74HC138D,652 Equivalent & Substitute Parts

Part Overview

The 74HC138D,652 is a decoder/demultiplexer logic integrated circuit manufactured by Nexperia USA Inc. in a 16-SOIC surface mount package. This component implements a 1 x 3:8 decoder function with single supply operation across 2V to 6V. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HC138D,652
Manufacturer	Nexperia USA Inc.
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
Output Current (High/Low)	5.2mA / 5.2mA
Operating Temperature	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 74HC138D,652 is determined by the following critical parameters:

Decoder Function: 1 x 3:8 configuration (3 address inputs, 8 outputs)
Package Type: 16-SOIC surface mount form factor
Electrical Specifications: 2V to 6V supply voltage, 5.2mA output current capability
Operating Temperature Range: Minimum -40°C to 125°C
Compliance: ROHS3 compliance preferred for modern applications

Substitute parts are grouped into three categories based on availability and product status:

Direct Equivalents - Same base part number (74HC138) from alternative manufacturers with identical electrical and package specifications
Parametric Equivalents - Alternative decoder part numbers (74HC237) with identical functional and electrical characteristics
Extended Temperature Variants - Parts with expanded operating ranges (-55°C to 125°C) offering enhanced thermal performance

Parameter Comparison

Part Number	Manufacturer	Type	Circuit	Package	Voltage Supply	Output Current	Temp Range	Product Status	RoHS
74HC138D,652	Nexperia USA Inc.	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-40°C ~ 125°C	Obsolete	ROHS3
74HC138D,653	Nexperia USA Inc.	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-40°C ~ 125°C	Active	ROHS3
74HC237D,652	NXP Semiconductors	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-40°C ~ 125°C	Active	ROHS3
74HC138S16-13	Diodes Incorporated	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-40°C ~ 125°C	Active	ROHS3
CD74HC138QM96Q1	Texas Instruments	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-40°C ~ 125°C	Active	ROHS3
CD74HC138M96	Texas Instruments	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-55°C ~ 125°C	Active	ROHS3
CD74HC138MT	Texas Instruments	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-55°C ~ 125°C	Discontinued	ROHS3
MC74HC138ADG	onsemi	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-55°C ~ 125°C	Active	ROHS3
MC74HC138ADR2G	onsemi	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-55°C ~ 125°C	Active	ROHS3
MM74HC138M	onsemi	Decoder/Demux	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA	-40°C ~ 85°C	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation: 74HC138D,653

The 74HC138D,653 from Nexperia USA Inc. is the direct equivalent with identical electrical and package specifications. This part maintains active product status and ROHS3 compliance, providing the most straightforward replacement path with no design modifications required.

Secondary Recommendations for Extended Temperature Applications:

CD74HC138M96 and MC74HC138ADR2G both extend the operating temperature range to -55°C to 125°C while maintaining all other electrical parameters. These parts are suitable for applications requiring enhanced low-temperature performance. Both manufacturers (Texas Instruments and onsemi) maintain active product status.

Alternative Parametric Equivalent:

74HC237D,652 from NXP Semiconductors provides identical functional performance as a parametric equivalent decoder/demultiplexer. This part is actively produced and ROHS3 compliant, offering supply chain flexibility.

Compliance Considerations:

All recommended active substitutes maintain ROHS3 compliance. The obsolete CD74HC138M from Harris Corporation is RoHS non-compliant and should be avoided for new designs. CD74HC138MT from Texas Instruments is discontinued at DiGi Electronics and should not be selected for new production.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74HC138D,652 with 74HC138D,653?

A: Yes. Both parts are identical in electrical specifications, package type, and functional performance. The difference is in packaging format and product status. 74HC138D,653 is actively produced.

Q: What is the difference between 74HC138 and 74HC237 decoders?

A: Both implement 1 x 3:8 decoder/demultiplexer functions with identical electrical characteristics and package specifications. They are parametric equivalents suitable for direct substitution based on the provided specifications.

Q: Should I use the extended temperature variants (CD74HC138M96, MC74HC138ADR2G)?

A: Extended temperature variants are appropriate only if your application requires operation below -40°C. For standard -40°C to 125°C applications, standard variants provide equivalent performance at potentially lower cost.

Q: Are all substitute parts ROHS3 compliant?

A: All active and recommended substitute parts listed are ROHS3 compliant. Obsolete parts such as CD74HC138M may not meet current compliance requirements and should not be used in new designs.

Q: Does package format affect substitution?

A: All listed substitutes use the 16-SOIC surface mount package. Packaging options (Cut Tape, Tube, Bulk, Tape & Reel) do not affect electrical compatibility and are determined by procurement requirements only.

Q: Can I use MM74HC138M as a substitute?

A: MM74HC138M from onsemi is functionally compatible but has a reduced operating temperature range (-40°C to 85°C). Use this part only if your application does not require operation above 85°C.

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