SN74HC163D Equivalent & Substitute Parts

Part Overview

The SN74HC163D is a 4-bit binary counter IC manufactured by Texas Instruments, designed for synchronous counting applications with positive edge triggering. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The SN74HC163D operates across a wide supply voltage range of 2V to 6V and supports count rates up to 36 MHz, making it suitable for digital logic applications requiring reliable binary counting functionality. Due to its Last Time Buy status, identifying compatible substitute parts is essential for design continuity and long-term component availability.

Substiute Parts

SN74HC163D

Texas InstrumentsIn Stock: 2027SN74HC163D Datasheet

Current PartRFQ

SN74HC163DR

Texas InstrumentsIn Stock: 3264SN74HC163DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC163D is determined by strict equivalence across the following critical parameters:

• Logic Function: Binary counter with identical 4-bit configuration and positive edge triggering
• Electrical Specifications: Matching supply voltage range (2V to 6V), count rate (36 MHz), and synchronous reset/timing characteristics
• Package Compatibility: Identical 16-SOIC surface mount package with 0.154" width (3.90mm)
• Operating Conditions: Identical temperature range (-40°C to 85°C)
• Compliance Standards: ROHS3 compliance and equivalent regulatory certifications

The SN74HC163DR qualifies as a direct substitute based on complete alignment with all electrical, mechanical, and functional parameters. The primary distinction is packaging format: the SN74HC163D is supplied in Tube packaging (Last Time Buy status), while the SN74HC163DR is available in Cut Tape and Digi-Reel® formats with Active product status.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC163DR is the manufacturer-recommended substitute for the SN74HC163D. Both parts are manufactured by Texas Instruments and maintain identical electrical and functional specifications across all critical parameters. The SN74HC163D's Last Time Buy status necessitates transition to the SN74HC163DR for ongoing production and future component procurement.

The SN74HC163DR offers the advantage of Active product status, ensuring long-term availability and supply chain stability. Both parts maintain ROHS3 compliance and equivalent regulatory certifications, supporting environmental and compliance requirements. The packaging format difference (Tube versus Cut Tape/Digi-Reel®) does not affect functional performance and represents a standard industry variation in distribution methods.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC163DR be used as a direct replacement for the SN74HC163D in existing designs?

A: Yes. The SN74HC163DR is electrically and functionally identical to the SN74HC163D. All electrical specifications, timing characteristics, and package dimensions are equivalent. No circuit modifications are required for substitution.

Q: What is the difference between the SN74HC163D and SN74HC163DR?

A: The primary difference is product status and packaging format. The SN74HC163D is Last Time Buy (discontinued) and supplied in Tube packaging. The SN74HC163DR is Active (current production) and available in Cut Tape and Digi-Reel® formats. Electrical and functional specifications are identical.

Q: Are there any compatibility concerns when switching from SN74HC163D to SN74HC163DR?

A: No compatibility concerns exist. Both parts use the identical 16-SOIC package with matching pin configurations, electrical ratings, and operating characteristics. PCB layouts and circuit designs require no modification.

Q: Why is the SN74HC163D classified as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. Existing inventory is available for a limited time, after which the part will no longer be supplied. The SN74HC163DR represents the active production alternative.

Q: What supply voltage range does the SN74HC163DR support?

A: The SN74HC163DR operates across a supply voltage range of 2V to 6V, identical to the SN74HC163D. This wide voltage range supports both 3.3V and 5V logic systems.

Q: Is the SN74HC163DR suitable for high-speed applications?

A: Yes. The SN74HC163DR supports count rates up to 36 MHz, making it suitable for digital logic applications requiring synchronous binary counting at standard TTL/CMOS speeds.