SN74HC05DT Equivalent & Substitute Parts

Part Overview

The SN74HC05DT is a 6-channel inverter logic IC with open-drain outputs in a 14-SOIC surface mount package, manufactured by Texas Instruments. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The SN74HC05DT operates across a 2V to 6V supply range and is suitable for general-purpose logic inversion applications requiring open-drain output capability.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Open Drain
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	-, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	20ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74HC05DT is determined by strict equivalence across the following parameters:

Logic Type: Inverter with 6 channels, 1 input per channel
Features: Open-drain output configuration
Voltage Supply Range: 2V ~ 6V minimum requirement
Package: 14-SOIC surface mount form factor
Input/Output Logic Levels: Matching threshold specifications
Compliance: ROHS3 and REACH compliance status

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in quiescent current, propagation delay, and operating temperature range are noted but do not prevent functional substitution when the application requirements fall within the substitute part's specifications.

Parameter Comparison

Parameter	SN74HC05DT	SN74HC05DR	SN74HC05DRG4	74HC05S14-13	MC74HC05ADG	MC74HC05ADR2G
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Diodes Incorporated	onsemi	onsemi
Logic Type	Inverter	Inverter	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6	6	6
Features	Open Drain	Open Drain	Open Drain	Open Drain	Open Drain	Open Drain
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA	2 µA	20 µA	1 µA	1 µA
Current - Output High, Low	-, 5.2mA	-, 5.2mA	-, 5.2mA	-, 5.2mA	-, 5.2mA	-, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	20ns	20ns	20ns	15ns	15ns	15ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Packaging Type	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Product Status	Discontinued at DiGi Electronics	Active	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For applications currently using the SN74HC05DT, the following substitutes are available based on product status and compliance:

Active Status Substitutes (Recommended for New Designs):

SN74HC05DR (Texas Instruments): Active product with identical electrical specifications and 14-SOIC packaging. Available in Cut Tape and Digi-Reel packaging formats.
74HC05S14-13 (Diodes Incorporated): Active product with extended operating temperature range (-40°C ~ 125°C) and improved propagation delay (15ns). Highest inventory availability at 12,800 pieces.
MC74HC05ADG (onsemi): Active product with extended operating temperature range (-55°C ~ 125°C), lower quiescent current (1 µA), and improved propagation delay (15ns). Available in Tube packaging.
MC74HC05ADR2G (onsemi): Active product with extended operating temperature range (-55°C ~ 125°C), lower quiescent current (1 µA), and improved propagation delay (15ns). Available in Tape & Reel packaging.

Discontinued Status Substitutes (Available for Existing Stock Replacement):

SN74HC05DRG4 (Texas Instruments): Discontinued at DiGi Electronics but maintains identical electrical specifications to the original part. Available in Tape & Reel packaging with 4,568 pieces in stock.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with existing supply chain and manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SN74HC05DT with any of these parts without circuit modification?

A: Yes. All listed substitute parts maintain identical logic type (6-channel inverter with open-drain output), voltage supply range (2V ~ 6V), input/output logic levels, and 14-SOIC package form factor. No circuit modifications are required for functional substitution.

Q: What is the difference between the Texas Instruments and onsemi substitutes?

A: The onsemi parts (MC74HC05ADG and MC74HC05ADR2G) offer extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C), lower quiescent current (1 µA versus 2 µA), and faster propagation delay (15ns versus 20ns). These represent performance improvements suitable for demanding applications. The Texas Instruments SN74HC05DR maintains identical specifications to the original part.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (Tape & Reel, Cut Tape, Digi-Reel, or Tube) affects only handling, storage, and supply chain logistics. Electrical performance and pin configuration remain identical across all packaging formats for the same part number base.

Q: Which substitute has the best availability?

A: The 74HC05S14-13 from Diodes Incorporated has the highest inventory at 12,800 pieces in stock. This part is also active status, making it suitable for long-term production requirements.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, maintaining compatibility with environmental and regulatory requirements.

Q: What is the significance of the propagation delay difference between 20ns and 15ns?

A: The 15ns propagation delay (offered by 74HC05S14-13, MC74HC05ADG, and MC74HC05ADR2G) represents a 25% improvement in switching speed compared to the 20ns specification of the SN74HC05DT. This improvement is beneficial for timing-critical applications but does not affect functional compatibility in standard logic applications.

Q: Can I use the SN74HC05DRG4 for new production?

A: The SN74HC05DRG4 is discontinued at DiGi Electronics but maintains identical electrical specifications to the SN74HC05DT. It is suitable for replacement in existing production runs where stock is available, but active-status alternatives (SN74HC05DR, 74HC05S14-13, MC74HC05ADG, MC74HC05ADR2G) are recommended for new designs to ensure long-term supply continuity.

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