74LCX373TTR

Latches Overview

The STMicroelectronics 74LCX373TTR is an octal D-type latch with non-inverting, three-state outputs. It utilizes low-voltage CMOS technology for high-speed operation and low power consumption. The device features 5V tolerant inputs and outputs, allowing interfacing with 5V signal environments while operating at 2.0V to 3.6V. Key electrical parameters include a maximum propagation delay of 8.0 ns at VCC = 3V, symmetrical output impedance with |IOH| = IOL = 24 mA (min) at VCC = 3V, and ESD immunity exceeding 2000V HBM.

Latches Feature Summary

• Features 5V tolerant inputs and outputs for direct interfacing with 5V signal environments.
• Provides high-speed performance with balanced propagation delays and symmetrical output impedance.
• Includes power-down protection on inputs and outputs to prevent excessive current draw.
• Offers robust ESD protection and latch-up performance exceeding 500 mA.

Latches Applications

• Low-power and high-speed 3.3V applications
• Bus organization systems requiring address or data latching
• Interfaces between 3.3V logic and 5V signal environments

Latches Procurement Notes

Verify the package type matches the required footprint, as the TTR suffix indicates Tape and Reel packaging in TSSOP-20. Confirm that the voltage levels and current drive requirements align with the system's 3.3V operation and 5V tolerance needs. Ensure static handling procedures are followed due to the CMOS technology used.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is needed for 3.3V systems interfacing with 5V signals. It is suitable for designs prioritizing low power consumption alongside AC/ACT family speed performance. Consider the TSSOP-20 package constraints and the specific timing requirements regarding propagation delay and setup/hold times.

Latches Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices manufactured by STMicroelectronics. The LCX series is designed to provide high-speed performance comparable to older 5V families while operating at lower voltages. The 74LCX373 specifically functions as an octal transparent latch with three-state outputs, compatible with standard 74 series pinouts.

Latches Replacement Considerations

Check for cross-manufacturer equivalents such as MC74LCX373 from ON Semiconductor or SN74LCX373 from Texas Instruments, ensuring identical pinout and electrical specifications. Verify that any substitute maintains the 5V tolerance and 3.3V operating voltage range.