CD74HCT648EN

Overview

The CD74HCT648EN is an 8-bit non-inverting bus transceiver from the HCT series, manufactured by Harris Corporation. It operates on a single supply voltage of 5V with a range of 4.5V to 5.5V. The device features three-state outputs and supports bidirectional data flow. It is housed in a 24-pin DIP package and is designed for operation across a temperature range of -55°C to 125°C.

Feature Summary

• Non-inverting 8-bit bus transceiver functionality
• Bidirectional data transfer capability
• Three-state output control

Applications

• Memory buffer applications
• Clock drivers
• Bus-oriented communications

Procurement Notes

Verify the manufacturer origin, as Harris Corporation assets were acquired by Texas Instruments. Confirm the specific package type (24-DIP) and ensure the component meets the required military-grade temperature specifications if applicable. Check for RoHS compliance status as historical Harris parts may not adhere to current environmental directives.

Selection Notes

Select this component when a non-inverting, 8-bit bidirectional interface is required within the HCT logic family. Ensure the system voltage aligns with the 5V nominal requirement. Consider the 24-DIP package constraints for PCB layout and verify that the high-temperature rating suits the operational environment.

Part Context

This part belongs to the CD74HCTxxyy series, which provides CMOS performance with TTL-compatible inputs. The HCT series is designed to interface directly with TTL logic levels while offering the low power consumption typical of CMOS technology. Harris Corporation was a primary producer before industry consolidation.

Replacement Considerations

Texas Instruments offers equivalent parts such as the SN74HCT648N. Verify pin compatibility and electrical characteristics against the original datasheet before substitution.