74VHC163MX Binary Counter IC - Equivalent & Substitute Parts

Part Overview

The 74VHC163MX is a 4-bit binary counter IC manufactured by onsemi, designed for synchronous counting applications with positive edge triggering. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74VHC163MX operates across a wide supply voltage range and maintains compatibility with standard logic families through its electrical characteristics.

Substiute Parts

74VHC163MX

onsemiIn Stock: 76274VHC163MX Datasheet

Current PartRFQ

SN74LV163ADR

Texas InstrumentsIn Stock: 4665SN74LV163ADR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VHC163MX is determined by the following critical parameters:

• Logic Function: Binary counter with 4-bit capacity, up-counting direction, and synchronous reset
• Trigger Mechanism: Positive edge triggering for clock input
• Electrical Compatibility: Supply voltage range of 2 V to 5.5 V and operating temperature range of -40°C to 85°C
• Physical Form Factor: 16-SOIC surface mount package with identical pin configuration
• Moisture Sensitivity: MSL 1 rating for unlimited shelf life

The SN74LV163ADR from Texas Instruments meets all these substitution criteria. Both parts share identical logic functionality, package specifications, and electrical operating ranges, enabling direct functional replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The SN74LV163ADR is the direct functional equivalent for the obsolete 74VHC163MX. Selection should be based on the following factors:

Product Status: The 74VHC163MX is obsolete, while the SN74LV163ADR maintains active production status from Texas Instruments, ensuring long-term availability and supply chain continuity.

Compliance & Certifications: The SN74LV163ADR carries RoHS3 compliance certification, meeting current environmental and regulatory standards. Both parts maintain REACH Unaffected status and EAR99 export classification.

Electrical Performance: While the SN74LV163ADR operates at a maximum count rate of 90 MHz compared to the 74VHC163MX at 125 MHz, both parts maintain identical supply voltage ranges and operating temperature specifications. Applications requiring count rates below 90 MHz experience no functional limitation.

Package Compatibility: Both parts use identical 16-SOIC surface mount packaging, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the SN74LV163ADR directly replace the 74VHC163MX without circuit modifications?

A: Yes. Both parts share identical pin configurations, package specifications, and electrical operating ranges (2 V to 5.5 V supply, -40°C to 85°C operating temperature). Direct substitution is supported for applications with count rate requirements up to 90 MHz.

Q: What is the significance of the 35 MHz difference in maximum count rate?

A: The 74VHC163MX supports 125 MHz operation, while the SN74LV163ADR supports 90 MHz. For applications requiring clock frequencies below 90 MHz, this difference is not a limiting factor. Applications with higher frequency requirements must retain the original part or identify alternative solutions.

Q: Are there packaging or moisture sensitivity differences between these parts?

A: No. Both parts use 16-SOIC surface mount packaging with identical physical dimensions (0.154" width, 3.90mm). Both carry MSL 1 (Unlimited) moisture sensitivity ratings, requiring no special handling differences.

Q: Why is the 74VHC163MX listed as obsolete?

A: Obsolete status indicates the manufacturer (onsemi) has discontinued production. The SN74LV163ADR from Texas Instruments provides functional continuity for existing designs and new applications.

Q: What compliance certifications apply to the SN74LV163ADR?

A: The SN74LV163ADR is RoHS3 compliant and maintains REACH Unaffected status, meeting current environmental regulations for electronic components.