74HC245D,653

The 74HC245D,653 is a high-speed CMOS octal bus transceiver designed for bidirectional data communication between two buses. Manufactured by Nexperia, this device is part of the 74HC family, which is known for its high-speed performance and low power consumption.

Key Features:

1. Bus Transceiver: The 74HC245D is designed to facilitate data transfer between two separate buses, making it ideal for applications where data needs to be sent and received in both directions.

2. Octal Configuration: The device contains eight data lines, allowing it to handle 8-bit data simultaneously. This makes it suitable for applications requiring parallel data transfer.

3. Direction Control: The transceiver includes a direction control pin (DIR) that determines the direction of data flow. When DIR is high, data flows from the A bus to the B bus; when DIR is low, data flows from the B bus to the A bus.

4. Enable Control: The device features an enable pin (OE) that allows the user to control the output drivers. When OE is low, the outputs are enabled, allowing data to pass through. When OE is high, the outputs are in a high-impedance state, effectively disconnecting the transceiver from the bus.

5. High-Speed Operation: The 74HC245D operates at high speeds, with a maximum propagation delay of around 15 ns at a supply voltage of 5V, making it suitable for fast data communication applications.

6. Voltage Range: The device operates over a wide supply voltage range, typically from 2V to 6V, making it compatible with various logic levels.

7. Low Power Consumption: As a CMOS device, the 74HC245D exhibits low static power consumption, which is beneficial for battery-operated devices and energy-efficient designs.

8. Package Type: The "D" in the part number indicates that the device is available in a DIP (Dual In-line Package) form factor, which is suitable for through-hole mounting. The package typically has 20 pins.

9. Temperature Range: The device is designed to operate within a standard temperature range, making it suitable for a variety of industrial and consumer applications.

Applications:

The 74HC245D,653 is commonly used in applications such as:

• Data bus buffering and isolation
• Microcontroller interfacing
• Communication between different logic families
• Memory address and data bus transceivers
• General-purpose data transfer in digital circuits

Conclusion:

The 74HC245D,653 from Nexperia is a versatile and efficient octal bus transceiver that provides reliable bidirectional data communication. Its combination of high-speed operation, low power consumption, and ease of use makes it a popular choice for engineers and designers working on digital communication systems.