CD74FCT843CTQM

Latches Overview

The CD74FCT843CTQM is an octal D-type transparent latch manufactured by Harris Corporation, belonging to the FCT logic series. It features a single circuit with nine input and nine output lines, housed in a 24-QSOP surface-mount package. The device operates on a supply voltage range of 4.5V to 5.5V and supports tri-state outputs. It is designed for high-speed applications with a propagation delay of 13ns at 5V. The component functions as a non-inverting buffer and is rated for an operating temperature range of -40°C to 85°C.

Latches Feature Summary

• Octal D-type transparent latch architecture providing data storage capabilities
• Tri-state output configuration enabling bus-driven applications
• FAST CMOS technology ensuring high-speed signal processing

Latches Applications

• High-speed bus interface systems
• Data buffering in digital circuits
• Memory address latching applications

Latches Procurement Notes

Verify the manufacturer designation carefully, as Harris Corporation's semiconductor assets were acquired by Texas Instruments. Confirm that the specific QSOP package variant matches your PCB footprint requirements. Ensure compatibility with the specified 4.5V to 5.5V supply voltage range for your target system design.

Latches Selection Notes

Select this component when an octal latch with tri-state outputs is required for bus interfacing. The FAST CMOS technology offers a balance between speed and power consumption suitable for mid-range digital systems. Verify that the 24-QSOP package dimensions align with your assembly constraints and thermal management needs.

Latches Part Context

This part belongs to the FCT (Fast CMOS) family, which bridges the performance gap between standard TTL and advanced CMOS technologies. The CD74 prefix indicates commercial grade temperature ratings, while the HCT suffix typically denotes High-Speed CMOS compatibility, though FCT variants have specific electrical characteristics tailored for bus interfaces.

Latches Replacement Considerations

Check for equivalents from Texas Instruments, such as the SN74FCT843 series, due to the acquisition of Harris Semiconductor assets. Ensure any substitute maintains the same 24-QSOP package and 9:9 circuit configuration.