CD74HC14ME4 Equivalent & Substitute Parts

Part Overview

The CD74HC14ME4 is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Suitable alternatives maintain identical or superior electrical characteristics while conforming to the same 74HC14 logic family specifications.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Schmitt Trigger
Voltage Supply Range	2V to 6V
Mounting Type	Surface Mount
Package Type	14-SOIC (0.154", 3.90mm Width)
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD74HC14ME4 is determined by strict adherence to the following parameters:

Logic Family: All substitutes must be 74HC14 base product number inverters with 6 channels and Schmitt trigger functionality
Package Compatibility: All substitutes must use 14-SOIC or 14-SO surface mount packaging with 0.154" (3.90mm) width
Electrical Specifications: Supply voltage range 2V to 6V, output current capability 5.2mA (high and low), and input logic levels must be compatible
Environmental Compliance: RoHS3 compliance and MSL 1 rating required
Mounting Type: Surface mount only

Substitute parts are grouped by manufacturer and product status. Active parts with current availability are preferred over discontinued or obsolete alternatives.

Parameter Comparison

Part Number	Manufacturer	Product Status	Packaging	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temperature	Inventory
CD74HC14ME4	Texas Instruments	Discontinued at DiGi Electronics	14-SOIC	2 µA	23ns	-55°C to 125°C	762 Pcs
CD74HC14M96	Texas Instruments	Active	14-SOIC	2 µA	23ns	-55°C to 125°C	4177 Pcs
CD74HC14M	Texas Instruments	Discontinued at DiGi Electronics	14-SOIC	2 µA	23ns	-55°C to 125°C	2138 Pcs
MC74HC14ADR2G	onsemi	Active	14-SOIC	1 µA	13ns	-55°C to 125°C	275100 Pcs
74HC14D,653	Nexperia USA Inc.	Active	14-SO	2 µA	21ns	-40°C to 125°C	2200 Pcs
74HC14S14-13	Diodes Incorporated	Active	14-SO	20 µA	21ns	-40°C to 125°C	1225 Pcs
M74HC14YRM13TR	STMicroelectronics	Active	14-SO	1 µA	21ns	-40°C to 125°C	1981 Pcs
MC74HC14ADG	onsemi	Active	14-SOIC	1 µA	13ns	-55°C to 125°C	3060 Pcs
MM74HC14M	onsemi	Active	14-SOIC	2 µA	21ns	-55°C to 125°C	1311 Pcs
MM74HC14MX	onsemi	Active	14-SOIC	2 µA	21ns	-55°C to 125°C	7404 Pcs
NLV74HC14ADR2G	onsemi	Obsolete	14-SOIC	1 µA	19ns	-55°C to 125°C	6855 Pcs

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Temperature Range)

CD74HC14M96 (Texas Instruments) is the direct active equivalent with identical electrical specifications and -55°C to 125°C operating range. This part maintains full compatibility with the original CD74HC14ME4 design.

MC74HC14ADR2G and MC74HC14ADG (onsemi) are active alternatives with superior performance characteristics: lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 23ns). Both maintain the -55°C to 125°C temperature range and are available in high inventory quantities.

MM74HC14MX (onsemi) provides active status with 7404 Pcs inventory availability, matching the original specifications with 2 µA quiescent current and 21ns propagation delay.

Secondary Substitutes (Active Status, Reduced Temperature Range)

74HC14D,653 (Nexperia USA Inc.), 74HC14S14-13 (Diodes Incorporated), and M74HC14YRM13TR (STMicroelectronics) are active alternatives with -40°C to 125°C operating range. These parts are suitable for applications not requiring the full -55°C lower temperature limit. M74HC14YRM13TR includes AEC-Q100 automotive qualification.

Not Recommended

NLV74HC14ADR2G (onsemi) has obsolete product status and should not be selected for new designs despite available inventory.

Frequently Asked Questions (FAQ)

Q: Can I use MC74HC14ADR2G as a direct replacement for CD74HC14ME4?

A: Yes. MC74HC14ADR2G is a direct functional equivalent with identical pin configuration, package type (14-SOIC), and electrical specifications. It operates across the same -55°C to 125°C temperature range and is RoHS3 compliant. The faster propagation delay (13ns vs. 23ns) and lower quiescent current (1 µA vs. 2 µA) represent performance improvements.

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

A: Both 14-SOIC and 14-SO refer to 14-pin surface mount small outline packages with 0.154" (3.90mm) width. These packages are mechanically and electrically compatible for PCB assembly and design purposes.

Q: Why does 74HC14S14-13 have higher quiescent current (20 µA) than other substitutes?

A: 74HC14S14-13 from Diodes Incorporated has a specified maximum quiescent current of 20 µA, which is higher than other 74HC14 variants. This part remains functionally compatible but may have different power consumption characteristics in standby conditions. Verify power budget requirements before selection.

Q: Is the reduced operating temperature range (-40°C to 125°C) acceptable for my application?

A: Parts with -40°C to 125°C range are suitable for commercial and industrial applications. If your design requires operation below -40°C, select parts with -55°C to 125°C range: CD74HC14M96, MC74HC14ADR2G, MC74HC14ADG, MM74HC14M, MM74HC14MX, or NLV74HC14ADR2G.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original CD74HC14ME4 environmental specifications.

Q: Which substitute has the best availability?

A: MC74HC14ADR2G (onsemi) has the highest inventory at 275,100 Pcs, followed by MM74HC14MX (onsemi) at 7,404 Pcs and NLV74HC14ADR2G (onsemi) at 6,855 Pcs.

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