74HC245PW,112

The 74HC245PW,112 is a high-speed CMOS octal bus transceiver designed by Nexperia. It is part of the 74HC family of logic devices, which are known for their high-speed performance and low power consumption. Here’s a detailed description of its features and specifications:

General Description:

The 74HC245 is an octal transceiver that allows for bidirectional data transfer between two buses. It is particularly useful in applications where data needs to be transmitted in both directions, such as in microprocessor and microcontroller interfacing. The device can operate in a variety of logic levels, making it versatile for different digital systems.

Key Features:

• Bus Transceiver: The device can transmit data in both directions, making it suitable for applications requiring bidirectional communication.
• High-Speed Operation: The 74HC245 operates at high speeds, with a maximum propagation delay of around 15 ns at 5V, allowing for fast data transfer.
• Wide Supply Voltage Range: It operates with a supply voltage range of 2V to 6V, making it compatible with various logic levels.
• Low Power Consumption: The device is designed to consume minimal power, which is essential for battery-operated devices.
• Tri-State Outputs: The outputs can be placed in a high-impedance state, allowing multiple devices to share the same bus without interference.
• Input/Output Compatibility: The device is compatible with TTL (Transistor-Transistor Logic) levels, making it suitable for interfacing with other logic families.

Pin Configuration:

The 74HC245PW,112 comes in a 20-pin TSSOP (Thin Shrink Small Outline Package) package. The pins are arranged as follows:

• A1 to A8: Data inputs for bus A.
• B1 to B8: Data outputs for bus B.
• DIR: Direction control pin that determines the direction of data flow (A to B or B to A).
• OE: Output enable pin that controls the activation of the outputs.
• GND: Ground connection.
• VCC: Power supply connection.

Electrical Characteristics:

• Input Voltage Levels: The input high voltage (VIH) is typically around 2V to 6V, while the input low voltage (VIL) is typically 0V to 0.8V.
• Output Voltage Levels: The output high voltage (VOH) is close to VCC, and the output low voltage (VOL) is close to GND.
• Maximum Output Current: The device can source or sink a maximum of 25 mA per output.

Applications:

The 74HC245 is widely used in various applications, including:

• Data bus buffering and isolation.
• Microprocessor and microcontroller interfacing.
• Communication between different logic families.
• Peripheral device interfacing in digital systems.

Conclusion:

The 74HC245PW,112 from Nexperia is a robust and versatile octal bus transceiver that provides high-speed, low-power data transfer capabilities. Its bidirectional communication, tri-state outputs, and compatibility with various logic levels make it an essential component in modern digital electronics.