SN74HC05PWT Equivalent & Substitute Parts

Part Overview

The SN74HC05PWT is a 6-channel inverter logic IC with open-drain outputs in a 14-TSSOP surface mount package, manufactured by Texas Instruments. This part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The 74HC05 series provides standard inverter functionality across the 2V to 6V supply voltage range with open-drain output configuration suitable for bus-line applications and level shifting.

Substiute Parts

SN74HC05PWT

Texas InstrumentsIn Stock: 1240SN74HC05PWT Datasheet

Current PartRFQ

SN74HC05PWR

Texas InstrumentsIn Stock: 3402SN74HC05PWR Datasheet

Parametric EquivalentRFQ

74HC05T14-13

Diodes IncorporatedIn Stock: 3903774HC05T14-13 Datasheet

MFR RecommendedRFQ

MC74HC05ADTG

onsemiIn Stock: 3525MC74HC05ADTG Datasheet

MFR RecommendedRFQ

MC74HC05ADTR2G

onsemiIn Stock: 3564MC74HC05ADTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HC05PWT is determined by strict equivalence across the following critical parameters:

Core Functional Parameters:

• Logic Type: Inverter (6-channel, 1-input per channel)
• Features: Open Drain output configuration
• Package: 14-TSSOP form factor with identical 0.173" width and 4.40mm dimensions
• Voltage Supply Range: 2V ~ 6V
• Input/Output Logic Levels: Matching threshold specifications
• RoHS3 Compliance and MSL Level 1 rating

Performance Tolerance Parameters:

• Quiescent Current: Maximum 20 µA (original specification 2 µA; substitutes up to 20 µA remain functionally equivalent)
• Output Current: 5.2mA (fixed across all equivalents)
• Propagation Delay: 15ns to 20ns @ 6V, 50pF (all within acceptable logic timing)
• Operating Temperature: -40°C minimum; upper range extends to 125°C for certain substitutes

All listed substitute parts maintain these critical parameters within acceptable engineering tolerances for direct replacement in the 74HC05 logic family.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - SN74HC05PWR (Texas Instruments): The SN74HC05PWR is the direct parametric equivalent from the original manufacturer. It maintains identical electrical specifications and operating temperature range (-40°C ~ 85°C) as the discontinued SN74HC05PWT. This part is currently in active production status with higher inventory availability (3300 pcs), making it the preferred choice for direct replacement in existing designs. Both parts share identical quiescent current (2 µA) and propagation delay characteristics.

Secondary Substitutes - 74HC05T14-13 (Diodes Incorporated), MC74HC05ADTG (onsemi), MC74HC05ADTR2G (onsemi): These alternatives provide functional equivalence with enhanced performance characteristics. The Diodes Incorporated 74HC05T14-13 offers improved propagation delay (15ns vs. 20ns) and extended operating temperature range (-40°C ~ 125°C). The onsemi variants (MC74HC05ADTG and MC74HC05ADTR2G) provide superior quiescent current performance (1 µA) and the widest operating temperature range (-55°C ~ 125°C), with the TR2G variant in Tape & Reel packaging matching the original packaging format.

Compliance and Certification: All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements. No additional qualification is required for substitution based on regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can SN74HC05PWR directly replace SN74HC05PWT in production? A: Yes. The SN74HC05PWR is a parametric equivalent with identical electrical specifications, supply voltage range (2V ~ 6V), logic thresholds, output current (5.2mA), and operating temperature range (-40°C ~ 85°C). Both are manufactured by Texas Instruments and share the same 14-TSSOP package dimensions.

Q: What is the difference between the onsemi MC74HC05ADTG and MC74HC05ADTR2G? A: Both parts are electrically identical. The primary difference is packaging format: MC74HC05ADTG is supplied in Tube packaging, while MC74HC05ADTR2G is supplied in Tape & Reel (TR) format. For automated assembly processes, the TR variant is recommended.

Q: Are the onsemi substitutes compatible with the original design specifications? A: Yes. The MC74HC05ADTG and MC74HC05ADTR2G maintain all critical functional parameters: 6-channel inverter configuration, open-drain outputs, 2V ~ 6V supply voltage, matching input/output logic levels, and 5.2mA output current. The extended operating temperature range (-55°C ~ 125°C) and improved quiescent current (1 µA) represent performance enhancements rather than deviations.

Q: Does the 74HC05T14-13 from Diodes Incorporated meet the original specifications? A: Yes. The 74HC05T14-13 maintains functional equivalence across all critical parameters. It offers faster propagation delay (15ns vs. 20ns @ 6V, 50pF) and extended operating temperature range (-40°C ~ 125°C), both of which are compatible with designs specified for the SN74HC05PWT.

Q: What is the significance of the 14-TSSOP package specification? A: The 14-TSSOP (Thin Shrink Small Outline Package) with 0.173" width and 4.40mm dimensions is a standard surface mount package. All listed substitutes use this identical package, ensuring PCB footprint compatibility and eliminating the need for layout modifications.

Q: Are there any quiescent current considerations when substituting parts? A: The original SN74HC05PWT specifies 2 µA maximum quiescent current. The 74HC05T14-13 allows up to 20 µA, while the onsemi variants specify 1 µA. For low-power applications, the onsemi parts (1 µA) or the original TI part (2 µA) are preferred. The Diodes part (20 µA) remains functionally equivalent but may impact total system power consumption in battery-powered designs.

Q: Can these parts be used interchangeably in existing PCB assemblies? A: Yes. All substitute parts use the identical 14-TSSOP package with matching pin assignments and electrical characteristics. No PCB modifications, rework, or design changes are required for substitution.