SN74ABT843DWR

Latches Overview

The SN74ABT843DWR is a 9-bit bus-interface D-type latch with 3-state outputs manufactured by Texas Instruments. It utilizes EPIC-II BiCMOS technology to reduce power dissipation and features high-drive outputs capable of -32 mA IOH and 64 mA IOL. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. Typical propagation delays are 6.3 ns, with latch-up performance exceeding 500 mA per JEDEC standards.

Latches Feature Summary

• Designed for driving highly capacitive or low-impedance loads using EPIC-II BiCMOS technology
• Provides buffered output-enable input to control normal logic states or high-impedance states
• Outputs enter high-impedance state during power-up and power-down conditions
• Latch-up performance exceeds 500 mA per JEDEC standard JESD-17

Latches Applications

• Implementing buffer registers
• I/O port implementations
• Bidirectional bus drivers
• Working registers

Latches Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the SOIC package and tape-and-reel quantity. Confirm RoHS compliance status and lead finish details against the latest Package Option Addendum. Ensure the procurement matches the catalog status and environmental ratings specified in the manufacturer's documentation.

Latches Selection Notes

Select this component when nine transparent D-type latches with 3-state outputs are required for bus interfacing. Consider the high-drive capability for low-impedance loads and the specific -40°C to +85°C operating temperature range. Verify that the EPIC-II BiCMOS design meets the system's power dissipation requirements compared to alternative logic families.

Latches Part Context

This part belongs to the SN74ABT843 family of 9-bit bus-interface D-type latches. It is available in various packages including SOIC (DW), SSOP (DB), and ceramic options. The SN74ABT843DWR specifically denotes the SOIC package variant intended for surface-mount applications.

Latches Replacement Considerations

SN74ABT843DW is the tube-packaged equivalent of the same device.