SN74AHC573DWR

Overview

The SN74AHC573DWR is an octal transparent D-type latch manufactured by Texas Instruments, designed for high-speed digital applications. 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 2V to 5.5V and supports a wide operating temperature range from -40°C to +125°C. Key electrical characteristics include a propagation delay of 14.5ns at 5V and low static current consumption of 4µA. Output drive capabilities provide a low-level output current of 32mA and a high-level output current of -8mA.

Feature Summary

• Provides eight independent transparent D-type latches with non-inverting logic functionality.
• Integrates three-state outputs to facilitate direct bus connections without external buffers.
• Operates across a broad supply voltage spectrum from 2V to 5.5V for flexible system integration.
• Ensures reliable performance in demanding environments with an extended industrial temperature range.

Applications

• High-speed data buffering and register storage in digital systems
• Bus-oriented memory mapping and address decoding circuits
• Portable and battery-powered equipment requiring low power consumption

Procurement Notes

Verify the specific ordering suffix to confirm the reel packaging configuration, as standard tape-and-reel quantities typically consist of 2000 units per manufacturer standard package. Confirm RoHS compliance status and ensure the selected variant matches the required lead-free specifications for your assembly process. Cross-reference the datasheet revision history to validate any recent design or material changes before finalizing procurement orders.

Selection Notes

Select this component when designing systems that require low-voltage operation down to 2V combined with moderate speed performance. The AHC series offers improved switching speeds compared to HC logic while maintaining lower power dissipation than ABT families. Ensure the application environment stays within the specified -40°C to +125°C temperature limits and that the 20-SOIC package footprint aligns with the PCB layout constraints.

Part Context

This part belongs to the SN74AHC573 family of octal D-type latches, which are widely used in general-purpose digital logic applications. The 'DWR' suffix indicates the device is supplied in a 20-lead Small Outline Integrated Circuit (SOIC) package with a standard reel quantity. It serves as a core building block for data storage and transfer operations in microprocessor-based systems and communication interfaces.

Replacement Considerations

SN74AHC573DWRE4: Pin-compatible alternative with identical electrical specifications and enhanced environmental compliance markings.