74LVC161PW,112 Equivalent & Substitute Parts

Part Overview

The 74LVC161PW,112 is a 4-bit binary counter IC manufactured by Nexperia USA Inc., designed for synchronous counting applications with positive edge triggering. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates across a wide supply voltage range of 1.2 V to 3.6 V and supports count rates up to 150 MHz in surface mount 16-TSSOP packaging.

Substiute Parts

74LVC161PW,112

Nexperia USA Inc.In Stock: 77474LVC161PW,112 Datasheet

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SN74LV161APW

Texas InstrumentsIn Stock: 3449SN74LV161APW Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC161PW,112 is determined by the following critical parameters:

Functional Equivalence: Binary counter architecture with 4-bit capacity, asynchronous reset, synchronous timing, and positive edge triggering.

Package Compatibility: 16-TSSOP surface mount package with identical 0.173" (4.40mm) width specification.

Electrical Compatibility: Supply voltage range, count rate capability, and operating temperature range must support the application requirements.

Compliance Requirements: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental standards.

The SN74LV161APW from Texas Instruments meets these substitution criteria within the allowed parameter tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

The SN74LV161APW serves as a functional substitute for the obsolete 74LVC161PW,112 based on matching package geometry, logic architecture, and compliance certifications. Both parts maintain ROHS3 compliance and MSL Level 1 ratings, ensuring compatibility with current manufacturing standards.

Application-specific selection depends on supply voltage requirements and maximum count rate specifications. The 74LVC161PW,112 operates at lower supply voltages (1.2 V minimum) with higher count rate capability (150 MHz), while the SN74LV161APW operates at higher supply voltages (2 V minimum) with lower count rate capability (95 MHz). The SN74LV161APW supports extended upper supply voltage operation to 5.5 V compared to the 3.6 V maximum of the original part.

Temperature range differences exist between the parts: the 74LVC161PW,112 operates to 125°C maximum, while the SN74LV161APW operates to 85°C maximum. Applications requiring operation above 85°C require confirmation of alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the SN74LV161APW directly replace the 74LVC161PW,112 in all applications?

A: Direct replacement is possible when application requirements fall within the SN74LV161APW specifications. Verify that maximum count rate does not exceed 95 MHz, operating temperature does not exceed 85°C, and supply voltage falls within the 2 V to 5.5 V range.

Q: What are the key differences between these parts?

A: The primary differences are count rate capability (150 MHz vs. 95 MHz), supply voltage range (1.2-3.6 V vs. 2-5.5 V), and maximum operating temperature (125°C vs. 85°C). Functional logic architecture and package form factor are identical.

Q: Are both parts available in the same packaging?

A: Both parts use 16-TSSOP surface mount packaging with identical 0.173" (4.40mm) width specification, ensuring mechanical compatibility on PCB layouts.

Q: Do both parts meet current environmental compliance standards?

A: Both parts are ROHS3 compliant and carry MSL Level 1 ratings, meeting current manufacturing and environmental standards.

Q: What should be considered when selecting between these parts?

A: Selection should be based on application requirements for count rate, supply voltage range, and maximum operating temperature. The SN74LV161APW is suitable for applications within its specified limits and offers higher supply voltage tolerance. Applications exceeding the SN74LV161APW specifications require alternative component evaluation.