Overview
The SN74LS640N3 is an octal bus transceiver manufactured by Texas Instruments, designed for bidirectional data transfer between buses. This component is part of the LS series, known for its low power consumption and high-speed operation. It is primarily targeted at applications requiring efficient data communication in digital systems, such as industrial control, computing, and telecommunications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Function | Octal Bus Transceiver | - | Bidirectional data transfer |
| Logic Family | LS | - | Low power Schottky |
| Input Level | TTL | - | Transistor-Transistor Logic |
| Output Level | TTL | - | Transistor-Transistor Logic |
| Output Type | 3-State/Open Collector | - | Supports high-impedance state |
| High-Level Output Current | -15 | mA | Maximum current |
| Low-Level Output Current | 24 | mA | Maximum current |
| Propagation Delay Time | 15 | ns | Typical value |
| Supply Voltage (Max) | 5.25 | V | Upper limit |
| Supply Voltage (Min) | 4.75 | V | Lower limit |
| Operating Temperature (Max) | 70 | °C | Upper limit |
| Operating Temperature (Min) | 0 | °C | Lower limit |
| Package | PDIP-20 | - | Plastic Dual In-Line Package |
| Channels | 8 | - | Number of data lines |
| Polarity | Inverting | - | Output logic inverted |
Key Features
- Bidirectional data transfer capability for efficient communication between buses.
- 3-State outputs allow multiple devices to share a common bus without interference.
- Low power consumption due to the LS logic family, making it suitable for power-sensitive applications.
- High-speed operation with a typical propagation delay of 15 ns, ensuring quick data transfer.
- Robust design with TTL-compatible input and output levels, ensuring compatibility with a wide range of digital systems.
Applications
The SN74LS640N3 is widely used in various digital systems, including industrial automation, computing, and telecommunications. In industrial automation, it facilitates data transfer between control units and sensors. In computing, it enables communication between processors and memory modules. In telecommunications, it supports data routing in networking equipment. Its reliability and efficiency make it a preferred choice for applications requiring high-speed and low-power data communication.
Q & A
1. What is the primary function of the SN74LS640N3?
The SN74LS640N3 is an octal bus transceiver designed for bidirectional data transfer between buses in digital systems.
2. What logic family does the SN74LS640N3 belong to?
It belongs to the LS (Low Power Schottky) logic family, known for its low power consumption and high-speed operation.
3. What are the input and output levels of the SN74LS640N3?
Both input and output levels are TTL (Transistor-Transistor Logic) compatible.
4. What is the typical propagation delay of the SN74LS640N3?
The typical propagation delay is 15 ns, ensuring quick data transfer.
5. What is the operating temperature range of the SN74LS640N3?
The operating temperature range is from 0°C to 70°C.
6. What package type is used for the SN74LS640N3?
It is available in a PDIP-20 (Plastic Dual In-Line Package) format.
7. How many channels does the SN74LS640N3 support?
It supports 8 channels, enabling data transfer across multiple lines.
8. What is the output type of the SN74LS640N3?
The output type is 3-State/Open Collector, allowing multiple devices to share a common bus.
9. What are the supply voltage limits for the SN74LS640N3?
The supply voltage ranges from 4.75 V to 5.25 V.
10. In which applications is the SN74LS640N3 commonly used?
It is commonly used in industrial automation, computing, and telecommunications for efficient data communication.
