CD74HC14MT Equivalent & Substitute Parts

Part Overview

The CD74HC14MT is a 6-channel inverter IC with Schmitt trigger input manufactured by Texas Instruments in 14-SOIC packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The CD74HC14MT operates across a 2V to 6V supply voltage range with Schmitt trigger functionality for noise immunity in digital logic applications. Substitute parts maintain functional equivalence while offering active product status and improved availability.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Schmitt Trigger
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Input Logic Level - Low	0.3V ~ 1.2V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	23ns
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CD74HC14MT are grouped based on strict electrical and mechanical compatibility criteria. All substitutes maintain the core functional requirements: 6-channel inverter configuration with Schmitt trigger input, 2V to 6V supply voltage operation, and surface mount packaging. Substitution eligibility is determined by the following parameters:

Logic Type: Inverter with 6 channels and 1 input per channel
Schmitt Trigger feature presence
Supply voltage range: 2V ~ 6V minimum
Operating temperature range: minimum -40°C to -55°C lower bound, 125°C upper bound
Package compatibility: 14-SOIC or 14-SO form factors
RoHS3 compliance and MSL 1 rating

Substitutes are further categorized by packaging type (Tape & Reel, Cut Tape, or Tube) and product status (Active or Obsolete). Parts with identical electrical specifications and package dimensions are direct parametric equivalents. Parts with enhanced performance characteristics (lower propagation delay, reduced quiescent current) are performance-improved alternatives.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Circuits / Inputs	Supply Voltage	Quiescent Current (Max)	Output Current (High/Low)	Propagation Delay @ 6V, 50pF	Operating Temp	Package	Product Status
CD74HC14MT	Texas Instruments	Inverter	6 / 1	2V ~ 6V	2 µA	5.2mA / 5.2mA	23ns	-55°C ~ 125°C	14-SOIC	Obsolete
SN74HCS14BQAR	Texas Instruments	Inverter	6 / 1	2V ~ 6V	2 µA	7.8mA / 7.8mA	16ns	-55°C ~ 125°C	14-WQFN (3x2.5)	Active
CD74HC14M96	Texas Instruments	Inverter	6 / 1	2V ~ 6V	2 µA	5.2mA / 5.2mA	23ns	-55°C ~ 125°C	14-SOIC	Active
MC74HC14ADR2G	onsemi	Inverter	6 / 1	2V ~ 6V	1 µA	5.2mA / 5.2mA	13ns	-55°C ~ 125°C	14-SOIC	Active
74HC14D,653	Nexperia USA Inc.	Inverter	6 / 1	2V ~ 6V	2 µA	5.2mA / 5.2mA	21ns	-40°C ~ 125°C	14-SO	Active
74HC14S14-13	Diodes Incorporated	Inverter	6 / 1	2V ~ 6V	20 µA	5.2mA / 5.2mA	21ns	-40°C ~ 125°C	14-SO	Active
M74HC14YRM13TR	STMicroelectronics	Inverter	6 / 1	2V ~ 6V	1 µA	5.2mA / 5.2mA	21ns	-40°C ~ 125°C	14-SO	Active
MC74HC14ADG	onsemi	Inverter	6 / 1	2V ~ 6V	1 µA	5.2mA / 5.2mA	13ns	-55°C ~ 125°C	14-SOIC	Active
MM74HC14M	onsemi	Inverter	6 / 1	2V ~ 6V	2 µA	5.2mA / 5.2mA	21ns	-55°C ~ 125°C	14-SOIC	Active
MM74HC14MX	onsemi	Inverter	6 / 1	2V ~ 6V	2 µA	5.2mA / 5.2mA	21ns	-55°C ~ 125°C	14-SOIC	Active
NLV74HC14ADR2G	onsemi	Inverter	6 / 1	2V ~ 6V	1 µA	5.2mA / 5.2mA	19ns	-55°C ~ 125°C	14-SOIC	Obsolete

Engineering Selection Recommendations

For direct replacement of the CD74HC14MT in active production designs, select from parts with active product status and identical or superior electrical characteristics. CD74HC14M96 (Texas Instruments) provides the closest parametric match with identical electrical specifications and 14-SOIC packaging, maintaining full compatibility with existing PCB layouts and supply voltage requirements.

For designs requiring enhanced performance, MC74HC14ADR2G and MC74HC14ADG (onsemi) offer reduced propagation delay (13ns versus 23ns) and lower quiescent current (1 µA versus 2 µA) while maintaining the same supply voltage range and operating temperature span. Both parts are ROHS3 compliant and MSL 1 rated.

SN74HCS14BQAR (Texas Instruments) represents a performance-enhanced alternative with faster propagation delay (16ns) and higher output current capability (7.8mA), though it uses 14-WQFN packaging instead of 14-SOIC, requiring PCB layout modification.

For automotive applications requiring AEC-Q100 qualification, M74HC14YRM13TR (STMicroelectronics) and NLV74HC14ADR2G (onsemi) are qualified options. Note that M74HC14YRM13TR operates to -40°C minimum, which may not meet all temperature specifications requiring -55°C operation.

74HC14D,653 (Nexperia USA Inc.) and 74HC14S14-13 (Diodes Incorporated) are active alternatives with 14-SO packaging. The Diodes part exhibits elevated quiescent current (20 µA) and reduced operating temperature range (-40°C minimum), making it suitable only for applications not requiring -55°C operation.

Frequently Asked Questions (FAQ)

Q: Can CD74HC14MT be replaced with SN74HCS14BQAR?

A: SN74HCS14BQAR is functionally equivalent but uses 14-WQFN packaging instead of 14-SOIC. Direct PCB substitution is not possible without layout redesign. The part offers improved propagation delay (16ns) and higher output current (7.8mA).

Q: What is the difference between 14-SOIC and 14-SO packaging?

A: Both are 14-pin surface mount packages with 0.154" width and 3.90mm body width. 14-SOIC and 14-SO are functionally equivalent package designations. Parts in either package are mechanically compatible with CD74HC14MT footprints.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitutes are ROHS3 compliant and MSL 1 rated, matching the environmental compliance of the original CD74HC14MT.

Q: Which substitute offers the fastest propagation delay?

A: MC74HC14ADR2G and MC74HC14ADG both provide 13ns propagation delay at 6V with 50pF load, compared to 23ns for the CD74HC14MT. Both are onsemi parts with active product status.

Q: Can I use 74HC14S14-13 in a -55°C application?

A: No. 74HC14S14-13 operates only to -40°C minimum temperature. For applications requiring -55°C operation, select from CD74HC14M96, MC74HC14ADR2G, MC74HC14ADG, MM74HC14M, MM74HC14MX, or NLV74HC14ADR2G.

Q: What is the quiescent current difference between substitutes?

A: Quiescent current ranges from 1 µA (MC74HC14ADR2G, MC74HC14ADG, M74HC14YRM13TR, NLV74HC14ADR2G) to 20 µA (74HC14S14-13). The original CD74HC14MT and most alternatives operate at 2 µA, suitable for low-power applications.

Q: Are onsemi parts suitable for high-volume production?

A: Yes. onsemi substitutes (MC74HC14ADR2G, MC74HC14ADG, MM74HC14M, MM74HC14MX, NLV74HC14ADR2G) are active products with substantial inventory availability and are suitable for production designs.

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