CD74AC573MG4

Latches Overview

The CD74AC573MG4 is an octal transparent non-inverting latch manufactured by Texas Instruments. It features eight D-type latches with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 1.5 V to 5.5 V and supports an operating temperature range from -55°C to +125°C. Propagation delay varies based on voltage, reaching 8.5 ns at 5 V and 11.9 ns at 3.3 V. Static current consumption is typically 8 µA, with low-level output current capability of 32 mA.

Latches Feature Summary

• Octal transparent D-type latch architecture providing eight independent data storage channels
• Three-state outputs enabling direct bus-driven connections without external buffers
• Wide supply voltage operation supporting low-power systems down to 1.5 V
• High-temperature stability rated for industrial environments up to 125°C

Latches Applications

• Bus-oriented memory mapping and address decoding circuits
• Parallel-to-serial data conversion interfaces
• I/O port expansion for microcontroller systems
• Register file implementation in digital logic designs

Latches Procurement Notes

Verify the G4 suffix indicates lead-free construction compliant with RoHS standards. Confirm the 'M' designation corresponds to the standard SOIC-20 package dimensions. Ensure the component meets the specified -55°C to +125°C temperature grade for your application environment. Cross-reference the manufacturer part number directly with official Texas Instruments documentation to validate authenticity and revision status before procurement.

Latches Selection Notes

Select this component when designing systems requiring wide voltage flexibility between 1.5 V and 5.5 V. The AC series offers faster propagation speeds compared to HC or HCT counterparts. Consider the SOIC-20 package for surface-mount assembly requirements. Evaluate the 32 mA sink current capability against load requirements to ensure adequate drive strength for connected peripherals without exceeding electrical limits.

Latches Part Context

This part belongs to the Texas Instruments 74AC logic family, characterized by high-speed CMOS technology. It serves as a functional equivalent to industry-standard octal latches but with enhanced performance metrics. The device integrates level-shifting capabilities inherent to the AC series, allowing compatibility across various voltage domains while maintaining signal integrity in high-frequency applications.

Latches Replacement Considerations

The SN74AC573DWR is a pin-compatible alternative offering identical logical functionality in a TSSOP-20 package. Verify package footprint differences during PCB layout adjustments. Both devices share the same electrical specifications and timing characteristics, ensuring seamless integration into existing designs requiring minor form-factor modifications.