MC74HC245ANG

Overview

The MC74HC245ANG is an octal bus transceiver manufactured by onsemi, belonging to the HC logic family. It features eight independent bidirectional data channels with non-inverting outputs and three-state capability. The device operates within a supply voltage range of 2.0 V to 6.0 V. It utilizes silicon gate CMOS technology for high-speed performance while maintaining low power consumption. The component includes an active-low output enable pin and a direction control pin to manage data flow between two buses.

Feature Summary

• Provides bidirectional asynchronous communication across eight data lines
• Features three-state outputs for effective bus isolation
• Compatible with LSTTL input levels for system interfacing
• Includes built-in electrostatic discharge protection mechanisms

Applications

• Data bus transmission and reception in computing systems
• Interfacing TTL or NMOS outputs to High Speed CMOS inputs
• Memory and memory mapping applications
• Industrial control systems requiring level shifting

Procurement Notes

Verify the specific suffix 'ANG' against the manufacturer's current datasheet to confirm package type and availability status. Ensure the order matches the exact logic family requirements. Check for any discontinued status notifications from onsemi before finalizing procurement plans.

Selection Notes

Select this component when an octal transceiver with HC speed and CMOS compatibility is required. It serves as a direct pin-compatible replacement for LS245 devices. Consider the operating voltage range and drive current capabilities relative to the connected loads. Verify that the package style meets the PCB layout constraints.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices produced by onsemi. The 74HC245 variant specifically provides octal bus driving capabilities. It is designed to replace older LS logic families while offering improved speed and lower power dissipation characteristics suitable for modern digital circuits.

Replacement Considerations

The MC74HC245A is functionally identical in pinout and may serve as a substitute. Other manufacturers produce equivalent parts under the 74HC245 designation. Verify electrical parameters such as propagation delay and output current before swapping suppliers.