SN74ABT843NT

Latches Overview

The SN74ABT843NT is a 9-bit bus-interface D-type latch with 3-state outputs manufactured by Texas Instruments. It utilizes state-of-the-art EPIC-IIB BiCMOS design to significantly reduce power dissipation while providing high-drive outputs capable of driving highly capacitive or low-impedance loads. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range from -40°C to +85°C. It features buffered output-enable inputs that allow the nine outputs to be placed in normal logic states or high-impedance states, ensuring safe power-up and power-down conditions without loading bus lines.

Latches Feature Summary

• Utilizes EPIC-IIB BiCMOS technology for reduced power dissipation
• Provides high-drive outputs suitable for low-impedance loads
• Includes buffered output-enable for high-impedance control
• Ensures high-impedance state during power transitions

Latches Applications

• Implementing buffer registers
• Configuring I/O ports
• Bidirectional bus drivers
• Working registers

Latches Procurement Notes

Verify the specific ordering suffix 'NT' corresponds to the Plastic DIP package variant when sourcing components. Confirm that the procurement channel provides documentation matching the SN74ABT843 datasheet specifications. Ensure the received parts align with the commercial temperature range requirements (-40°C to +85°C) rather than military specifications associated with the SN54ABT843 series.

Latches Selection Notes

Select this component for applications requiring 9-bit data storage with high-drive capabilities and 3-state bus interfacing. It is appropriate for systems needing to drive heavy capacitive loads directly. Consider the Plastic DIP (NT) package availability if through-hole mounting is required. Verify that the system voltage remains within the 4.5 V to 5.5 V range for optimal performance.

Latches Part Context

This part belongs to the SN74ABT843 family of 9-bit bus-interface D-type latches. It is the commercial grade version characterized for operation from -40°C to +85°C, distinct from the SN54ABT843 which covers the full military temperature range. The NT suffix specifically denotes the Plastic Dual-In-Line package option available for this logic family.

Latches Replacement Considerations

SN74ABT843DW

Latches FAQ

How does the device handle power-up and power-down conditions?

The outputs automatically enter a high-impedance state during power-up and power-down to prevent loading the bus lines.

What is the function of the OE input?

The buffered output-enable (OE) input places the nine outputs into either a normal logic state or a high-impedance state without affecting internal latch operations.