74LCX10MTC NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74LCX10MTC is a 3-channel, 3-input NAND gate logic IC manufactured by onsemi in 14-TSSOP surface mount packaging. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The 74LCX series operates across a 2.3V to 3.6V supply voltage range with low quiescent current and fast 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-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 74LCX10MTC is determined by the following critical parameters:

Logic Function: All substitutes must implement 3-channel, 3-input NAND gate logic
Supply Voltage Compatibility: Substitute parts must operate within or encompass the 2.3V to 3.6V range
Output Drive Capability: Output current specifications (24mA high/low) must be maintained
Propagation Delay: Maximum propagation delay at 3.3V and 50pF load must not exceed 5.7ns
Package Compatibility: 14-TSSOP or 14-SSOP surface mount packages are acceptable
Input Logic Levels: Substitute parts must accept the same input threshold voltage ranges

The 74LVC series from NXP and Texas Instruments meets these criteria. The 74LVC10 base product number represents the active equivalent to the obsolete 74LCX10, with enhanced specifications including wider supply voltage range (1.2V to 3.6V for NXP; 1.65V to 3.6V for TI), extended operating temperature range, and improved quiescent current performance.

Parameter Comparison

Parameter	74LCX10MTC (onsemi)	74LVC10APW,118 (NXP)	SN74LVC10ADBR (TI)	SN74LVC10APW (TI)	SN74LVC10APWR (TI)	SN74LVC10APWT (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	1.2V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Current - Quiescent (Max)	10 µA	40 µA	1 µA	1 µA	1 µA	1 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Input Logic Level - Low	0.7V ~ 0.8V	0.12V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V
Input Logic Level - High	1.7V ~ 2V	1.08V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V
Max Propagation Delay @ 3.3V, 50pF	4.9ns	5.7ns	4.7ns	4.7ns	4.7ns	4.7ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-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-TSSOP	14-TSSOP	14-SSOP	14-TSSOP	14-TSSOP	14-TSSOP
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended)

The Texas Instruments SN74LVC10 variants (SN74LVC10APW, SN74LVC10APWR, SN74LVC10APWT, SN74LVC10ADBR) are the preferred substitutes for the 74LCX10MTC. These parts are active products with RoHS3 compliance and REACH unaffected status. The TI variants offer superior quiescent current performance (1 µA maximum versus 10 µA for the original), faster propagation delay (4.7ns versus 4.9ns), and extended operating temperature range (-40°C to 125°C). All TI variants maintain identical output drive capability and input logic level thresholds compatible with the original design.

Secondary Substitute (Alternative)

The NXP 74LVC10APW,118 provides an active alternative with the widest supply voltage range (1.2V to 3.6V). This part is suitable for applications requiring lower supply voltage operation. However, the quiescent current specification (40 µA maximum) is higher than both the original and TI alternatives, and propagation delay is slightly increased (5.7ns). The NXP part remains functionally compatible for standard 3.3V and 5V logic applications.

Package Considerations

The SN74LVC10ADBR uses 14-SSOP packaging (5.30mm width) versus the 14-TSSOP (4.40mm width) of the original and other substitutes. PCB layout modifications are required for this variant. For direct footprint compatibility, select SN74LVC10APW, SN74LVC10APWR, SN74LVC10APWT, or 74LVC10APW,118.

Compliance and Certification

All active substitutes carry REACH unaffected and EAR99 ECCN classifications matching the original part. Texas Instruments variants include RoHS3 compliance certification. Moisture sensitivity level remains 1 (Unlimited) across all substitutes.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC10ADBR be used as a direct replacement for the 74LCX10MTC?

A: The SN74LVC10ADBR is functionally equivalent but uses 14-SSOP packaging (5.30mm width) instead of 14-TSSOP (4.40mm width). PCB layout and footprint modifications are required. For direct footprint compatibility without layout changes, use SN74LVC10APW, SN74LVC10APWR, or SN74LVC10APWT.

Q: What is the difference between the Texas Instruments packaging variants (APW, APWR, APWT)?

A: All three variants (SN74LVC10APW, SN74LVC10APWR, SN74LVC10APWT) are electrically identical with identical specifications. The packaging designation indicates the supply format: APW is supplied in Tube, APWR in Tape & Reel, and APWT in Tape & Reel. Select based on procurement and assembly requirements.

Q: Is the NXP 74LVC10APW,118 suitable for my 3.3V application?

A: Yes. The NXP part operates across 1.2V to 3.6V and is fully compatible with 3.3V logic systems. However, the quiescent current is higher (40 µA maximum) compared to Texas Instruments variants (1 µA maximum). For power-sensitive applications, Texas Instruments substitutes are preferred.

Q: What are the key differences between 74LCX and 74LVC series?

A: The 74LVC series represents the active evolution of the 74LCX series. Key improvements include lower quiescent current, extended operating temperature range, and wider supply voltage compatibility. The 74LVC10 maintains the same logic function and output drive capability as the 74LCX10, making it a direct functional replacement.

Q: Are all substitutes RoHS compliant?

A: Texas Instruments variants (SN74LVC10ADBR, SN74LVC10APW, SN74LVC10APWR, SN74LVC10APWT) carry RoHS3 compliance certification. The NXP 74LVC10APW,118 does not list RoHS status in the provided specifications. Verify RoHS compliance requirements with your procurement specifications.

Q: Can I use these substitutes in high-temperature applications above 85°C?

A: Yes. All active substitutes operate to 125°C maximum, extending the temperature range beyond the original 74LCX10MTC (-40°C to 85°C). This makes them suitable for industrial and automotive applications requiring higher temperature operation.

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