74HC238D,652 Equivalent & Substitute Parts

Part Overview

The 74HC238D,652 is a logic decoder/demultiplexer IC manufactured by Nexperia USA Inc., featuring a 1 x 3:8 circuit configuration in a 16-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The decoder/demultiplexer function remains consistent across qualified substitutes, enabling direct replacement where electrical and mechanical parameters align.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HC238D,652
Manufacturer	Nexperia USA Inc.
Category	Logic
Type	Decoder/Demultiplexer
Circuit Configuration	1 x 3:8
Package / Case	16-SOIC (0.154", 3.90mm Width)
Voltage Supply	2V ~ 6V
Current - Output High, Low	5.2mA, 5.2mA
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC238D,652 is determined by the following critical parameters:

Circuit configuration: 1 x 3:8 decoder/demultiplexer function
Package type: 16-SOIC surface mount form factor
Voltage supply range: 2V ~ 6V single supply
Output current capability: 5.2mA high and low
Mounting compatibility: Surface mount technology

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

Similar/Direct Substitutes: Parts with identical electrical specifications and package compatibility, differing primarily in manufacturer or product status.

Parametric Equivalents: Parts meeting all critical electrical and mechanical parameters with minor variations in temperature range or compliance certifications.

Upgrade Options: Parts with extended temperature ranges or improved compliance status, suitable for applications requiring enhanced reliability.

Parameter Comparison

Part Number	Manufacturer	Circuit	Package	Voltage Supply	Output Current (High/Low)	Operating Temp	Product Status	RoHS Status
74HC238D,652	Nexperia USA Inc.	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-40°C ~ 125°C	Obsolete	ROHS3 Compliant
74HC238D,653	NXP Semiconductors	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-40°C ~ 125°C	Active	ROHS3 Compliant
74HC237D,652	NXP Semiconductors	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-40°C ~ 125°C	Active	ROHS3 Compliant
CD74HC238M	Harris Corporation	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Obsolete	RoHS non-compliant
CD74HC238M96	Texas Instruments	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	ROHS3 Compliant
CD74HC238MT	Texas Instruments	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Discontinued at DiGi Electronics	ROHS3 Compliant
M74HC238RM13TR	STMicroelectronics	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Obsolete	ROHS3 Compliant
MC74HC238ADG	onsemi	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	ROHS3 Compliant
MC74HC238ADR2G	onsemi	1 x 3:8	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: 74HC238D,653 (NXP Semiconductors) provides the closest match to the original 74HC238D,652, maintaining identical electrical specifications and operating temperature range while offering active product status and ROHS3 compliance.

Active Product Alternatives: CD74HC238M96 (Texas Instruments), MC74HC238ADG (onsemi), and MC74HC238ADR2G (onsemi) are all active products with ROHS3 compliance. These parts extend the operating temperature range to -55°C ~ 125°C, providing enhanced thermal performance for demanding applications.

Parametric Equivalent: 74HC237D,652 (NXP Semiconductors) meets all critical electrical and mechanical parameters with active product status, suitable for applications where the base product number variation is acceptable.

Compliance Consideration: CD74HC238M (Harris Corporation) is RoHS non-compliant and obsolete; selection should be limited to applications where legacy compliance requirements are not applicable.

Frequently Asked Questions (FAQ)

Q: Can 74HC238D,653 directly replace 74HC238D,652?

A: Yes. Both parts share identical circuit configuration (1 x 3:8), package type (16-SOIC), voltage supply range (2V ~ 6V), output current specifications (5.2mA), and operating temperature range (-40°C ~ 125°C). The primary difference is product status: 74HC238D,653 is active while 74HC238D,652 is obsolete.

Q: What is the difference between 74HC238D,652 and 74HC237D,652?

A: Both parts are parametrically equivalent decoders with identical electrical specifications and package compatibility. The base product number differs (74HC238 vs. 74HC237), but they maintain the same 1 x 3:8 circuit configuration and are both available from NXP Semiconductors in active status.

Q: Do the Texas Instruments parts (CD74HC238M96, CD74HC238MT) offer advantages?

A: These parts extend the operating temperature range to -55°C ~ 125°C compared to the original -40°C ~ 125°C specification. Both maintain ROHS3 compliance and identical electrical performance. CD74HC238M96 is currently active, while CD74HC238MT is discontinued at DiGi Electronics.

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

A: Yes. All listed substitute parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility and PCB layout interchangeability.

Q: Which substitute offers the best long-term availability?

A: MC74HC238ADG and MC74HC238ADR2G (onsemi) and CD74HC238M96 (Texas Instruments) are all active products with ROHS3 compliance, providing the strongest availability outlook for new designs and ongoing procurement.

Q: Is RoHS compliance a factor in substitution?

A: Yes. The original 74HC238D,652 is ROHS3 compliant. Most active substitutes maintain this compliance. CD74HC238M (Harris Corporation) is RoHS non-compliant and should be avoided in applications requiring regulatory compliance.

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