SN74F38DG4 Equivalent & Substitute Parts

Part Overview

The SN74F38DG4 is a NAND Gate IC with 4 channels and 2 inputs per channel, featuring open collector output configuration in a 14-SOIC surface mount package. Manufactured by Texas Instruments, this component operates within the 4.5V to 5.5V supply voltage range and is designed for logic-level switching applications requiring open collector output characteristics.

The SN74F38DG4 carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this logic gate configuration.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Features	Open Collector
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	-, 64mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	12.5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Series	74F
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SN74F38DG4 are determined by strict equivalence across the following critical parameters:

Logic Type: NAND Gate
Number of Circuits: 4
Number of Inputs: 2
Features: Open Collector output
Voltage - Supply: 4.5V ~ 5.5V
Current - Output High, Low: -, 64mA
Input Logic Level - Low: 0.8V
Input Logic Level - High: 2V
Max Propagation Delay @ V, Max CL: 12.5ns @ 5V, 50pF
Operating Temperature: 0°C ~ 70°C
Series: 74F
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts may differ in packaging format (tube, tape & reel) and package case dimensions while maintaining identical electrical performance and functional characteristics. Product status variations reflect current market availability and manufacturing lifecycle stages.

Parameter Comparison

Parameter	SN74F38DG4	SN74F38NSR	SN74F38D
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	4	4	4
Number of Inputs	2	2	2
Features	Open Collector	Open Collector	Open Collector
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	-, 64mA	-, 64mA	-, 64mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ V, Max CL	12.5ns @ 5V, 50pF	12.5ns @ 5V, 50pF	12.5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Supplier Device Package	14-SOIC	14-SO	14-SOIC
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.209", 5.30mm Width)	14-SOIC (0.154", 3.90mm Width)
Packaging Format	Tube	Tape & Reel (TR)	Tube
Product Status	Obsolete	Active	Last Time Buy
Series	74F	74F	74F
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74F38NSR is the manufacturer-recommended substitute. This part maintains full electrical and functional equivalence to the SN74F38DG4 while carrying Active product status, ensuring ongoing availability and supply chain support. The SN74F38NSR is supplied in Tape & Reel packaging format, suitable for automated assembly processes. Package case dimensions differ (0.209" versus 0.154" width), requiring verification of PCB layout compatibility before implementation.

SN74F38D is a parametric equivalent offering identical electrical specifications and functional performance. This part carries Last Time Buy status, indicating limited remaining availability. The SN74F38D is supplied in Tube packaging format and maintains the same package case dimensions as the original SN74F38DG4 (0.154" width), providing direct mechanical compatibility.

Both substitute parts maintain ROHS3 compliance and MSL Level 1 rating, consistent with the original component's environmental and regulatory certifications.

Frequently Asked Questions (FAQ)

Q: Can SN74F38NSR be used as a direct replacement for SN74F38DG4?

A: SN74F38NSR is electrically and functionally equivalent to SN74F38DG4. However, the package case width differs (0.209" versus 0.154"), requiring PCB layout verification. Packaging format differs (Tape & Reel versus Tube), which may affect procurement and handling procedures.

Q: What is the difference between SN74F38D and SN74F38NSR?

A: Both parts are electrically identical. SN74F38D is supplied in Tube packaging with 0.154" package width, matching the original SN74F38DG4 dimensions. SN74F38NSR is supplied in Tape & Reel packaging with 0.209" package width. SN74F38NSR carries Active product status, while SN74F38D carries Last Time Buy status.

Q: Why is the SN74F38DG4 marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active alternatives such as SN74F38NSR are available to support ongoing design and production requirements.

Q: Are all three parts ROHS3 compliant?

A: Yes. SN74F38DG4, SN74F38NSR, and SN74F38D are all ROHS3 compliant with MSL Level 1 rating.

Q: What packaging considerations apply when selecting a substitute?

A: SN74F38NSR uses Tape & Reel packaging suitable for high-volume automated assembly. SN74F38D uses Tube packaging suitable for lower-volume or manual assembly processes. Package case width differences (0.209" for SN74F38NSR versus 0.154" for SN74F38D and SN74F38DG4) must be verified against PCB footprint specifications.

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