74ACTQ533SC

Latches Overview

The onsemi 74ACTQ533SC is an octal transparent latch with 3-STATE outputs housed in a 20-Lead SOIC package. It operates within a supply voltage range of 4.5V to 5.5V and supports temperatures from -40°C to +85°C. Propagation delay (Dn to On) ranges from 2.0ns to 8.5ns, while LE to On delay spans 2.5ns to 9.5ns. Output enable/disable times reach up to 10.5ns. The device provides 24mA source/sink current capability and features 4kV minimum ESD immunity.

Latches Feature Summary

• Utilizes Quiet Series technology for guaranteed simultaneous switching noise levels and dynamic threshold performance.
• Features GTO output control and undershoot corrector for superior switching characteristics.
• Includes split ground bus design to improve latch-up immunity.
• Provides 3-STATE outputs suitable for driving bus lines or buffering memory address registers.

Latches Applications

• Bus organized system applications
• Driving bus lines
• Buffering memory address registers

Latches Procurement Notes

Verify the specific ordering code suffix to confirm the package type, as the base part number covers multiple packages including SOIC, TSSOP, and PDIP. Confirm RoHS compliance status through official documentation. Check for availability of tape and reel options if required by manufacturing processes. Ensure the component meets the required operating temperature range for the target application environment.

Latches Selection Notes

Select this component when an octal latch with high-drive 3-STATE outputs is required for bus systems. The ACTQ series offers improved noise performance compared to standard AC logic. Consider the 20-pin SOIC footprint for PCB layout constraints. Verify that the input voltage levels are compatible with the driving logic family to ensure proper HIGH and LOW level recognition.

Latches Part Context

This device belongs to the FACT Quiet Series logic family, designed for low-noise digital applications. It serves as an inverted version of the ACTQ373. The product line emphasizes reduced ICC and IOZ currents alongside enhanced dynamic threshold performance. It is manufactured using Fairchild's proprietary quiet switching technology.

Latches Replacement Considerations

MC74ACTQ533SC

Latches FAQ

What is the function of the Latch Enable (LE) input?

When LE is HIGH, the latches are transparent and data passes through. When LE transitions from HIGH to LOW, the data present at the inputs is latched.

How does the Output Enable (OE) input affect the outputs?

When OE is LOW, the outputs are active in 2-state mode. When OE is HIGH, the outputs enter a high impedance state.

What is the maximum quiescent supply current?

The maximum quiescent supply current is 40.0 µA at VCC = 5.5V.