SN74AC533N

Latches Overview

The SN74AC533N 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 accepts input voltages up to 6 V. The device features a maximum propagation delay of 10.5 ns at 5 V. It includes eight data inputs, a latch-enable input, and a buffered output-enable input that controls the high-impedance state without affecting internal latching operations.

Latches Feature Summary

• Octal transparent D-type latches with three-state inverting outputs
• Direct bus line driving capability without interface or pullup components
• High-level input voltage tolerance allows direct connection to 5-V systems
• Output-enable input isolates outputs while retaining or entering new data

Latches Applications

• Parallel data storage for microprocessor-based systems
• Bus-oriented memory mapping applications
• Clock drivers and buffer circuits
• Register banks in digital logic designs

Latches Procurement Notes

Verify the specific package type and ordering suffix against the manufacturer's current documentation before procurement. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the selected variant matches the required operating temperature range and pinout configuration for your PCB layout.

Latches Selection Notes

Select this component when designing systems requiring parallel data retention with bus isolation capabilities. Consider the AC series specifications for operation between 2 V and 6 V. Evaluate the 10.5 ns propagation delay against system timing requirements. Verify that the PDIP-20 package aligns with available board space and mounting constraints.

Latches Part Context

This part belongs to the SN74AC logic family, which utilizes advanced CMOS technology. It provides higher speed and wider voltage operation compared to standard TTL devices. The SN74AC533N specifically offers octal latching functionality in a through-hole package suitable for prototyping and general-purpose digital circuit integration.

Latches Replacement Considerations

SN74AC533DW (SOIC-20 package)

Latches FAQ

How does the output-enable input affect internal latch operations?

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

What is the function of the latch-enable input?

When the latch-enable input is high, the Q outputs follow the complements of the data inputs. When taken low, the outputs are latched at the inverse logic levels set up at the inputs.