DM74ALS576AN

Overview

The DM74ALS576AN is an octal D-type flip-flop manufactured by Fairchild Semiconductor in the 74ALS logic series. It features positive-edge triggering and provides eight independent D-type flip-flops with three-state outputs. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum clock frequency of 30 MHz. It exhibits a typical propagation delay of 14ns at 5V with 50pF load, drawing 18mA of static current. Packaged in a 20-pin DIP format, it functions as a standard logic component suitable for high-speed digital applications.

Feature Summary

• Contains eight independent D-type flip-flops with positive-edge clock triggering
• Outputs feature three-state capability for effective bus isolation
• Utilizes advanced low-power Schottky technology for improved AC performance
• Functionally compatible with standard Schottky TTL counterparts

Applications

• Octal data storage registers in microprocessor systems
• Bidirectional bus transceiver interfaces requiring latching
• High-speed digital signal processing circuits
• Memory interface buffering and control logic

Procurement Notes

Verify the specific suffix 'AN' corresponds to the 20-pin DIP package configuration when sourcing replacements. Confirm that the target application environment remains within the specified 0°C to 70°C operating temperature range. Ensure power supply stability between 4.5V and 5.5V to maintain timing integrity. Check for RoHS compliance requirements if modern environmental standards apply to the assembly process.

Selection Notes

Select this component when an octal storage element with tri-state output control is required in a through-hole design. The ALS series offers faster switching speeds compared to standard LS logic while maintaining lower power consumption than original S-TTL devices. Consider the 20-pin DIP footprint constraints during PCB layout planning. Evaluate the 30 MHz maximum clock rate against system timing requirements to ensure adequate setup and hold times are met.

Part Context

This part belongs to the Fairchild DM74ALS family, representing the Advanced Low-power Schottky logic series. It serves as a direct functional equivalent to the SN74ALS576 from Texas Instruments. The device is designed for use in memory and microcomputer systems where high-speed data transfer and storage are critical. It maintains pin compatibility with earlier Schottky TTL generations.

Replacement Considerations

• SN74ALS576N (Texas Instruments)