SN74HC193PW Equivalent & Substitute Parts

Part Overview

The SN74HC193PW is a 4-bit binary counter logic IC manufactured by Texas Instruments, housed in a 16-TSSOP surface mount package. This counter supports both up and down counting with asynchronous reset and synchronous timing, operating at a maximum count rate of 24 MHz across a supply voltage range of 2 V to 6 V. The device is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain component availability for new production runs and field replacements.

Substiute Parts

SN74HC193PW

Texas InstrumentsIn Stock: 2236SN74HC193PW Datasheet

Current PartRFQ

SN74HC193PWR

Texas InstrumentsIn Stock: 5465SN74HC193PWR Datasheet

MFR RecommendedRFQ

74HC193PW,118

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC193PW is determined by strict alignment with the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Logic Type: Binary Counter (4-bit)
• Direction: Up and Down counting capability
• Package / Case: 16-TSSOP form factor
• Mounting Type: Surface Mount
• Reset Type: Asynchronous
• Timing: Synchronous
• Voltage - Supply: 2 V ~ 6 V range
• RoHS Status: ROHS3 Compliant

Acceptable Variation Parameters:

• Count Rate: Minimum 24 MHz (higher rates are acceptable)
• Operating Temperature: Minimum -40°C to 85°C range (extended ranges are acceptable)
• Packaging Format: Tube or Tape & Reel (both surface mount formats)
• Manufacturer: Different manufacturers producing identical logic specifications

The identified substitute parts meet all critical parameters while maintaining functional and physical compatibility with the original SN74HC193PW design.

Parameter Comparison

Engineering Selection Recommendations

SN74HC193PWR (Texas Instruments): This part is the direct manufacturer equivalent, produced by the original manufacturer Texas Instruments with Active product status. It maintains identical electrical specifications and package form factor, differing only in packaging format (Tape & Reel versus Tube). This substitute is suitable for production environments requiring tape and reel packaging.

74HC193PW,118 (Nexperia USA Inc.): This part is a cross-manufacturer substitute produced by Nexperia USA Inc. with Active product status. It meets all critical electrical and mechanical parameters while offering enhanced performance specifications: 49 MHz count rate (versus 24 MHz) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). Both enhancements provide design margin without introducing incompatibility. This substitute is suitable for applications requiring higher performance headroom or extended temperature operation.

Both substitute parts carry ROHS3 compliance and are available in higher inventory quantities than the original Last Time Buy part, supporting long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SN74HC193PWR be used as a direct replacement for SN74HC193PW?

A: Yes. Both parts are manufactured by Texas Instruments and share identical electrical specifications, logic function, and 16-TSSOP package form factor. The only difference is packaging format: SN74HC193PWR is supplied in Tape & Reel format while SN74HC193PW is supplied in Tube format. Electrical performance and PCB mounting are equivalent.

Q: What are the differences between the Texas Instruments and Nexperia versions?

A: The 74HC193PW,118 (Nexperia) offers higher count rate performance (49 MHz versus 24 MHz) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). All other electrical parameters, logic function, and 16-TSSOP package dimensions are identical. The Nexperia part provides additional design margin for high-speed or high-temperature applications.

Q: Are these parts pin-compatible?

A: Yes. All three parts use the 16-TSSOP package with identical pinout, electrical function, and signal definitions. No circuit redesign is required for substitution.

Q: Which substitute should I select for new production?

A: Selection depends on application requirements and supply chain strategy. SN74HC193PWR is recommended for standard applications requiring the original manufacturer's part. The 74HC193PW,118 is recommended when higher performance specifications or extended temperature operation provide design benefits, or when Nexperia supply availability is superior.

Q: Are all parts RoHS compliant?

A: Yes. All three parts carry ROHS3 compliance certification, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the significance of the Last Time Buy status on the original part?

A: Last Time Buy indicates the SN74HC193PW is discontinued and no longer in production. Using an Active substitute part (SN74HC193PWR or 74HC193PW,118) ensures long-term component availability and supply chain continuity for future production runs and field service requirements.