SN74HCS137DR Equivalent & Substitute Parts

Part Overview

The SN74HCS137DR is a 3-to-8 line decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments. This device operates as a single 1 x 3:8 decoder circuit in a 16-SOIC surface mount package. The part is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical performance, packaging, and operational parameters are required due to inventory constraints, supply chain considerations, or application-specific grade requirements such as automotive qualification.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Logic
Type	Decoder/Demultiplexer
Circuit Configuration	1 x 3:8
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage Supply	2V ~ 6V
Current - Output High, Low	7.8mA, 7.8mA
Operating Temperature	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HCS137DR is determined by strict equivalence across the following parameters:

Electrical Parameters: Voltage supply range (2V ~ 6V), output current specifications (7.8mA high and low), and operating temperature range (-40°C ~ 125°C) must be identical.

Functional Parameters: All substitute parts must implement a 1 x 3:8 decoder/demultiplexer circuit configuration with single independent circuit topology.

Packaging Parameters: All substitutes must use 16-SOIC surface mount package with 0.154" (3.90mm) width specification.

Compliance Parameters: All substitutes must maintain RoHS3 compliance, MSL Level 1 rating, and REACH unaffected status.

Series Designation: All substitutes belong to the 74HCS logic series.

Substitute parts are grouped into two categories: standard industrial grade parts and automotive grade parts with AEC-Q100 qualification. Both categories share identical electrical and mechanical specifications; automotive variants include additional qualification testing and are designated with the QDRQ1 suffix.

Parameter Comparison

Part Number	Base Product	Grade	Qualification	Circuit	Package	Voltage Supply	Output Current (High/Low)	Operating Temp	Inventory (Pcs)
SN74HCS137DR	74HCS137	Industrial	None	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	2770
SN74HCS137QDRQ1	74HCS137	Automotive	AEC-Q100	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	5200
SN74HCS138DR	74HCS138	Industrial	None	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	5838
SN74HCS138QDRQ1	74HCS138	Automotive	AEC-Q100	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	3314
SN74HCS237DR	74HCS237	Industrial	None	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	3197
SN74HCS237QDRQ1	74HCS237	Automotive	AEC-Q100	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	3207
SN74HCS238DR	74HCS238	Industrial	None	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	2854
SN74HCS238QDRQ1	74HCS238	Automotive	AEC-Q100	1 x 3:8	16-SOIC	2V ~ 6V	7.8mA, 7.8mA	-40°C ~ 125°C	3066

Engineering Selection Recommendations

Industrial Applications: For standard industrial applications, SN74HCS137DR, SN74HCS138DR, SN74HCS237DR, and SN74HCS238DR are functionally equivalent substitutes. Selection among these industrial-grade variants is based on inventory availability and supply chain lead times. All maintain identical electrical specifications and RoHS3 compliance.

Automotive Applications: For automotive applications requiring AEC-Q100 qualification, the following parts are specified: SN74HCS137QDRQ1, SN74HCS138QDRQ1, SN74HCS237QDRQ1, and SN74HCS238QDRQ1. These automotive-grade variants undergo additional qualification testing and are suitable for use in automotive systems where AEC-Q100 certification is a contractual or regulatory requirement.

Product Status: All listed parts maintain Active product status with Texas Instruments, ensuring continued availability and manufacturing support.

Compliance Considerations: All substitute parts are RoHS3 compliant, REACH unaffected, and carry MSL Level 1 moisture sensitivity rating, indicating no special moisture control requirements during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can SN74HCS138DR be used as a direct substitute for SN74HCS137DR?

A: Yes. Both parts share identical electrical parameters (2V ~ 6V supply, 7.8mA output current), circuit configuration (1 x 3:8 decoder), 16-SOIC package specification, and operating temperature range (-40°C ~ 125°C). The base product numbers differ (74HCS138 versus 74HCS137), but functional equivalence is maintained across all critical parameters.

Q: What is the difference between industrial and automotive grade variants?

A: Automotive-grade parts (designated with QDRQ1 suffix) include AEC-Q100 qualification, which certifies compliance with automotive industry reliability and testing standards. Industrial-grade parts lack this certification. Electrical and mechanical specifications are identical between grades. Selection depends on application requirements and contractual specifications.

Q: Are all substitute parts available in the same 16-SOIC package?

A: Yes. All listed substitute parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package. Package compatibility is maintained across all substitutes, allowing direct board-level replacement without layout modifications.

Q: Do substitute parts require different handling or storage procedures?

A: No. All substitute parts carry MSL Level 1 moisture sensitivity rating, indicating unlimited shelf life without special moisture control measures. Storage and handling procedures are identical across all listed parts.

Q: Can automotive-grade parts be used in industrial applications?

A: Yes. Automotive-grade parts (QDRQ1 variants) meet or exceed industrial specifications and can be used in industrial applications. The additional AEC-Q100 qualification does not restrict use in non-automotive environments. Selection of automotive-grade parts in industrial applications is based on availability and cost considerations.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain full RoHS3 compliance and REACH unaffected status, meeting environmental and regulatory requirements for both industrial and automotive applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message