74ACT533PC

Latches Overview

The onsemi 74ACT533PC is an octal transparent latch with 3-STATE outputs housed in a 20-lead Plastic Dual-In-Line (PDIP) package. It operates within a supply voltage range of 4.5V to 5.5V and supports temperatures from -40°C to +85°C. The device features TTL-compatible inputs, outputs capable of sourcing or sinking 24 mA, and propagation delays ranging from 2.0 ns to 9.5 ns depending on the signal path.

Latches Feature Summary

• Contains eight D-type latches with 3-STATE standard outputs for bus organized system applications
• Outputs are controlled by Latch Enable and Output Enable inputs to manage data transparency and high impedance states
• TTL-compatible inputs ensure compatibility with standard logic families

Latches Applications

• Driving bus lines in digital systems
• Buffering memory address registers
• Bus organized system applications requiring data storage and isolation

Latches Procurement Notes

Verify the specific package variant required, as the 74ACT533 series is available in SOIC, TSSOP, and PDIP configurations. Confirm that the PDIP version meets mechanical constraints. Check current availability status as older logic components may have limited stock or end-of-life implications. Ensure the design accounts for the specified operating temperature range and power supply requirements.

Latches Selection Notes

Select this component when an octal latch with tri-state capability is needed for bus interfacing. It serves as the inverted counterpart to the ACT373. Consider the 24 mA output drive strength and low quiescent current characteristics. Verify that the 20-lead PDIP footprint fits the PCB layout and that the 4.5V to 5.5V supply range matches the system power rails.

Latches Part Context

This part belongs to the 74ACT logic family, known for CMOS performance with TTL-compatible inputs. The 74ACT533 specifically provides octal latching functionality. It is manufactured under the Fairchild Semiconductor brand, which is now part of onsemi. The device is designed for general-purpose digital logic applications requiring data storage and bus isolation.

Latches Replacement Considerations

The datasheet identifies the 74ACT373 as the inverted version of this device. Other octal latches from the 74ACT family may be compatible if pinouts and electrical characteristics align. Verify functional equivalence before substitution.