74LVC823ADB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC823ADB,112 is a single-element D-type flip-flop with 9-bit configuration and tri-state, non-inverted output. Manufactured by Nexperia USA Inc., this logic IC operates across a 1.65V to 3.6V supply range with a maximum propagation delay of 10ns at 3.3V and 50pF load. The device is packaged in 24-SSOP (0.209", 5.30mm width) and is marked as not for new designs. Identifying equivalent and substitute parts is necessary for design flexibility, inventory management, and sourcing alternatives when the primary part becomes unavailable or when design requirements necessitate different packaging or performance characteristics.

Substiute Parts

74LVC823ADB,112

Nexperia USA Inc.In Stock: 112774LVC823ADB,112 Datasheet

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SN74LVC821ADGVR

Texas InstrumentsIn Stock: 881SN74LVC821ADGVR Datasheet

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SN74LVC823ADBR

Texas InstrumentsIn Stock: 791SN74LVC823ADBR Datasheet

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SN74LVC823APW

Texas InstrumentsIn Stock: 784SN74LVC823APW Datasheet

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SN74LVC823APWR

Texas InstrumentsIn Stock: 3398SN74LVC823APWR Datasheet

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SN74LVC823APWT

Texas InstrumentsIn Stock: 2094SN74LVC823APWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74LVC823ADB,112 are identified based on the following critical parameters:

Core Functional Parameters:

• D-Type flip-flop architecture with tri-state, non-inverted output
• Positive edge trigger configuration
• Supply voltage compatibility: 1.65V ~ 3.6V
• Output drive capability: 24mA / 24mA (high/low)
• Quiescent current: 10 µA
• Input capacitance: 5 pF
• Series compatibility: 74LVC logic family

Allowable Variations:

• Number of bits per element: 9-bit (main part) to 10-bit (SN74LVC821ADGVR only)
• Clock frequency: 150 MHz to 200 MHz
• Propagation delay: 7.3ns to 10ns @ 3.3V, 50pF
• Operating temperature range: -40°C ~ 85°C to -40°C ~ 125°C
• Package type: 24-SSOP, 24-TSSOP, or 24-TFSOP
• Packaging format: Tube or Tape & Reel
• Product status: Active alternatives available for Not For New Designs status

Substitutes maintain electrical compatibility through identical supply voltage ranges, output characteristics, and logic family specifications. Package variations accommodate different PCB assembly requirements while preserving pin functionality.

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (Same Package): SN74LVC823ADBR is the primary substitute when maintaining the 24-SSOP (0.209", 5.30mm) package footprint is required. This part offers improved propagation delay (8ns versus 10ns) and active product status from Texas Instruments, providing better long-term availability and design support compared to the Nexperia part marked as not for new designs.

For Compact PCB Layouts (Smaller Package): SN74LVC823APWR, SN74LVC823APW, and SN74LVC823APWT provide the 24-TSSOP (0.173", 4.40mm) package option, reducing board space by approximately 17% compared to the 24-SSOP variant. These parts maintain identical 9-bit configuration and electrical specifications. SN74LVC823APWR offers the highest inventory availability (3300 pcs) in Tape & Reel format for high-volume production.

For Extended Temperature Range Applications: The 74LVC823ADB,112 supports -40°C ~ 125°C operation. All Texas Instruments substitutes operate to -40°C ~ 85°C. Applications requiring the full 125°C upper limit must retain the Nexperia part or verify system requirements do not exceed 85°C.

For 10-Bit Configuration: SN74LVC821ADGVR provides a 10-bit variant in 24-TFSOP package with the fastest propagation delay (7.3ns). This substitute is applicable only when the additional bit capacity is functionally compatible with the circuit design.

Compliance and Certification: All parts listed maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and EAR99 export classification. No compliance barriers exist for substitution within this group.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC823ADBR directly replace 74LVC823ADB,112 without PCB modifications?

A: Yes. SN74LVC823ADBR maintains identical pin configuration and 24-SSOP package dimensions (0.209", 5.30mm width). No PCB layout changes are required. The part is electrically compatible across all specified operating conditions within the -40°C ~ 85°C temperature range.

Q: What is the functional difference between the 9-bit 74LVC823 and the 10-bit SN74LVC821ADGVR?

A: The SN74LVC821ADGVR provides one additional data bit (10 bits total) compared to the 9-bit configuration of the main part. Pin assignments differ to accommodate the additional bit. Substitution is valid only if the circuit design can utilize or ignore the extra bit without functional impact.

Q: Why do the Texas Instruments substitutes show lower clock frequency (150 MHz vs. 200 MHz)?

A: Clock frequency specifications reflect maximum rated operating frequency. The 150 MHz rating for Texas Instruments parts remains well above typical application requirements for D-type flip-flop logic. Both specifications ensure reliable operation within their respective temperature ranges. Application timing margins should be verified against actual circuit requirements.

Q: Are the 24-TSSOP and 24-TFSOP packages interchangeable?

A: No. While both are 24-pin packages with similar 0.173" (4.40mm) width, TSSOP and TFSOP have different pitch and pin spacing specifications. PCB footprints are not interchangeable. Verify the exact package requirement before selecting a substitute.

Q: What is the inventory status for high-volume production?

A: SN74LVC823APWR (Tape & Reel) shows the highest availability at 3300 pcs. SN74LVC823APWT (Tape & Reel) provides 2062 pcs. Both are suitable for automated assembly processes. The original 74LVC823ADB,112 (Tube format) shows 1041 pcs available.

Q: Does the reduced propagation delay in substitute parts affect circuit timing?

A: Reduced propagation delay (8ns or 7.3ns versus 10ns) improves timing margins and reduces setup/hold time violations. This change is beneficial for circuit reliability. No negative timing impact occurs when substituting with faster parts in standard logic applications.

Q: Are all listed parts suitable for new designs?

A: The original 74LVC823ADB,112 is marked "Not For New Designs." All Texas Instruments substitutes carry "Active" product status and are suitable for new designs. For new development, Texas Instruments alternatives are recommended to ensure long-term support and availability.