74F823SC Equivalent & Substitute Parts

Part Overview

The 74F823SC is a single-element D-type flip-flop with 9-bit configuration, designed for high-speed logic applications requiring master reset functionality. This component operates at a clock frequency of 160 MHz with tri-state, non-inverted outputs. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74F823SC

onsemiIn Stock: 76574F823SC Datasheet

Current PartRFQ

SN74ABT823DW

Texas InstrumentsIn Stock: 964SN74ABT823DW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F823SC is determined by the following critical parameters:

• Logic Function: Single-element D-type flip-flop with 9-bit configuration and master reset capability
• Output Configuration: Tri-state, non-inverted outputs
• Trigger Mechanism: Positive edge triggering
• Package Compatibility: 24-SOIC surface mount package with identical physical dimensions
• Electrical Interface: 4.5V to 5.5V supply voltage compatibility
• Speed Classification: Clock frequency and propagation delay performance within acceptable operating margins

The SN74ABT823DW from Texas Instruments satisfies these substitution criteria through functional equivalence in logic topology, output type, trigger mechanism, and package form factor. Both parts operate within the same voltage supply range and maintain compatible pin configurations.

Parameter Comparison

Engineering Selection Recommendations

The SN74ABT823DW is a direct functional substitute for the obsolete 74F823SC. Both components share identical logic topology, output configuration, trigger mechanism, and package form factor. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The SN74ABT823DW demonstrates superior electrical performance characteristics, including higher clock frequency (200 MHz versus 160 MHz), faster propagation delay (6.1 ns versus 9.5 ns), and significantly lower quiescent current consumption (250 µA versus 100 mA). The substitute part supports an extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and carries ROHS3 compliance certification.

Output current capabilities differ between the two parts. The SN74ABT823DW provides higher output drive current (32 mA high, 64 mA low) compared to the 74F823SC (3 mA high, 24 mA low), enabling enhanced fan-out capability and improved noise margin in logic circuits.

Frequently Asked Questions (FAQ)

Q: Can the SN74ABT823DW directly replace the 74F823SC in existing designs?

A: Yes. Both parts share identical pin configurations, package dimensions (24-SOIC), and logic function. The substitute part operates within the same 4.5V to 5.5V supply voltage range and maintains functional compatibility for D-type flip-flop applications with 9-bit configuration and master reset capability.

Q: What are the key differences between these two parts?

A: The primary differences are product status, performance specifications, and compliance certifications. The SN74ABT823DW is in active production, operates at higher clock frequency (200 MHz), exhibits faster propagation delay (6.1 ns), and consumes significantly less quiescent current (250 µA). The substitute part also supports a wider operating temperature range and carries ROHS3 compliance.

Q: Are there any package compatibility concerns?

A: No. Both the 74F823SC and SN74ABT823DW use identical 24-SOIC surface mount packaging with 0.295" (7.50mm) width. Pin-to-pin compatibility is maintained, allowing direct PCB footprint reuse.

Q: Does the higher output current of the SN74ABT823DW affect circuit design?

A: The increased output drive current (32 mA high, 64 mA low) of the SN74ABT823DW compared to the 74F823SC (3 mA high, 24 mA low) provides improved fan-out capability and enhanced noise margin. This represents a performance advantage with no negative design implications for standard logic applications.

Q: What is the significance of the extended temperature range in the SN74ABT823DW?

A: The SN74ABT823DW operates across -40°C to 85°C, compared to the 74F823SC range of 0°C to 70°C. This extended range accommodates industrial and automotive applications requiring operation in wider environmental conditions.