DM74AS574N

Overview

The DM74AS574N is an octal D-type flip-flop manufactured by Fairchild Semiconductor, belonging to the AS (Advanced Schottky) logic series. It features eight non-inverting D-type inputs with a common clock and three-state outputs. The device operates within a supply voltage range of 4.5V to 5.5V. Key electrical parameters include a propagation delay of 9ns, a high-level output current of -15mA, and a low-level output current of 48mA. It is housed in a 20-pin PDIP package and supports through-hole mounting.

Feature Summary

• Octal configuration providing eight independent D-type storage elements within a single integrated circuit
• Three-state output capability enabling efficient bus-oriented system architectures
• Common clock input structure for synchronized data latching across all channels
• Advanced Schottky process technology ensuring high switching speed with reduced power dissipation

Applications

• High-performance memory decoding systems requiring fast access times
• Data transmission systems utilizing bus-oriented interfaces
• Microprocessor input or output port implementations
• Communication systems demanding buffered signal integrity

Procurement Notes

Verify component authenticity against official Fairchild Semiconductor documentation prior to integration. Confirm that the specific ordering suffix matches the required package type and temperature rating. Ensure compliance with RoHS directives applicable to your region. Cross-reference the manufacturer part number with authorized distributor catalogs to validate current production status and availability constraints.

Selection Notes

Select this component when designing systems requiring high-speed data storage with minimal propagation delay. The Advanced Schottky technology offers improved performance over standard Schottky counterparts while maintaining functional compatibility with 74LS logic families. Consider the three-state outputs for multiplexed bus applications where high impedance states are necessary to prevent signal contention.

Part Context

This device is part of the broader DM74AS family of Advance Schottky logic circuits. It shares design principles with other members like the DM74AS244 bus driver and DM74AS02 NOR gate, utilizing ion-implanted Schottky TTL processes. The family is characterized by oxide-isolated structures designed for high-speed digital applications in memory and communication subsystems.

Replacement Considerations

Public confirmed substitute part numbers include SN74AS574N from Texas Instruments. Verify pinout compatibility and electrical parameter equivalence before substitution. Other manufacturers may offer equivalent parts under different naming conventions within the 74AS series.