74AC373TTR

Latches Overview

The STM32 74AC373TTR is an octal D-type latch with three-state outputs, fabricated using sub-micron silicon gate and double-layer metal wiring C2MOS technology. It operates within a supply voltage range of 2V to 6V. The device features high-speed performance with typical propagation delays of 5ns at VCC = 5V. It provides symmetrical output impedance with minimum drive currents of 24mA for both high and low states. Quiescent supply current is limited to a maximum of 4μA at 25°C. The component includes protection circuits against static discharge, offering 2kV ESD immunity.

Latches Feature Summary

• Octal D-type latch architecture with transparent data flow when Latch Enable is HIGH
• Three-state outputs controlled by active LOW Output Enable input
• High noise immunity with input thresholds defined as percentages of VCC
• Capable of driving 50Ω transmission lines

Latches Applications

• Bus-organized system applications requiring data latching
• Interface between High Speed CMOS systems and TTL or NMOS components
• General-purpose digital logic buffering and storage

Latches Procurement Notes

Verify the specific ordering code 74AC373TTR corresponds to the TSSOP package variant. Confirm that the requested quantity matches standard tube or tape-and-reel availability if applicable. Ensure the operating environment stays within the specified temperature range of -55°C to 125°C. Check for RoHS compliance status as per the latest manufacturer documentation. Validate pin compatibility with existing PCB footprints before finalizing procurement.

Latches Selection Notes

Select this component for designs requiring octal latching with tri-state bus capabilities. It is suitable for systems needing direct interfacing with TTL and NMOS logic families. Consider the 2V to 6V operating voltage range for power supply flexibility. The low quiescent current makes it appropriate for power-sensitive applications. Ensure the layout supports the required 50Ω transmission line driving capability if used in high-speed signal paths.

Latches Part Context

The 74AC373 belongs to the AC series of octal latches, representing an evolution from earlier 74LS or 74HC counterparts with improved speed and lower power consumption. The 'TTR' suffix specifically denotes the Tape & Reel packaging format in the TSSOP-20 housing. This family is designed for general-purpose digital applications where data retention and bus isolation are critical requirements.

Latches Replacement Considerations

Direct functional replacements include other 74AC373 variants from different manufacturers such as ON Semiconductor or Texas Instruments, provided they maintain pinout and electrical specification compatibility. Verify that any substitute also offers the TSSOP-20 package and meets the 2V-6V operating voltage range.