74LV393D,112 Equivalent & Substitute Parts

Part Overview

The 74LV393D,112 is a binary counter IC manufactured by Nexperia USA Inc., featuring two 4-bit negative edge-triggered counter elements in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a supply voltage range of 1 V to 3.6 V with a maximum count rate of 20 MHz and is fully RoHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

74LV393D,112

Nexperia USA Inc.In Stock: 79274LV393D,112 Datasheet

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SN74LV393AD

Texas InstrumentsIn Stock: 1395SN74LV393AD Datasheet

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SN74LV393ADR

Texas InstrumentsIn Stock: 2090SN74LV393ADR Datasheet

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SN74LV393ANSR

Texas InstrumentsIn Stock: 3362SN74LV393ANSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74LV393D,112 is determined by the following critical parameters:

Functional Equivalence: All substitute parts maintain the same base product number (74LV393), logic type (binary counter), element configuration (2 elements, 4 bits each), trigger mechanism (negative edge), and reset type (asynchronous).

Package Compatibility: Substitute parts must use either 14-SOIC (0.154", 3.90mm Width) or 14-SO (0.209", 5.30mm Width) packages to ensure mechanical and electrical compatibility with existing PCB layouts.

Electrical Parameters: Substitute parts must support the required supply voltage range and operating temperature specifications. Parts with extended voltage ranges (2 V ~ 5.5 V) and higher count rates (70 MHz) are electrically compatible and provide enhanced performance margins.

Compliance Requirements: All substitute parts must maintain RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1) to meet regulatory and manufacturing standards.

Parameter Comparison

Engineering Selection Recommendations

SN74LV393ADR (Texas Instruments) is the primary substitute for the 74LV393D,112. This part maintains identical package dimensions (14-SOIC, 0.154", 3.90mm Width), carries active product status, and is available in Tape & Reel packaging suitable for automated assembly. The extended supply voltage range (2 V ~ 5.5 V) and higher count rate (70 MHz) provide performance headroom while remaining fully backward compatible at the functional level.

SN74LV393ANSR (Texas Instruments) serves as an alternative substitute with active product status and high inventory availability. This part uses a wider 14-SO package (0.209", 5.30mm Width), which requires PCB layout verification for mechanical fit but maintains full electrical compatibility.

SN74LV393AD (Texas Instruments) is available but carries discontinued status at DiGi Electronics, making it less suitable for long-term production planning despite tube packaging availability.

All three Texas Instruments substitutes maintain RoHS3 compliance, unlimited moisture sensitivity rating, and identical functional specifications (2 elements, 4 bits per element, negative edge trigger, asynchronous reset).

Frequently Asked Questions (FAQ)

Q: Can SN74LV393ADR directly replace 74LV393D,112 on existing PCBs?

A: Yes. Both parts use identical 14-SOIC packages (0.154", 3.90mm Width) with the same pin configuration and functional specifications. No PCB modifications are required.

Q: What is the difference between SN74LV393ADR and SN74LV393ANSR?

A: The primary difference is package width. SN74LV393ADR uses a 14-SOIC package at 0.154" (3.90mm) width, while SN74LV393ANSR uses a 14-SO package at 0.209" (5.30mm) width. Both are functionally equivalent but require different PCB footprints. Verify your PCB layout before selecting.

Q: Why do the Texas Instruments parts have higher count rates (70 MHz vs. 20 MHz)?

A: The higher count rate specification represents enhanced performance capability. The 74LV393D,112 operates at 20 MHz maximum, while Texas Instruments substitutes are rated to 70 MHz. Both will function correctly in applications designed for the original 20 MHz specification.

Q: Are there voltage supply differences between the main part and substitutes?

A: Yes. The 74LV393D,112 operates at 1 V ~ 3.6 V, while Texas Instruments substitutes operate at 2 V ~ 5.5 V. If your design uses supply voltages below 2 V, the original Nexperia part is required. For standard 3.3 V or 5 V systems, Texas Instruments substitutes are fully compatible.

Q: What is the operating temperature difference?

A: The 74LV393D,112 operates to 125°C maximum, while Texas Instruments substitutes operate to 85°C maximum. For applications requiring operation above 85°C, the original Nexperia part is necessary.

Q: Which substitute has the best availability?

A: SN74LV393ANSR has the highest inventory (3331 Pcs), followed by SN74LV393ADR (2000 Pcs). Both are active products with reliable supply chains.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of the original 74LV393D,112.