Overview
The CD74HCT245M is a high-speed CMOS logic octal bus transceiver produced by Harris Corporation. This device is designed to facilitate bidirectional data transfer between buses operating at different voltage levels, making it a versatile component in digital systems. The CD74HCT245M is particularly known for its compatibility with TTL inputs, high noise immunity, and low power consumption. It is widely used in applications requiring reliable and efficient data communication, such as industrial automation, automotive electronics, and consumer electronics.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage (VCC) | 4.5 to 5.5 | V | Operating range |
| Input Voltage (VIN) | 0 to VCC | V | Compatible with TTL levels |
| Output Voltage (VOUT) | 0 to VCC | V | |
| Operating Temperature | -55 to 125 | °C | Industrial range |
| Propagation Delay | 13 | ns | Typical at VCC = 5V |
| Quiescent Current | 4 | µA | Typical at VCC = 5V |
| Number of Channels | 8 | Octal transceiver | |
| Package | SOIC-20 | Surface mount |
Key Features
- Bidirectional Data Transfer: Facilitates seamless communication between buses.
- TTL Compatibility: Ensures interoperability with TTL logic levels.
- High Noise Immunity: Provides robust performance in noisy environments.
- Low Power Consumption: Ideal for battery-powered applications.
- Wide Operating Temperature Range: Suitable for industrial and automotive applications.
Applications
The CD74HCT245M is widely used in various industries due to its reliability and efficiency. In industrial automation, it is employed for data communication between control systems and peripherals. In automotive electronics, it ensures robust data transfer in vehicle control units. Additionally, it is used in consumer electronics for interfacing between different subsystems, such as microcontrollers and displays. Its versatility makes it a go-to solution for applications requiring bidirectional data transfer.
Q & A
1. What is the purpose of the CD74HCT245M?
The CD74HCT245M is an octal bus transceiver designed for bidirectional data transfer between buses operating at different voltage levels.
2. Is the CD74HCT245M compatible with TTL logic levels?
Yes, the CD74HCT245M is fully compatible with TTL logic levels, ensuring interoperability with TTL-based systems.
3. What is the operating voltage range of the CD74HCT245M?
The operating voltage range is 4.5V to 5.5V.
4. What is the typical propagation delay of the CD74HCT245M?
The typical propagation delay is 13ns at a supply voltage of 5V.
5. Can the CD74HCT245M operate in harsh environments?
Yes, it has an operating temperature range of -55°C to 125°C, making it suitable for industrial and automotive applications.
6. What package does the CD74HCT245M come in?
It is available in an SOIC-20 surface-mount package.
7. How many channels does the CD74HCT245M have?
It has 8 channels, making it an octal transceiver.
8. What is the quiescent current of the CD74HCT245M?
The typical quiescent current is 4µA at a supply voltage of 5V.
9. What are the key features of the CD74HCT245M?
Key features include bidirectional data transfer, TTL compatibility, high noise immunity, low power consumption, and a wide operating temperature range.
10. Where is the CD74HCT245M commonly used?
It is commonly used in industrial automation, automotive electronics, and consumer electronics for bidirectional data communication.
