CD74HC151MT Equivalent & Substitute Parts

Part Overview

The CD74HC151MT is a 1 x 8:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The CD74HC151MT operates as a data selector with single supply voltage operation, suitable for applications requiring multiplexing of eight input lines to a single output.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD74HC151MT
Manufacturer	Texas Instruments
Type	Multiplexer
Circuit Configuration	1 x 8:1
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage Supply	2V ~ 6V
Current - Output High, Low	5.2mA, 5.2mA
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the CD74HC151MT is determined by the following critical parameters:

Circuit configuration: 1 x 8:1 multiplexer function
Package type: 16-SOIC surface mount
Voltage supply range: 2V ~ 6V
Output current capability: 5.2mA high and low
Operating temperature range: -55°C ~ 125°C minimum
RoHS compliance status

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

Active Status Substitutes: Parts currently in production with full manufacturer support and ROHS3 compliance.

Last Time Buy / Obsolete Status Substitutes: Parts with limited availability or end-of-life status, suitable only when active alternatives are unavailable.

Parametric Equivalents: Parts with identical electrical specifications and package dimensions but different base product numbers (74HC151 vs. 74HC251 series).

Parameter Comparison

Part Number	Manufacturer	Circuit	Package	Voltage Supply	Output Current (High/Low)	Operating Temp	Product Status	RoHS Status
CD74HC151MT	Texas Instruments	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Discontinued	ROHS3
CD74HC151M96	Texas Instruments	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	ROHS3
MC74HC151ADR2G	onsemi	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	ROHS3
74HC151D,653	Nexperia USA Inc.	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-40°C ~ 125°C	Active	ROHS3
74HC151D-Q100,118	Nexperia USA Inc.	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-40°C ~ 125°C	Active	ROHS3
CD74HC251MT	Texas Instruments	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Last Time Buy	ROHS3
MC74HC251ADR2G	onsemi	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Active	ROHS3
CD74HC251M96	Harris Corporation	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Obsolete	Non-compliant
NLV74HC251ADR2G	onsemi	1 x 8:1	16-SOIC	2V ~ 6V	5.2mA / 5.2mA	-55°C ~ 125°C	Obsolete	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Active Status, ROHS3 Compliant):

CD74HC151M96 (Texas Instruments) is the direct active equivalent with identical specifications and manufacturer continuity. MC74HC151ADR2G (onsemi) provides an active alternative from a different manufacturer with full compliance. 74HC151D,653 (Nexperia USA Inc.) is an active substitute with extended temperature range to -40°C and high inventory availability.

Automotive Grade Option:

74HC151D-Q100,118 (Nexperia USA Inc.) is suitable for applications requiring AEC-Q100 automotive qualification with active product status.

Secondary Substitutes (Limited Availability):

CD74HC251MT (Texas Instruments) is available as a Last Time Buy option with identical electrical and thermal specifications. MC74HC251ADR2G (onsemi) is an active alternative using the 74HC251 base product number with equivalent functionality.

Not Recommended:

CD74HC251M96 (Harris Corporation) is obsolete and RoHS non-compliant. NLV74HC251ADR2G (onsemi) is obsolete despite ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use CD74HC151M96 as a direct replacement for CD74HC151MT?

A: Yes. CD74HC151M96 is an active equivalent from Texas Instruments with identical electrical specifications, package type, voltage supply range, output current ratings, and operating temperature range. The primary difference is product status: CD74HC151M96 is active while CD74HC151MT is discontinued.

Q: What is the difference between 74HC151 and 74HC251 base product numbers?

A: Both are 1 x 8:1 multiplexers with identical electrical specifications and package dimensions. The base product number difference reflects internal design variations that do not affect functional compatibility in standard applications. Substitution between these series is permitted based on matching electrical parameters.

Q: Are Nexperia 74HC151D,653 and 74HC151D-Q100,118 interchangeable?

A: Yes, for non-automotive applications. Both parts are functionally equivalent with identical electrical specifications. The 74HC151D-Q100,118 variant includes AEC-Q100 automotive qualification and should be used only when automotive-grade components are required.

Q: Does the operating temperature range difference between -55°C and -40°C affect substitution?

A: The CD74HC151MT operates from -55°C to 125°C. Nexperia parts (74HC151D,653 and 74HC151D-Q100,118) operate from -40°C to 125°C. Substitution is valid only if your application does not require operation below -40°C.

Q: Why is CD74HC251M96 not recommended despite being listed?

A: CD74HC251M96 is obsolete and RoHS non-compliant, making it unsuitable for new designs and restricted in many procurement environments. Active alternatives with full compliance are available.

Q: What packaging considerations apply to these substitutes?

A: All listed substitutes use 16-SOIC surface mount packages with 0.154" width and 3.90mm body dimensions. PCB footprints and reflow profiles are compatible across all substitutes.

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