SN74AC533NSR

Latches Overview

The SN74AC533NSR is an octal transparent D-type latch with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature from -40°C to +85°C. The device features a maximum propagation delay of 10.5 ns at 5 V, with high-level output current reaching -24 mA and low-level output current up to 24 mA. It utilizes a 20-pin SOIC package.

Latches Feature Summary

• Provides eight transparent D-type latches where outputs follow the complements of data inputs when latch-enable is high.
• Features buffered output-enable input to place outputs in normal logic states or high-impedance state without affecting internal operations.
• Capable of driving bus lines directly without requiring interface or pullup components due to high-impedance state and increased drive capability.

Latches Applications

• Driving bus lines
• Registering wide data words
• Performing parallel-to-serial conversion

Latches Procurement Notes

Verify the specific ordering suffix 'SR' corresponds to tape and reel packaging for the NS (SOIC) variant. Confirm that the component meets RoHS standards as indicated in the manufacturer's documentation. Ensure compatibility with the specified -40°C to +85°C operating temperature range for your application environment before finalizing procurement.

Latches Selection Notes

Select this component when designing systems requiring octal data storage with tri-state output control. It is suitable for applications needing direct bus driving capabilities. Consider the 2V to 6V supply voltage range and the specific timing requirements relative to the LE and OE inputs during system architecture planning.

Latches Part Context

This part belongs to the SN74AC series of logic devices, which are designed for high-speed CMOS applications. The AC series offers performance improvements over standard HC or HCT logic families, including faster propagation delays and wider operating voltage ranges. The NSR suffix indicates surface-mount packaging in a tape and reel format for automated assembly.

Latches Replacement Considerations

SN74AC533DWR

Latches FAQ

How does the Output Enable (OE) input affect the latch operation?

The OE input controls the output state but does not affect the internal operations of the latches. Data can be retained or entered while the outputs are in the high-impedance state.

What is the recommended configuration for OE during power-up or power-down?

To ensure the high-impedance state during power-up or power-down, OE should be tied to VCC through a pullup resistor, with the minimum value determined by the driver's current-sinking capability.