74F04SC Equivalent & Substitute Parts

Part Overview

The 74F04SC is a 6-channel inverter logic IC manufactured by onsemi in a 14-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74F04 series represents a standard TTL inverter function with consistent electrical characteristics across qualified manufacturers and packaging variants.

Key Parameters

Parameter	Specification
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	1mA, 20mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	14-SOIC
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74F04SC is determined by matching the following critical parameters: logic type (inverter), circuit count (6 channels), input count (1 per channel), supply voltage range (4.5V ~ 5.5V), output current specifications (1mA high, 20mA low), input logic thresholds (0.8V low, 2V high), propagation delay (5ns @ 5V, 50pF), operating temperature range (0°C ~ 70°C), and surface mount configuration. Package variants within the 14-SOIC family are acceptable substitutes when these electrical parameters are maintained.

The substitute parts are categorized as follows:

Direct Manufacturer Equivalent (SN74F04DR): Identical electrical specifications and 14-SOIC package, active product status with Tape & Reel packaging
Similar Manufacturer Part (SN74F04NSR): Matches all electrical parameters with 14-SO package variant (0.209" width vs. 0.154" width), active product status
Parametric Equivalent (SN74F04D): Identical electrical specifications and 14-SOIC package, Last Time Buy status with Tube packaging

Parameter Comparison

Parameter	74F04SC (onsemi)	SN74F04DR (TI)	SN74F04NSR (TI)	SN74F04D (TI)
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Last Time Buy
Logic Type	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6
Number of Inputs	1	1	1	1
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	1mA, 20mA	1mA, 20mA	1mA, 20mA	1mA, 20mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V
Max Propagation Delay @ V, Max CL	5ns @ 5V, 50pF	5ns @ 5V, 50pF	5ns @ 5V, 50pF	5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SO (0.209", 5.30mm)	14-SOIC (0.154", 3.90mm)
RoHS Status	REACH Unaffected	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74F04DR (Texas Instruments) is the primary substitute for the obsolete 74F04SC. This part maintains active product status, offers ROHS3 compliance, and is available in Tape & Reel packaging suitable for automated assembly. The identical 14-SOIC package and electrical specifications ensure direct functional replacement with no design modifications required.

SN74F04D (Texas Instruments) serves as an alternative parametric equivalent with identical electrical performance and package dimensions. However, this part carries Last Time Buy status, indicating limited future availability. Selection of this part should be reserved for applications where Tube packaging is preferred or where SN74F04DR availability is constrained.

SN74F04NSR (Texas Instruments) is functionally equivalent with all electrical parameters matching the original specification. The 14-SO package variant features a wider body (0.209" vs. 0.154"), which may require PCB layout verification for space-constrained applications. This part is active and ROHS3 compliant. Selection should account for physical package dimensions relative to existing board designs.

Frequently Asked Questions (FAQ)

Q: Can SN74F04NSR be used as a direct replacement for 74F04SC on existing PCBs?

A: SN74F04NSR is electrically equivalent but uses a 14-SO package with 0.209" width compared to the 14-SOIC package at 0.154" width. PCB footprint compatibility must be verified before substitution. If the PCB is designed for the narrower 14-SOIC package, SN74F04NSR may not fit without layout modifications.

Q: What is the difference between SN74F04DR and SN74F04D?

A: Both parts are electrically identical with matching 14-SOIC packages and specifications. The primary difference is product status: SN74F04DR is active with Tape & Reel packaging, while SN74F04D is Last Time Buy status with Tube packaging. For new designs and ongoing production, SN74F04DR is the recommended choice.

Q: Are all substitute parts ROHS3 compliant?

A: SN74F04DR, SN74F04NSR, and SN74F04D are all ROHS3 compliant. The original 74F04SC is listed as REACH Unaffected. All parts meet current environmental compliance standards.

Q: What packaging options are available for 74F04 inverter ICs?

A: The substitute parts are available in Tape & Reel (SN74F04DR, SN74F04NSR) and Tube (SN74F04D) packaging. Tape & Reel is standard for automated assembly processes, while Tube packaging is used for manual assembly or lower-volume applications.

Q: Can these parts be used interchangeably in high-speed logic circuits?

A: All substitute parts maintain the 5ns maximum propagation delay specification at 5V with 50pF load. Electrical performance is equivalent across all qualified substitutes, making them suitable for applications with identical timing requirements to the original 74F04SC.

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