SN74HC05D Equivalent & Substitute Parts

Part Overview

The SN74HC05D is a 6-channel inverter IC with open drain outputs in a 14-SOIC surface mount package, manufactured by Texas Instruments. This logic component is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates across a 2V to 6V supply voltage range and is suitable for general-purpose digital 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 of the SN74HC05D is determined by strict equivalence across the following critical parameters:

Logic type and function: 6-channel inverter with open drain output
Electrical specifications: 2V ~ 6V supply voltage, 5.2mA output current, matching input logic levels
Package compatibility: 14-SOIC surface mount form factor
Compliance certifications: ROHS3 compliance and REACH unaffected status

The substitute parts listed maintain these core specifications while differing in secondary characteristics such as quiescent current, propagation delay, operating temperature range, and packaging format (tube, cut tape, or tape & reel). These variations do not affect functional interchangeability in standard applications.

Parameter Comparison

Parameter	SN74HC05D (Main)	SN74HC05DR	74HC05S14-13	MC74HC05ADG	MC74HC05ADR2G
Manufacturer	Texas Instruments	Texas Instruments	Diodes Incorporated	onsemi	onsemi
Logic Type	Inverter	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6	6
Features	Open Drain	Open Drain	Open Drain	Open Drain	Open Drain
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA	20 µA	1 µA	1 µA
Current - Output High, Low	-, 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
Input Logic Level - High	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	15ns	15ns	15ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Product Status	Discontinued	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts maintain full functional equivalence to the SN74HC05D across core electrical and mechanical specifications. Selection among substitutes should be based on the following factors:

Product Status: SN74HC05DR, 74HC05S14-13, MC74HC05ADG, and MC74HC05ADR2G are all active products with confirmed inventory availability, making them suitable for immediate procurement.

Compliance: All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original part.

Packaging Format: SN74HC05DR is available in cut tape and digi-reel format; 74HC05S14-13 is supplied in tape & reel; MC74HC05ADG is supplied in tube; MC74HC05ADR2G is supplied in tape & reel. Selection depends on assembly line requirements and order quantities.

Operating Temperature Range: MC74HC05ADG and MC74HC05ADR2G offer extended temperature range (-55°C ~ 125°C) compared to the original part (-40°C ~ 85°C), providing additional margin for demanding thermal environments.

Propagation Delay: 74HC05S14-13, MC74HC05ADG, and MC74HC05ADR2G provide 15ns propagation delay versus 20ns for the original part, offering improved timing performance.

Frequently Asked Questions (FAQ)

Q: Are all listed substitute parts pin-compatible with the SN74HC05D?

A: Yes. All substitute parts maintain the same 14-SOIC package footprint and pinout configuration, ensuring direct PCB compatibility without layout modifications.

Q: What is the primary reason for substitution?

A: The SN74HC05D is discontinued at DiGi Electronics. The listed substitutes are active products from established manufacturers that maintain electrical and mechanical equivalence.

Q: Can I use MC74HC05ADG or MC74HC05ADR2G in applications requiring the original -40°C ~ 85°C temperature range?

A: Yes. These parts are rated to -55°C ~ 125°C, which encompasses the original operating range. They are suitable for all applications within the original temperature specification.

Q: What is the difference between SN74HC05DR and SN74HC05D?

A: Both are Texas Instruments products with identical electrical specifications. The primary difference is packaging format: SN74HC05D is supplied in tube, while SN74HC05DR is supplied in cut tape and digi-reel. SN74HC05DR is currently active, while SN74HC05D is discontinued.

Q: Does the 74HC05S14-13 from Diodes Incorporated have any compatibility concerns?

A: No. The 74HC05S14-13 maintains full electrical equivalence. The only difference is quiescent current (20 µA versus 2 µA), which is negligible in most applications and may be beneficial in low-power designs due to improved noise immunity.

Q: Which substitute offers the best performance improvement?

A: 74HC05S14-13, MC74HC05ADG, and MC74HC05ADR2G all provide 15ns propagation delay compared to 20ns for the original part, representing a 25% improvement in switching speed.

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