74FCT373PC

Latches Overview

The National Semiconductor 74FCT373PC is an octal transparent latch featuring three-state outputs, designed for bus-organized system applications. It operates within a voltage range of 4.5V to 5.5V and utilizes the FCT logic series. The device provides eight latches in a single package with true output polarity. It supports a maximum load capacitance of 50 pF and offers a maximum output sink current of 48 mA. The component is housed in a 20-pin DIP package and functions as a unidirectional bus driver.

Latches Feature Summary

• Octal transparent latch configuration with independent control gates
• Three-state outputs for efficient bus interfacing
• Glitch-free operation during power-up and power-down cycles
• High noise immunity compatible with CMOS and TTL systems

Latches Applications

• Bus organized system data storage
• Interfacing between microprocessors and memory devices
• Register applications requiring high impedance states
• Data buffering in digital communication circuits

Latches Procurement Notes

Verify that the specific part number matches the original manufacturer specifications, as National Semiconductor assets have transitioned through various corporate entities. Confirm the package type and pinout compatibility with existing board layouts. Check for RoHS compliance status if environmental regulations apply to the end product. Ensure the supply source provides authentic components to avoid counterfeit risks associated with legacy logic families.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for bus architectures. Consider the FCT series characteristics for improved switching speeds compared to standard TTL. Evaluate the 20-pin DIP package constraints against available PCB space. Compare performance metrics such as propagation delay and drive capability against alternative logic families like 74ACT or 74HC for specific timing requirements.

Latches Part Context

The 74FCT373 belongs to the Fast CMOS (FCT) logic family, which bridges the performance gap between standard TTL and CMOS technologies. This series is characterized by low power consumption and high-speed operation. The 74FCT373 specifically addresses the need for reliable data latching in complex digital systems where bus contention must be managed effectively through tri-state control mechanisms.

Latches Replacement Considerations

Compatible substitutes include the 74FCT373TQ from Renesas and the P74FCT373TP from Pyramid Semiconductor. Verify pin compatibility and electrical parameters before substitution. Note that some alternatives may differ in package style or operating temperature ranges.