SN74ALS533ADW

Overview

The SN74ALS533ADW 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 eight latches in a single package, providing full parallel access for loading data. Key electrical characteristics include a low-level output current of 24 mA and a high-level output current of -2.6 mA at VCC = 4.5 V. Propagation delays from D to Q range from 4 ns to 19 ns, while setup time before the latch-enable falling edge is 15 ns.

Feature Summary

• Features three-state bus-driving inverting outputs designed for driving highly capacitive or relatively low-impedance loads.
• Incorporates buffered control inputs and PNP inputs to reduce DC loading on data lines.
• Allows retention of old data or entry of new data while outputs are disabled via the OE input.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'DW' corresponds to the SOIC-20 plastic small-outline package configuration. Confirm that the component meets RoHS compliance standards as indicated in the packaging information. Ensure the procurement matches the active production status and catalog rating specified in the datasheet documentation.

Selection Notes

Select this component when designing systems requiring octal data storage with tri-state capability. It serves as a functional equivalent to the SN74ALS373A, distinguished by its inverted output logic. Consider the ALS series performance metrics regarding propagation delay and drive strength relative to system timing requirements.

Part Context

This part belongs to the SN74ALS533A family of octal D-type transparent latches. It is functionally equivalent to the SN74ALS373A but provides inverted outputs. The device is characterized for operation from 0°C to 70°C and is available in various package options including standard plastic DIPs and plastic small-outline packages.

Replacement Considerations

The SN74ALS373A is a functionally equivalent alternative within the same family, differing primarily in having non-inverted outputs instead of the inverted outputs found in the SN74ALS533A.