SN74ACT533DW

Overview

The SN74ACT533DW is an octal transparent D-type 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 accepts input voltages up to 5.5 V, ensuring TTL-voltage compatibility. The device features inverting outputs capable of driving bus lines directly without interface components. Key timing parameters include a maximum propagation delay (tpd) of 11 ns at 5 V. The high-impedance state prevents significant loading or driving of bus lines. Data retention occurs when the latch-enable input is low.

Feature Summary

• Octal transparent D-type latches with 3-state outputs
• TTL-voltage compatible inputs accepting voltages up to 5.5 V
• Inverting outputs drive bus lines directly without pullup components
• High-impedance state isolates outputs from bus lines

Applications

• Bus line driving applications
• Data storage and transfer systems
• Parallel-to-serial conversion circuits

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature rating. Confirm RoHS compliance status for environmental requirements. Ensure the manufacturer part number aligns exactly with the design specifications. Check for any recent product life cycle changes or obsolescence notices before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring octal data latching with direct bus interfacing capabilities. The ACT series offers improved speed over standard 74LS equivalents while maintaining TTL compatibility. Consider the SOIC-20 package dimensions for PCB layout constraints. Evaluate power dissipation characteristics against thermal management requirements in the target application environment.

Part Context

This device belongs to the SN74ACT logic family, which combines CMOS technology with TTL-compatible inputs. It serves as a parallel data storage element in digital systems. The octal configuration allows handling eight bits simultaneously. The 3-state output feature facilitates connection to shared data buses in microprocessor-based architectures.

Replacement Considerations

SN74ACT533N: PDIP-20 package variant with identical electrical specifications.