74ACQ573SJ

Latches Overview

The onsemi 74ACQ573SJ is an octal D-type latch with 3-STATE outputs, part of the Quiet Series utilizing FACT technology. It features buffered common Latch Enable (LE) and Output Enable (OE) inputs. The device operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. Key electrical characteristics include output source/sink currents of 24 mA, maximum quiescent supply current of 40 µA, and propagation delays up to 12.5 ns at 3.3V or 9.0 ns at 5.0V. It is housed in a 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide.

Latches Feature Summary

• Utilizes FACT Quiet Series technology for guaranteed simultaneous switching noise levels and improved dynamic threshold performance.
• Features GTO output control and undershoot corrector for superior signal integrity.
• Inputs and outputs are located on opposite sides of the package to facilitate easy interface with microprocessors.
• Provides improved latch-up immunity and reduced ICC and IOZ values.

Latches Applications

• Microprocessor memory address latching
• I/O port expansion
• Mobile applications requiring low power dissipation

Latches Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm the exact package type, as the 'SJ' designation corresponds to the 20-Lead SOP. Confirm RoHS compliance status and lead-free availability through official datasheets or authorized distributors. Ensure the procurement channel provides valid traceability for this legacy component series.

Latches Selection Notes

Select the 74ACQ573SJ when high-speed operation with low power consumption is required alongside strict noise immunity standards. The device is suitable for designs needing pin-to-pin skew AC performance guarantees. Consider the physical layout benefits of opposing input/output pins for complex PCB routing. Verify that the system voltage falls within the 2.0V to 6.0V operating range.

Latches Part Context

This component belongs to the 74ACQ/ACTQ family of logic ICs manufactured originally by Fairchild Semiconductor, now under onsemi. The Quiet Series represents an advanced CMOS technology designed to mitigate electromagnetic interference issues common in high-density digital systems. The 74ACQ573 variant specifically offers an octal configuration with tri-state buffering capabilities.

Latches Replacement Considerations

The 74ACTQ573SJ is functionally identical but operates strictly at 5V. Other compatible variants include the SC (SOIC), MTC (TSSOP), and PC (PDIP) packages. Cross-reference with other manufacturers' 74AC573 equivalents if the specific Quiet Series noise specifications are not critical to the design.

Latches FAQ

What is the primary advantage of the Quiet Series technology in this latch?

It guarantees simultaneous switching noise levels and dynamic threshold performance, reducing electromagnetic interference during data transitions.

How does the package layout benefit circuit design?

The inputs and outputs are positioned on opposite sides of the package, which simplifies routing and interfacing with microprocessors.