74LVC823ADB,118 Equivalent & Substitute Parts

Part Overview

The 74LVC823ADB,118 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 supply voltage range of 1.65V to 3.6V with a maximum propagation delay of 10ns at 3.3V with 50pF load. The device is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance.

Substiute Parts

74LVC823ADB,118

Nexperia USA Inc.In Stock: 101474LVC823ADB,118 Datasheet

Current PartRFQ

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

Substitution eligibility for the 74LVC823ADB,118 is determined by the following critical parameters:

Primary Substitution Criteria:

• D-Type flip-flop architecture with tri-state, non-inverted output
• Supply voltage range: 1.65V ~ 3.6V
• Output drive capability: 24mA high and low
• Quiescent current: 10 µA
• Input capacitance: 5 pF
• Trigger type: Positive edge
• Mounting type: Surface mount
• RoHS3 compliance and REACH unaffected status

Secondary Considerations:

• Bit configuration (9-bit preferred for direct substitution; 10-bit acceptable with design verification)
• Package type (24-SSOP preferred; 24-TSSOP acceptable with PCB layout adjustment)
• Clock frequency (150 MHz minimum acceptable; 200 MHz preferred)
• Propagation delay (8ns acceptable; 10ns preferred)
• Operating temperature range (-40°C ~ 85°C minimum acceptable; -40°C ~ 125°C preferred)
• Product status (Active preferred over Not For New Designs)

Substitute parts are grouped into two categories: direct equivalents (same bit configuration and package) and functional alternatives (different bit configuration or package with compatible electrical characteristics).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Recommended Priority):

SN74LVC823ADBR is the primary substitute for the 74LVC823ADB,118. Both devices share identical bit configuration (9-bit), package type (24-SSOP), and electrical characteristics. The Texas Instruments part maintains active product status, ensuring long-term availability and supply chain continuity. The reduced propagation delay (8ns versus 10ns) and lower clock frequency (150 MHz versus 200 MHz) present no compatibility issues in applications designed for the original part. Operating temperature range reduction (-40°C ~ 85°C versus -40°C ~ 125°C) requires verification only in high-temperature applications exceeding 85°C.

Alternative Substitutes (Package Variants):

SN74LVC823APWR, SN74LVC823APWT, and SN74LVC823APW are functionally equivalent to the main part with identical 9-bit configuration and electrical specifications. These devices employ the 24-TSSOP package (0.173", 4.40mm width) instead of 24-SSOP, requiring PCB layout modification. The narrower package footprint may provide space advantages in compact designs. All three maintain active product status and ROHS3 compliance. SN74LVC823APWR offers the highest inventory availability (3,300 pieces) among all substitutes.

Functional Alternative (Different Bit Configuration):

SN74LVC821ADGVR is a 10-bit variant with 24-TFSOP package. While the additional bit configuration differs from the 9-bit main part, the electrical characteristics (supply voltage, output drive, quiescent current, input capacitance) remain compatible. This substitute is suitable only when the application can accommodate the 10-bit configuration without design modification. The improved propagation delay (7.3ns) and active product status support long-term availability.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC823ADBR directly replace 74LVC823ADB,118 without PCB modification?

A: Yes. SN74LVC823ADBR is a direct equivalent with identical package (24-SSOP), bit configuration (9-bit), and electrical specifications. No PCB layout changes are required. The part is pin-compatible and functionally interchangeable.

Q: What is the difference between 24-SSOP and 24-TSSOP packages?

A: Both are 24-pin surface-mount packages with different body widths. 24-SSOP measures 0.209" (5.30mm) width, while 24-TSSOP measures 0.173" (4.40mm) width. Pin pitch and electrical characteristics remain identical. Substitution requires PCB footprint adjustment.

Q: Is the operating temperature range reduction from -40°C ~ 125°C to -40°C ~ 85°C a concern?

A: The reduced range applies only to Texas Instruments substitutes. Applications operating below 85°C experience no impact. High-temperature applications exceeding 85°C require verification that the substitute part meets thermal requirements or selection of the original Nexperia part if available.

Q: Why is SN74LVC821ADGVR listed as a substitute if it has 10 bits instead of 9?

A: SN74LVC821ADGVR maintains all critical electrical parameters (supply voltage, output drive, quiescent current, propagation delay characteristics) required for functional substitution. The 10-bit configuration is compatible with applications that can accommodate the additional bit without design modification. This part is suitable as a substitute only when bit configuration flexibility exists.

Q: What is the significance of "Product Status: Active" versus "Not For New Designs"?

A: Active status indicates the part is in current production with guaranteed long-term availability and supply chain support. "Not For New Designs" indicates end-of-life status with limited availability. All Texas Instruments substitutes maintain active status, ensuring reliable sourcing for legacy system maintenance and new applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the regulatory compliance of the original 74LVC823ADB,118.

Q: Which substitute offers the best availability?

A: SN74LVC823APWR provides the highest inventory availability at 3,300 pieces in stock. This part is available in Tape & Reel packaging with 24-TSSOP configuration.