74HC193DB,118 Binary Counter IC - Equivalent & Substitute Parts

Part Overview

The 74HC193DB,118 is a 4-bit binary counter IC manufactured by Nexperia USA Inc., designed for synchronous up/down counting applications. This component features positive edge triggering, asynchronous reset, and operates across a 2V to 6V supply range with a maximum count rate of 49 MHz. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

74HC193DB,118

Nexperia USA Inc.In Stock: 98674HC193DB,118 Datasheet

Current PartRFQ

74HC193PW,118

Nexperia USA Inc.In Stock: 72474HC193PW,118 Datasheet

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SN74HC193PW

Texas InstrumentsIn Stock: 2236SN74HC193PW Datasheet

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SN74HC193PWR

Texas InstrumentsIn Stock: 5465SN74HC193PWR Datasheet

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SN74HC193PWT

Texas InstrumentsIn Stock: 723SN74HC193PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC193DB,118 is determined by the following critical parameters:

Functional Equivalence: All substitute parts maintain the 74HC binary counter architecture with 4-bit capacity, up/down counting direction, asynchronous reset, synchronous timing, and positive edge triggering.

Electrical Compatibility: Supply voltage range (2V ~ 6V), logic family (74HC series), and trigger characteristics must remain consistent across substitutes.

Package Compatibility: The original 16-SSOP package may be substituted with 16-TSSOP variants, as both are surface-mount packages with compatible pinouts and mechanical footprints suitable for standard PCB assembly processes.

Performance Considerations: Count rate specifications vary among substitutes. The original part specifies 49 MHz maximum; substitute parts from Texas Instruments specify 24 MHz. This difference reflects manufacturing process variations and must be evaluated against circuit timing requirements.

Product Status: Active and Last Time Buy alternatives are preferred over discontinued or obsolete designations for long-term supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - 74HC193PW,118 (Nexperia USA Inc.): This part maintains full electrical and thermal compatibility with the original 74HC193DB,118, including the 49 MHz count rate and -40°C to 125°C operating range. The transition from 16-SSOP to 16-TSSOP packaging is mechanically compatible for standard surface-mount assembly. Active product status ensures supply chain continuity. This substitute is recommended for designs requiring maximum performance retention.

Secondary Substitute - SN74HC193PWR (Texas Instruments): This part provides active product status with established supply availability (5400 pcs in stock). The 16-TSSOP package is compatible with standard PCB assembly processes. The reduced count rate specification (24 MHz versus 49 MHz) and narrower operating temperature range (-40°C to 85°C) must be evaluated against circuit requirements. This substitute is suitable for applications where the specified performance parameters are adequate.

Alternative Substitute - SN74HC193PW (Texas Instruments): Available in Tube packaging with Last Time Buy status. Electrical specifications match SN74HC193PWR. This option provides supply availability but with limited long-term procurement viability due to product status classification.

Not Recommended - SN74HC193PWT (Texas Instruments): Discontinued at DiGi Electronics. While electrically compatible, the discontinued status presents supply chain risk and is not recommended for new designs or ongoing production.

Frequently Asked Questions (FAQ)

Q: Can the 74HC193DB,118 be directly replaced with 74HC193PW,118?

A: Yes. Both parts are 4-bit binary counters with identical functional specifications, electrical parameters, and operating ranges. The package transition from 16-SSOP to 16-TSSOP is mechanically compatible for surface-mount assembly. Pin configuration and signal timing remain consistent.

Q: What is the difference between 16-SSOP and 16-TSSOP packages?

A: Both are 16-pin surface-mount packages with compatible pinouts. The 16-SSOP (0.209" width) and 16-TSSOP (0.173" width) differ in body width. Standard PCB assembly equipment accommodates both package types. Footprint design must match the selected package variant.

Q: Can Texas Instruments SN74HC193 parts substitute for Nexperia 74HC193 parts?

A: Functional substitution is possible with electrical compatibility verification. Texas Instruments parts specify 24 MHz maximum count rate versus 49 MHz for Nexperia parts. Operating temperature range is narrower (-40°C to 85°C versus -40°C to 125°C). These differences must be evaluated against specific circuit timing and thermal requirements.

Q: Why is the 74HC193DB,118 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active alternatives from the same or compatible manufacturers are available to support existing designs and new applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, consistent with the original part specifications.

Q: Which substitute offers the best long-term supply availability?

A: SN74HC193PWR (Texas Instruments) is classified as Active with 5400 pcs in stock, providing the strongest supply chain position. 74HC193PW,118 (Nexperia USA Inc.) is also Active with 645 pcs available.