic.
5V Bidirectional Data Buses
It is designed for 5V systems, allowing data to flow in both directions between two buses. The direction control (DIR) and output enable (OE) pins provide flexible bus management.
Signal Inversion and Buffering
In addition to transceiving, it can be used as an inverting buffer to drive high-capacitance loads while also inverting the signal, combining two functions in one device.
Industrial Control Logic
In industrial controllers, this transceiver can interface between a 5V CPU and I/O modules, providing both signal inversion and the high drive current needed for noisy environments.
Memory Interface Circuits
It can be used in memory systems where inverted data or address signals are required, ensuring proper data latching and reducing the need for additional inverter ICs.
Telecommunications Switching
In telecom equipment, this device can manage bidirectional data flow on a 5V backplane, with the inverting feature providing additional design flexibility.
- Q: What is the logic family of the SN74ABT640DB?
- A: It belongs to the 74ABT (Advanced BiCMOS Technology) logic family.
- Q: What is the function of this IC?
- A: It is an 8-bit (1-channel) inverting transceiver with 3-state outputs.
- Q: How many channels does it have?
- A: It has 1 channel, handling 8 bits of data.
- Q: What is the output type?
- A: The outputs are 3-State, enabling bidirectional bus communication.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, suitable for 5V systems.
- Q: What is the output current capability?
- A: It can sink 64mA and source 32mA, providing high drive strength.
SN74ABT640DB.pdf
- Q: What is the logic family of the SN74ABT640DB?
- A: It belongs to the 74ABT (Advanced BiCMOS Technology) logic family.
- Q: What is the function of this IC?
- A: It is an 8-bit (1-channel) inverting transceiver with 3-state outputs.
- Q: How many channels does it have?
- A: It has 1 channel, handling 8 bits of data.
- Q: What is the output type?
- A: The outputs are 3-State, enabling bidirectional bus communication.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, suitable for 5V systems.
- Q: What is the output current capability?
- A: It can sink 64mA and source 32mA, providing high drive strength.