74ACT573SCX

Latches Overview

The onsemi 74ACT573SCX is an octal D-type latch featuring three-state outputs, manufactured using high-speed silicon gate CMOS technology. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -40°C to +85°C. The device provides buffered common Latch Enable (LE) and Output Enable (OE) inputs. Key electrical parameters include a propagation delay of 10.5 ns at 5V, a maximum quiescent supply current of 40 µA, and output drive capabilities sourcing or sinking 24 mA. It is housed in a 20-lead Small Outline Integrated Circuit (SOIC) package.

Latches Feature Summary

• Features inputs and outputs positioned on opposite sides of the package to facilitate direct interfacing with microprocessors.
• Provides three-state outputs controlled by a dedicated Output Enable input for efficient bus interfacing applications.
• Incorporates TTL-compatible inputs, allowing direct connection to standard logic families without level shifting.

Latches Applications

• Microprocessor data port buffering
• Bus-oriented memory register storage
• High-performance digital signal routing

Latches Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity levels prior to integration into surface mount assembly processes. Ensure the component version matches the required logic family characteristics for your design.

Latches Selection Notes

Select this component when designing systems requiring octal latching with high-speed performance and bus isolation. The ACT series offers faster switching speeds compared to standard AC counterparts while maintaining compatibility with TTL logic thresholds. Consider the SOIC package dimensions for PCB layout constraints and thermal management requirements.

Latches Part Context

This part belongs to the 74ACT573 family of octal latches. It is functionally identical to the 74AC573 but includes TTL-compatible inputs. The 'SC' designation indicates the 20-lead SOIC package variant. This component serves as a transparent latch when enabled, storing data upon the falling edge of the latch enable signal.

Latches Replacement Considerations

• 74ACT573SJ
• 74ACT573MTC

Latches FAQ

How does the 74ACT573SCX differ from the 74AC573?

The primary difference is that the 74ACT573 features TTL-compatible inputs, whereas the 74AC573 uses CMOS-compatible input thresholds.

What is the function of the OE pin?

The Output Enable (OE) pin controls the three-state buffers. When OE is LOW, the outputs are active; when HIGH, they enter a high-impedance state.