CD74HC237MT Equivalent & Substitute Parts

Part Overview

The CD74HC237MT is a decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This device implements a 1 x 3:8 decoder/demultiplexer function with single supply voltage operation across 2V to 6V. The CD74HC237MT is currently listed as obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD74HC237MT
Manufacturer	Texas Instruments
Type	Decoder/Demultiplexer
Circuit Configuration	1 x 3:8
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage Supply Range	2V ~ 6V
Output Current (High/Low)	5.2mA / 5.2mA
Operating Temperature Range	-55°C ~ 125°C
Series	74HC
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC237MT is determined by strict equivalence across the following parameters:

Circuit configuration: 1 x 3:8 decoder/demultiplexer function
Package type: 16-SOIC surface mount package with 0.154" width (3.90mm)
Voltage supply range: 2V ~ 6V single supply operation
Output current specifications: 5.2mA high and low
Operating temperature range: -55°C ~ 125°C minimum
Series classification: 74HC logic family
Compliance: ROHS3 and REACH requirements

Substitute parts are grouped into two categories: Texas Instruments parametric equivalents with identical electrical specifications and packaging, and cross-manufacturer alternatives from NXP Semiconductors, STMicroelectronics, and onsemi that maintain functional and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Base Product	Package	Voltage Supply	Output Current (H/L)	Temp Range	Product Status	Inventory
CD74HC237MT	Texas Instruments	74HC237	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Obsolete	2300 Pcs
CD74HC237M96	Texas Instruments	74HC237	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	1630 Pcs
CD74HC138MT	Texas Instruments	74HC138	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Discontinued at DiGi Electronics	2489 Pcs
CD74HC138M96	Texas Instruments	74HC138	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	2843 Pcs
CD74HC238MT	Texas Instruments	74HC238	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Discontinued at DiGi Electronics	1193 Pcs
CD74HC238M96	Texas Instruments	74HC238	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	16371 Pcs
74HC237D,653	Nexperia USA Inc.	74HC237	16-SO	2V ~ 6V	5.2mA / 5.2mA	-40°C ~ 125°C	Active	27520 Pcs
74HC237D,652	NXP Semiconductors	74HC237	16-SO	2V ~ 6V	5.2mA / 5.2mA	-40°C ~ 125°C	Active	49961 Pcs
MC74HC138ADR2G	onsemi	74HC138	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	18498 Pcs
MC74HC238ADR2G	onsemi	74HC238	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	1844 Pcs
M74HC238RM13TR	STMicroelectronics	74HC238	16-SO	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Obsolete	17690 Pcs

Engineering Selection Recommendations

For applications currently using the CD74HC237MT, the following selection criteria apply based on product status and compliance:

Primary Recommendation: CD74HC237M96 (Texas Instruments) provides direct functional equivalence with active product status, identical electrical specifications, and ROHS3 compliance. This part maintains the same base product number (74HC237) and packaging format.

Alternative from Active Inventory: CD74HC238M96 (Texas Instruments) offers the highest inventory availability (16,371 pieces) with active product status. While based on the 74HC238 variant, it maintains identical electrical parameters and packaging specifications required for substitution.

Cross-Manufacturer Options: MC74HC138ADR2G (onsemi) and MC74HC238ADR2G (onsemi) provide active product status with substantial inventory levels. Both maintain full electrical and thermal specification equivalence with ROHS3 compliance.

NXP/Nexperia Alternatives: 74HC237D,653 (Nexperia USA Inc.) and 74HC237D,652 (NXP Semiconductors) maintain the 74HC237 base product designation with active status and high inventory availability. Operating temperature range is -40°C to 125°C, which covers the CD74HC237MT's -55°C to 125°C range for temperatures above -40°C.

Parts with obsolete status (M74HC238RM13TR from STMicroelectronics) should be avoided for new designs despite adequate inventory.

Frequently Asked Questions (FAQ)

Q: Can CD74HC237M96 directly replace CD74HC237MT in existing designs?

A: Yes. Both parts share identical electrical specifications, package type (16-SOIC), voltage supply range (2V ~ 6V), output current ratings (5.2mA), and operating temperature range (-55°C ~ 125°C). The primary difference is product status; CD74HC237M96 is active while CD74HC237MT is obsolete.

Q: What is the difference between 74HC237, 74HC238, and 74HC138 variants?

A: All three are 1 x 3:8 decoder/demultiplexer circuits with identical electrical specifications and packaging. They are functionally equivalent for substitution purposes based on the parameters provided. Selection among these variants should be based on availability and product status.

Q: Are NXP and Nexperia parts compatible with Texas Instruments originals?

A: Yes. The 74HC237D,653 and 74HC237D,652 parts maintain full electrical and functional equivalence. The primary consideration is the operating temperature range: NXP/Nexperia variants specify -40°C to 125°C versus Texas Instruments' -55°C to 125°C. For applications requiring operation below -40°C, Texas Instruments parts are required.

Q: What packaging differences exist between 16-SOIC and 16-SO designations?

A: Both designations refer to 16-pin small outline integrated circuit packages with 0.154" (3.90mm) width. These are mechanically and electrically compatible for PCB assembly and circuit operation.

Q: Which substitute part offers the best availability?

A: 74HC237D,652 (NXP Semiconductors) provides the highest inventory level at 49,961 pieces with active product status and full electrical equivalence to the CD74HC237MT.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance and REACH compliance status, matching the CD74HC237MT's regulatory requirements.

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