IDT74FCT823ATSOG Equivalent & Substitute Parts

Part Overview

The IDT74FCT823ATSOG is a single-element D-type flip-flop logic integrated circuit with 9-bit configuration, designed for positive edge triggering applications. Manufactured by Renesas Electronics Corporation, this component features tri-state, non-inverted outputs and is housed in a 24-SOIC surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

IDT74FCT823ATSOG

Renesas Electronics CorporationIn Stock: 1155IDT74FCT823ATSOG Datasheet

Current PartRFQ

CY74FCT823ATSOC

Texas InstrumentsIn Stock: 1708CY74FCT823ATSOC Datasheet

MFR RecommendedRFQ

CY74FCT823CTSOC

Texas InstrumentsIn Stock: 1946CY74FCT823CTSOC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IDT74FCT823ATSOG are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

• Functional Type: D-Type flip-flop with single element, 9-bit configuration
• Output Configuration: Tri-state, non-inverted outputs
• Trigger Mechanism: Positive edge triggering
• Package Format: 24-SOIC surface mount package with identical physical dimensions
• Operating Temperature Range: -40°C ~ 85°C
• Supply Voltage Compatibility: Overlapping or compatible voltage ranges

The substitute parts listed below meet these core criteria while maintaining functional equivalence for system-level applications.

Parameter Comparison

Engineering Selection Recommendations

Both CY74FCT823ATSOC and CY74FCT823CTSOC from Texas Instruments are active production alternatives to the obsolete IDT74FCT823ATSOG. Selection between these options depends on specific application requirements:

CY74FCT823ATSOC maintains electrical performance characteristics closely aligned with the original part, with identical 20ns maximum propagation delay at 5V and 300pF load. This part is suitable for direct replacement in systems where the original timing specifications are critical.

CY74FCT823CTSOC offers improved propagation delay performance at 12.5ns, representing a performance enhancement over the original specification. This part is appropriate for applications where faster switching characteristics provide system-level benefits.

Both substitute parts feature ROHS3 compliance and active product status, ensuring long-term availability and supply chain stability. The narrower supply voltage range (4.75V ~ 5.25V) compared to the original part (4.5V ~ 5.5V) must be verified against system power supply specifications. Both parts maintain identical package geometry, pin configuration, and functional characteristics required for direct PCB-level substitution.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT823ATSOC and CY74FCT823CTSOC be used interchangeably with IDT74FCT823ATSOG?

A: Both Texas Instruments parts are functionally equivalent at the logic level, sharing identical pin configuration, package format, and core operational characteristics. Direct PCB substitution is possible. However, the narrower supply voltage range (4.75V ~ 5.25V versus 4.5V ~ 5.5V) must be verified against your system power supply specifications.

Q: What is the primary difference between CY74FCT823ATSOC and CY74FCT823CTSOC?

A: The primary difference is propagation delay performance. CY74FCT823ATSOC maintains 20ns delay matching the original part, while CY74FCT823CTSOC offers faster 12.5ns delay. Both are electrically compatible; selection depends on whether your application requires the faster switching speed.

Q: Are the substitute parts available in the same package as the original?

A: Yes. Both CY74FCT823ATSOC and CY74FCT823CTSOC use the 24-SOIC surface mount package with identical physical dimensions (0.295", 7.50mm width), ensuring direct PCB compatibility without layout modifications.

Q: What is the significance of the ROHS3 compliance on the substitute parts?

A: ROHS3 compliance indicates the substitute parts meet current environmental and hazardous substance restrictions. The original IDT part does not specify RoHS status. If your application or supply chain requires RoHS compliance, the Texas Instruments alternatives satisfy this requirement.

Q: How do the output current specifications compare?

A: The substitute parts provide higher output current capability (32mA high, 64mA low) compared to the original (15mA high, 48mA low). This represents an improvement in drive capability and does not create compatibility issues in standard logic applications.

Q: What is the impact of the lower quiescent current in the substitute parts?

A: The substitute parts consume 200µA quiescent current versus 1mA in the original part, representing a five-fold reduction in standby power consumption. This is a beneficial characteristic for power-sensitive applications and does not affect functional compatibility.