74LCX10M NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74LCX10M is a 3-channel, 3-input NAND gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The 74LCX series operates at 2.3V to 3.6V supply voltage with low quiescent current and standard propagation delay characteristics suitable for general-purpose logic applications.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	3
Number of Inputs	3
Voltage - Supply	2.3V ~ 3.6V
Current - Quiescent (Max)	10 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.7V ~ 0.8V
Input Logic Level - High	1.7V ~ 2V
Max Propagation Delay @ 3.3V, 50pF	4.9ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 74LCX10M are selected based on functional equivalence across the following critical parameters:

Logic function: 3-channel, 3-input NAND gate
Circuit count and input configuration: 3 circuits with 3 inputs each
Output drive capability: 24mA high and low
Input logic thresholds: 0.7V ~ 0.8V (low), 1.7V ~ 2V (high)
Package type: 14-SOIC surface mount
Propagation delay performance: 4.7ns ~ 4.9ns @ 3.3V, 50pF

All substitute parts listed operate within compatible voltage ranges and maintain equivalent logic performance. The 74LVC series substitutes offer active product status and improved specifications including lower quiescent current and extended operating temperature ranges.

Parameter Comparison

Parameter	74LCX10M (onsemi)	74LVC10AD,118 (NXP)	SN74LVC10AD (TI)	SN74LVC10ADR (TI)	SN74LVC10ADT (TI)	SN74LVC10ANSR (TI)
Logic Type	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	3	3	3	3	3	3
Number of Inputs	3	3	3	3	3	3
Voltage - Supply	2.3V ~ 3.6V	Not specified	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Current - Quiescent (Max)	10 µA	Not specified	1 µA	1 µA	1 µA	1 µA
Current - Output High, Low	24mA, 24mA	Not specified	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Input Logic Level - Low	0.7V ~ 0.8V	Not specified	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V
Input Logic Level - High	1.7V ~ 2V	Not specified	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V
Max Propagation Delay @ 3.3V, 50pF	4.9ns	Not specified	4.7ns	4.7ns	4.7ns	4.7ns
Operating Temperature	-40°C ~ 85°C	Not specified	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm)	Not specified	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.209", 5.30mm)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 74LCX10M is obsolete and should be replaced with active alternatives for new designs and ongoing production. All listed substitute parts maintain functional equivalence and are manufactured by established suppliers with active product status.

Primary Recommendation: SN74LVC10AD, SN74LVC10ADR, or SN74LVC10ADT (Texas Instruments) are preferred substitutes. These parts offer:

Active product status with full manufacturing support
ROHS3 compliance for regulatory requirements
Extended operating temperature range (-40°C ~ 125°C)
Improved quiescent current (1 µA vs. 10 µA)
Equivalent propagation delay performance (4.7ns)
Full compatibility with 14-SOIC packaging

Secondary Recommendation: 74LVC10AD,118 (NXP Semiconductors) provides an alternative from a different manufacturer with active status.

Package Consideration: SN74LVC10ANSR uses 14-SO packaging with 5.30mm width, differing from the standard 3.90mm width of other options. Verify PCB footprint compatibility before selection.

Frequently Asked Questions (FAQ)

Q: Can the 74LCX10M be directly replaced with SN74LVC10AD? A: Yes. Both parts are 3-channel, 3-input NAND gates in 14-SOIC packaging with identical logic thresholds and output drive capability. The SN74LVC10AD offers improved specifications including lower quiescent current and extended temperature range.

Q: What is the difference between the Texas Instruments packaging options (AD, ADR, ADT, ANSR)? A: SN74LVC10AD is supplied in tube packaging. SN74LVC10ADR and SN74LVC10ADT are supplied in cut tape and digi-reel formats. SN74LVC10ANSR is supplied in tape and reel with a wider 14-SO package (5.30mm vs. 3.90mm). All are functionally equivalent; selection depends on packaging and quantity requirements.

Q: Are all substitute parts RoHS compliant? A: The Texas Instruments substitutes (SN74LVC10AD, SN74LVC10ADR, SN74LVC10ADT, SN74LVC10ANSR) are ROHS3 compliant. The NXP 74LVC10AD,118 RoHS status is not specified in available data.

Q: What is the voltage supply range compatibility? A: The 74LCX10M operates at 2.3V ~ 3.6V. Texas Instruments substitutes operate at 1.65V ~ 3.6V, providing broader low-voltage compatibility. The NXP part voltage range is not specified. All are compatible with standard 3.3V logic systems.

Q: Does the lower quiescent current of substitute parts affect circuit design? A: The SN74LVC10AD series draws 1 µA quiescent current compared to 10 µA for the 74LCX10M. This improvement reduces power consumption and heat generation with no negative impact on circuit functionality or performance.

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