Texas Instruments SN74LS640N
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.35 | $2.35 |
| 15+ | $2.27 | $34.05 |
| 25+ | $2.22 | $55.50 |
| 50+ | $2.10 | $105.00 |
| 100+ | $1.85 | $185.00 |
| N+ | $0.37 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74LS |
| Packaging | Tube | |
| 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 | 15mA, 24mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP |
| ROHS |  |
The SN74LS640N is an 8-bit inverting transceiver from Texas Instruments, part of the 74LS logic family. It features bidirectional data transfer with 3-State outputs, capable of sourcing 15mA and sinking 24mA. Operating from 4.75V to 5.25V, this IC is compatible with standard 5V TTL logic. Its 20-DIP package is ideal for through-hole PCB designs, providing robust mechanical mounting. Typical applications include bus interfacing, memory systems, and industrial control logic.
- Bidirectional 8-Bit Transfer: Enables efficient data flow in bus-oriented systems.
- 3-State Outputs: Allows bus isolation and multiplexing, preventing data contention.
- TTL-Compatible: Works seamlessly with standard 5V TTL logic families.
- Inverting Outputs: Provides logic inversion where needed, reducing external gate count.
Bidirectional Data Bus
Use the transceiver for bidirectional data transfer on an 8-bit bus, with direction controlled by the DIR pin.
Inverting Signal Buffering
Invert and buffer digital signals where logic inversion is required, such as in control signal generation.
Bus Isolation
Use the 3-State outputs to isolate the bus during read/write operations, preventing data contention.
TTL-to-TTL Interfacing
Interface different TTL logic families, ensuring reliable communication in legacy 5V systems.
Memory Address Decoding
Use the transceiver to buffer and invert address lines in memory systems, improving signal integrity.
Industrial Control Logic
Implement inverting logic functions in industrial controllers, where 5V TTL logic is still prevalent.
- Q: What is the logic family of the SN74LS640N?
- A: It belongs to the 74LS logic family, known for low power consumption and TTL compatibility.
- Q: What is the function of this IC?
- A: It is an inverting transceiver with 1 channel (8-bit), enabling bidirectional data transfer with inverted outputs.
- Q: What is the output type?
- A: The outputs are 3-State, allowing for bus isolation and multiplexing.
- Q: What is the supply voltage range?
- A: It operates from 4.75V to 5.25V, compatible with standard 5V TTL logic.
- Q: What is the maximum current?
- A: It can source 15mA and sink 24mA, suitable for driving TTL loads.
- Q: What package is available?
- A: It comes in a 20-DIP (0.300", 7.62mm) package, ideal for through-hole mounting.
SN74LS640N.pdf
- Q: What is the logic family of the SN74LS640N?
- A: It belongs to the 74LS logic family, known for low power consumption and TTL compatibility.
- Q: What is the function of this IC?
- A: It is an inverting transceiver with 1 channel (8-bit), enabling bidirectional data transfer with inverted outputs.
- Q: What is the output type?
- A: The outputs are 3-State, allowing for bus isolation and multiplexing.
- Q: What is the supply voltage range?
- A: It operates from 4.75V to 5.25V, compatible with standard 5V TTL logic.
- Q: What is the maximum current?
- A: It can source 15mA and sink 24mA, suitable for driving TTL loads.
- Q: What package is available?
- A: It comes in a 20-DIP (0.300", 7.62mm) package, ideal for through-hole mounting.
