74VCX00MTC NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74VCX00MTC is a 4-channel 2-input NAND gate logic IC manufactured by onsemi in a 14-TSSOP surface mount package. This part operates across a 1.2V to 3.6V supply voltage range with a maximum propagation delay of 2.8ns at 3.3V with 30pF load. The 74VCX00MTC is currently obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	1.2V ~ 3.6V
Current - Quiescent (Max)	20 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.7V ~ 0.8V
Input Logic Level - High	1.6V ~ 2V
Max Propagation Delay @ V, Max CL	2.8ns @ 3.3V, 30pF
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 74VCX00MTC is determined by the following critical parameters:

Logic configuration: 4-channel 2-input NAND gate
Package type: 14-TSSOP surface mount
Supply voltage range compatibility
Output drive capability: 24mA minimum
Propagation delay performance
Operating temperature range: -40°C to 85°C
Input/output logic level thresholds

Substitute parts are grouped into two categories:

Direct Substitutes (Identical Electrical Specifications): Parts maintaining the exact 1.2V to 3.6V supply voltage range and 2.8ns propagation delay specification.

Compatible Substitutes (Extended Voltage Range): Parts with 1.65V to 3.6V supply voltage range, which covers the primary operating window of the original part but with slightly different propagation delay characteristics.

Parameter Comparison

Part Number	Manufacturer	Supply Voltage	Quiescent Current (Max)	Output Drive (High/Low)	Propagation Delay @ 3.3V, 30/50pF	Package	Product Status
74VCX00MTC	onsemi	1.2V ~ 3.6V	20 µA	24mA, 24mA	2.8ns @ 30pF	14-TSSOP	Obsolete
74VCX00MTCX	Fairchild Semiconductor	1.2V ~ 3.6V	20 µA	24mA, 24mA	2.8ns @ 30pF	14-TSSOP	Active
74ALVC00PW,118	NXP USA Inc.	1.65V ~ 3.6V	20 µA	24mA, 24mA	2.1ns @ 50pF	14-TSSOP	Active
74ALVC00PW-Q100J	Nexperia USA Inc.	1.65V ~ 3.6V	20 µA	24mA, 24mA	3ns @ 50pF	14-TSSOP	Active
SN74ALVC00DGVR	Texas Instruments	1.65V ~ 3.6V	10 µA	24mA, 24mA	3ns @ 50pF	14-TVSOP	Active
SN74ALVC00IPWRG4Q1	Texas Instruments	1.65V ~ 3.6V	10 µA	24mA, 24mA	3ns @ 50pF	14-TSSOP	Active
SN74ALVC00PWR	Texas Instruments	1.65V ~ 3.6V	10 µA	24mA, 24mA	3ns @ 50pF	14-TSSOP	Active

Engineering Selection Recommendations

Primary Substitute: 74VCX00MTCX (Fairchild Semiconductor) maintains identical electrical specifications to the 74VCX00MTC, including the 1.2V to 3.6V supply voltage range and 2.8ns propagation delay. This part is currently in active production status with 8064 units in stock.

Secondary Substitutes: The 74ALVC series parts (NXP, Nexperia, Texas Instruments) are compatible alternatives with extended voltage range specifications (1.65V to 3.6V). These parts maintain identical output drive capability and operating temperature range. The 74ALVC00PW-Q100J from Nexperia includes AEC-Q100 automotive qualification and is RoHS3 compliant. Texas Instruments variants (SN74ALVC00IPWRG4Q1, SN74ALVC00PWR) feature reduced quiescent current (10 µA) and AEC-Q100 qualification.

Package Consideration: SN74ALVC00DGVR uses a 14-TVSOP package variant instead of 14-TSSOP. Verify PCB footprint compatibility before selection.

Frequently Asked Questions (FAQ)

Q: Can I use 74ALVC00 series parts as direct replacements for 74VCX00MTC?

A: Yes, with voltage range consideration. The 74ALVC00 series operates at 1.65V to 3.6V, which covers the primary operating window of the 74VCX00MTC (1.2V to 3.6V). If your application requires operation below 1.65V, use the 74VCX00MTCX instead.

Q: What is the difference between 14-TSSOP and 14-TVSOP packages?

A: Both are 14-pin surface mount packages with 0.173" width and 4.40mm body width. TSSOP denotes Thin Shrink Small Outline Package, while TVSOP denotes Thin Very Small Outline Package. Verify your PCB footprint specification before selecting SN74ALVC00DGVR.

Q: Why do some substitutes have lower quiescent current?

A: Texas Instruments 74ALVC00 variants specify 10 µA maximum quiescent current compared to 20 µA for the original part. This represents improved power efficiency and is a beneficial characteristic for low-power applications.

Q: Are automotive-qualified versions available?

A: Yes. The 74ALVC00PW-Q100J (Nexperia) and SN74ALVC00IPWRG4Q1 (Texas Instruments) both carry AEC-Q100 automotive qualification.

Q: What is the propagation delay difference between substitutes?

A: The 74VCX00MTCX maintains 2.8ns delay at 30pF load. The 74ALVC00 series parts specify 2.1ns to 3ns at 50pF load. Higher load capacitance (50pF vs 30pF) affects delay measurement conditions. Verify your circuit's actual load capacitance for precise timing analysis.

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