SN74AS533ADW

Overview

The SN74AS533ADW is an octal D-type transparent latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from 0°C to 70°C. The device features inverting outputs, buffered control inputs, and PNP inputs that reduce DC loading on data lines. Propagation delay ranges from 4 ns to 9.5 ns depending on the signal path. Low-level output current reaches 48 mA, while high-level output current is -15 mA.

Feature Summary

• Features three-state bus-driving inverting outputs designed for driving highly capacitive or low-impedance loads.
• Includes buffered control inputs and PNP inputs to minimize DC loading on data lines.
• Allows full parallel access for loading and retains internal data while outputs are disabled.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'DW' corresponds to the plastic small-outline package configuration required for your design. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure the selected component matches the active production status indicated in official documentation.

Selection Notes

Select this component when high-speed operation and strong drive capability are required for bus applications. The AS series offers faster switching speeds compared to standard ALS variants. Verify that the inverting logic polarity aligns with system requirements and that the SOIC-20 package fits the available PCB footprint.

Part Context

This part belongs to the SN74AS533A family of octal D-type transparent latches. It is functionally equivalent to the SN74ALS533A but utilizes AS technology for higher speed performance. The device integrates eight latches into a single package with dedicated output enable controls.

Replacement Considerations

SN74ALS533ADW