MC74HC640ADT

Overview

The MC74HC640ADT is an inverting transceiver manufactured by onsemi, featuring one element with eight bits per element and three-state output capability. It operates within a supply voltage range of 2.0 V to 6.0 V. The device supports surface-mount installation in a 20-SSOP package. It functions as a bidirectional data bus interface, providing low input capacitance and high noise immunity suitable for CMOS and NMOS applications.

Feature Summary

• Bidirectional data bus interface functionality
• Three-state output capability for bus line isolation
• Low input capacitance for high-speed operation

Applications

• Memory mapping control circuits
• Clock drivers
• Bus-oriented architectures

Procurement Notes

Verify the specific suffix 'DT' corresponds to the 20-SSOP package and tape-and-reel orientation required for your assembly process. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure static-sensitive handling protocols are followed during storage and installation.

Selection Notes

Select this component when an inverting, bidirectional transceiver with three-state outputs is required for 8-bit wide buses. Consider the HC logic family for compatibility with standard CMOS voltages. Evaluate package constraints against available PCB real estate for the SSOP form factor.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It serves as a buffer and driver within the broader category of logic integrated circuits. The device facilitates signal transmission between different logic families or bus structures while maintaining signal integrity.

Replacement Considerations

Check for direct pin-compatible alternatives from other manufacturers that match the HC logic family specifications. Verify equivalent electrical characteristics such as propagation delay and output drive current before substitution.