Texas Instruments SN74LS640-1N
| 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 | Marketplace | 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, 48mA |
| 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 SN74LS640-1N is a low-power Schottky inverting transceiver from Texas Instruments, designed for 5V TTL systems. It features a single channel with 3-state output, capable of sourcing 15mA and sinking 48mA. Operating from 4.75V to 5.25V, it is ideal for legacy bus interfacing, motor control, and data acquisition. The 20-DIP package is easy to handle and breadboard-friendly.
- Inverting Output: Provides active-low logic signals, simplifying interface with certain peripherals.
- High Sink Current (48mA): Drives relays, LEDs, and other high-current loads directly.
- 3-State Output: Enables bus sharing in multi-device systems.
- DIP Package: Ideal for prototyping and through-hole PCB designs.
Legacy TTL Bus Systems
In retro computing and industrial equipment, this transceiver provides inverting bus interfacing for 5V TTL backplanes, ensuring compatibility with existing designs.
Data Acquisition Systems
It buffers and inverts digital signals from sensors and ADCs, allowing for active-low logic interfacing in measurement systems.
Motor Control Logic
In industrial motor drives, it interfaces between the control logic and power stage, providing inverted drive signals for H-bridge circuits.
Memory Read/Write Buffering
It buffers address and data lines in older memory systems, with 3-state outputs allowing multiple memory banks to share a common bus.
Telecommunication Line Cards
In legacy telecom equipment, it provides signal inversion and buffering for control and status lines between line interface units and the main controller.
Test Fixtures and Burn-in Boards
Its DIP package and robust drive capability make it ideal for use in test fixtures, providing reliable signal conditioning for device-under-test validation.
- Q: What logic family does the SN74LS640-1N belong to?
- A: It belongs to the 74LS family, a low-power Schottky TTL logic series.
- Q: What is the function of this IC?
- A: It is an inverting transceiver with a single channel and 3-state output.
- Q: What is the operating voltage range?
- A: It operates from 4.75V to 5.25V, standard for TTL logic.
- Q: What is the output current capability?
- A: It can source 15mA and sink 48mA.
- Q: What package is available?
- A: It comes in a 20-DIP package with a 7.62mm width.
- Q: What is the temperature range?
- A: It operates from 0°C to 70°C, suitable for commercial applications.
SN74LS640-1N.pdf
- Q: What logic family does the SN74LS640-1N belong to?
- A: It belongs to the 74LS family, a low-power Schottky TTL logic series.
- Q: What is the function of this IC?
- A: It is an inverting transceiver with a single channel and 3-state output.
- Q: What is the operating voltage range?
- A: It operates from 4.75V to 5.25V, standard for TTL logic.
- Q: What is the output current capability?
- A: It can source 15mA and sink 48mA.
- Q: What package is available?
- A: It comes in a 20-DIP package with a 7.62mm width.
- Q: What is the temperature range?
- A: It operates from 0°C to 70°C, suitable for commercial applications.
