SN74ABT533ADWRG4

Latches Overview

The SN74ABT533ADWRG4 is an octal transparent 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 (OE) inputs to control the high-impedance state independently of internal latch operations.

Latches Feature Summary

• Transparent data latching behavior where outputs follow input complements when latch-enable is high, and hold data when latch-enable is low.
• High-drive output capability designed for driving bus lines without requiring interface or pullup components.
• Buffered output-enable input allows placing outputs in a high-impedance state without affecting internal latch operations.
• ESD protection performance exceeding standard requirements for robust signal integrity.

Latches Applications

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

Latches Procurement Notes

Verify that the ordering suffix G4 confirms compliance with RoHS standards and specifies the specific package variant intended for your assembly process. Confirm the lead time availability directly with the manufacturer or authorized distributors as production schedules may vary. Ensure the component matches the required temperature grade and electrical specifications for your target application environment before finalizing procurement orders.

Latches Selection Notes

Select this component when an octal latch configuration with 3-state outputs is required for bus interfacing. The ABT series offers faster switching speeds compared to standard TTL logic. Consider the SOIC-20 package dimensions for PCB layout constraints. Verify that the drive current capabilities meet the load requirements of the connected circuitry to ensure reliable signal transmission.

Latches Part Context

This part belongs to the SN74ABT family of logic devices, which are based on BiCMOS technology. The family includes various latches, flip-flops, and buffers designed for high-speed digital applications. The SN74ABT533A variant specifically provides transparent latching functionality, distinguishing it from edge-triggered flip-flops like the SN74ABT374. It is part of Texas Instruments' broader portfolio of general-purpose logic ICs.

Latches Replacement Considerations

SN74ABT533ADWR is a compatible alternative without the environmental suffix. SN74ABT533APWR offers the same logical function in a TSSOP package. SN74ABT374 serves as a functional substitute if edge-triggered latching is acceptable instead of transparent latching. Verify pinout compatibility and electrical characteristics before substituting any other family members.