74HC14DR2G Equivalent & Substitute Parts

Part Overview

The 74HC14DR2G is a 6-channel inverter IC with Schmitt trigger inputs manufactured by onsemi in a 14-SOIC surface mount package. This logic component operates across a 2V to 6V supply voltage range and features input hysteresis for noise immunity. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Logic Type	Inverter with Schmitt Trigger
Number of Circuits	6
Number of Inputs	1
Voltage Supply Range	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	5.2mA / 5.2mA
Max Propagation Delay @ 6V, 50pF	13ns
Operating Temperature	-55°C ~ 125°C
Package Type	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74HC14DR2G is determined by the following critical parameters:

Base product number (74HC14 series)
Logic function (6-channel inverter with Schmitt trigger)
Package type (14-SOIC surface mount)
Supply voltage range (2V ~ 6V minimum)
Operating temperature range (-55°C ~ 125°C or -40°C ~ 125°C)
Output drive capability (5.2mA minimum)
Propagation delay performance (13ns to 23ns @ 6V, 50pF)

Substitute parts maintain the same functional logic, pin count, and package footprint. Variations in quiescent current, propagation delay, and input logic level thresholds are within acceptable tolerances for the 74HC14 family. Parts from different manufacturers (onsemi, Nexperia, Texas Instruments, Diodes Incorporated, STMicroelectronics) are functionally equivalent when these core parameters align.

Parameter Comparison

Part Number	Manufacturer	Status	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temp	Package
74HC14DR2G	onsemi	Obsolete	2V ~ 6V	2 µA	13ns	-55°C ~ 125°C	14-SOIC
MC74HC14ADR2G	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC
MM74HC14M	onsemi	Active	2V ~ 6V	2 µA	21ns	-55°C ~ 125°C	14-SOIC
MM74HC14MX	onsemi	Active	2V ~ 6V	2 µA	21ns	-55°C ~ 125°C	14-SOIC
74HC14D,653	Nexperia USA Inc.	Active	2V ~ 6V	2 µA	21ns	-40°C ~ 125°C	14-SO
74HC14S14-13	Diodes Incorporated	Active	2V ~ 6V	20 µA	21ns	-40°C ~ 125°C	14-SO
CD74HC14M	Texas Instruments	Discontinued at DiGi Electronics	2V ~ 6V	2 µA	23ns	-55°C ~ 125°C	14-SOIC
CD74HC14M96	Texas Instruments	Active	2V ~ 6V	2 µA	23ns	-55°C ~ 125°C	14-SOIC
CD74HC14MT	Texas Instruments	Obsolete	2V ~ 6V	2 µA	23ns	-55°C ~ 125°C	14-SOIC
M74HC14YRM13TR	STMicroelectronics	Active	2V ~ 6V	1 µA	21ns	-40°C ~ 125°C	14-SO

Engineering Selection Recommendations

For applications requiring the 74HC14DR2G, the following active parts are recommended based on product status and compliance:

Primary Substitutes (Active Status, Full Temperature Range):

MC74HC14ADR2G (onsemi): Active status with improved quiescent current (1 µA) and matching 13ns propagation delay. ROHS3 compliant.
MM74HC14M or MM74HC14MX (onsemi): Active status with standard 2 µA quiescent current. ROHS3 compliant. Slightly higher propagation delay (21ns) acceptable for most applications.
CD74HC14M96 (Texas Instruments): Active status with ROHS3 compliance. Propagation delay of 23ns is within acceptable range for 74HC14 family specifications.

Secondary Substitutes (Active Status, Reduced Temperature Range):

74HC14D,653 (Nexperia): Active status with -40°C to 125°C operating range. Suitable for applications not requiring -55°C operation.
M74HC14YRM13TR (STMicroelectronics): Active status with automotive qualification (AEC-Q100). Operating range -40°C to 125°C. Recommended for automotive applications.

Not Recommended:

74HC14S14-13 (Diodes Incorporated): Elevated quiescent current (20 µA) exceeds standard 74HC14 specifications.
74HCU04S14-13 (Diodes Incorporated): Different logic series (74HCU04 vs 74HC14). Not functionally equivalent.

All recommended substitutes maintain 14-SOIC or 14-SO package compatibility, identical pin configuration, and equivalent electrical performance within specified tolerances.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74HC14DR2G with MC74HC14ADR2G? A: Yes. MC74HC14ADR2G is a direct substitute with identical package, pin configuration, and logic function. It offers improved quiescent current (1 µA vs 2 µA) and matching propagation delay (13ns). Both support -55°C to 125°C operation.

Q: What is the difference between 14-SOIC and 14-SO packages? A: Both are 14-pin surface mount packages with 0.154" (3.90mm) width. They are mechanically and electrically compatible for PCB footprint purposes. The designations reflect different manufacturing standards but are interchangeable in most applications.

Q: Why does 74HC14S14-13 have higher quiescent current? A: The 74HC14S14-13 specification lists 20 µA maximum quiescent current, which exceeds the standard 74HC14 family specification of 2 µA. This part is not recommended as a direct substitute due to this deviation.

Q: Is the 74HCU04S14-13 a valid substitute? A: No. The 74HCU04 is a different logic series (unbuffered inverter) compared to the 74HC14 (Schmitt trigger inverter). While both are 6-channel inverters in 14-SO packages, they have different input threshold characteristics and are not functionally equivalent.

Q: Can I use parts with -40°C to 125°C range instead of -55°C to 125°C? A: This depends on your application requirements. If your design operates only within -40°C to 125°C, parts like 74HC14D,653 or M74HC14YRM13TR are suitable. If your application requires -55°C operation, use MC74HC14ADR2G, MM74HC14M, MM74HC14MX, CD74HC14M96, or CD74HC14MT.

Q: What does ROHS3 compliance mean? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting lead and other hazardous materials. All active substitute parts listed are ROHS3 compliant.

Q: Does propagation delay variation affect circuit performance? A: The 74HC14DR2G specifies 13ns propagation delay. Substitutes range from 13ns to 23ns. For most logic applications, this 10ns variation is within acceptable timing margins. For time-critical applications, verify timing requirements against specific substitute specifications.

Q: Is M74HC14YRM13TR suitable for automotive applications? A: Yes. M74HC14YRM13TR carries AEC-Q100 automotive qualification and is recommended for automotive-grade designs. It maintains full 74HC14 functionality with -40°C to 125°C operating range.

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