8512801RA

Latches Overview

The Texas Instruments 8512801RA is a military-grade SN54HC573AJ octal transparent D-type latch with 3-state outputs. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature from -55°C to 125°C. The device features high-current outputs capable of driving up to 15 LSTTL loads, low power consumption with a maximum ICC of 80 µA, and typical propagation delays of 21 ns at 5 V. It utilizes a 20-pin CDIP package.

Latches Feature Summary

• Octal transparent D-type latches with 3-state outputs designed for driving highly capacitive or low-impedance loads
• High-current output capability allows direct driving of bus lines without interface components
• Low input current and low power consumption characteristics suitable for battery-powered applications

Latches Applications

• Buffer registers
• Bidirectional bus drivers
• Working registers

Latches Procurement Notes

Verify the specific ordering suffix and material type against the latest TI Package Option Addendum. Confirm that the RoHS status and lead finish meet project requirements. Ensure the military-grade temperature rating aligns with environmental specifications. Cross-reference the part marking to validate authenticity upon receipt.

Latches Selection Notes

Select this component when military-grade reliability and extended temperature ranges are required. Compare against commercial SN74HC573 variants if industrial temperatures suffice. Consider the 20-pin CDIP footprint constraints during PCB layout. Evaluate the high-current drive capabilities against load requirements to ensure signal integrity on bus lines.

Latches Part Context

This part belongs to the SNx4HC573A family of high-speed CMOS logic devices. It shares functional compatibility with other octal latches in the HC series but offers enhanced ruggedness for aerospace and defense environments. The device integrates eight independent D-type latches with tri-state control into a single monolithic circuit.

Latches Replacement Considerations

SN54HC573AJ

Latches FAQ

How does the Output Enable (OE) pin affect latch operation?

The OE pin controls the output state but does not affect internal latch operations. Data can be entered or retained while outputs are in the high-impedance state.

What is the recommended handling for unused inputs?

All unused inputs must be connected to VCC or GND to prevent undefined operational states and excessive current consumption caused by floating pins.