74VCX32M OR Gate IC Equivalent & Substitute Parts

Part Overview

The 74VCX32M is a 4-channel 2-input OR 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 74VCX32M operates across a supply voltage range of 1.2V to 3.6V with a maximum propagation delay of 2.8ns at 3.3V with 30pF load. Substitute parts must maintain functional equivalence in logic operation, pin configuration, and electrical performance within the specified operating parameters.

Key Parameters

Parameter	74VCX32M
Logic Type	OR 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-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 74VCX32M are qualified based on the following critical parameters:

Logic function: 4-channel 2-input OR gate
Pin count and package footprint: 14-pin SOIC with 0.154" (3.90mm) width
Supply voltage compatibility: Minimum 1.65V to 3.6V (encompasses 74VCX32M range of 1.2V to 3.6V)
Output drive capability: 24mA minimum for both high and low states
Input logic thresholds: 0.7V ~ 0.8V (low), 1.6V ~ 2V (high)
Operating temperature range: -40°C to 85°C
Propagation delay: Maximum 2.8ns at 3.3V with specified load

All substitute parts listed operate within these electrical and mechanical boundaries, ensuring functional interchangeability in applications designed for the 74VCX32M.

Parameter Comparison

Parameter	74VCX32M	74ALVC32D,118	74ALVC32D-Q100J	SN74ALVC32D	SN74ALVC32DR	SN74ALVC32NSR
Manufacturer	onsemi	Nexperia USA Inc.	Nexperia USA Inc.	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	OR Gate	OR Gate	OR Gate	OR Gate	OR Gate	OR Gate
Number of Circuits	4	4	4	4	4	4
Number of Inputs	2	2	2	2	2	2
Voltage - Supply	1.2V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Current - Quiescent (Max)	20 µA	10 µA	10 µA	10 µA	10 µA	10 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	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V
Input Logic Level - High	1.6V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V
Max Propagation Delay @ V, Max CL	2.8ns @ 3.3V, 30pF	2ns @ 3.3V, 50pF	2.8ns @ 3.3V, 50pF	2.8ns @ 3.3V, 50pF	2.8ns @ 3.3V, 50pF	2.8ns @ 3.3V, 50pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.209", 5.30mm Width)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 compliance, providing long-term availability and environmental regulatory alignment. The 74ALVC32 series from both Nexperia and Texas Instruments represents the direct functional successor to the obsolete 74VCX32M.

For standard industrial applications, SN74ALVC32D, SN74ALVC32DR, and SN74ALVC32NSR from Texas Instruments offer the widest availability and established supply chain support. These parts maintain identical electrical performance to the 74VCX32M while providing improved quiescent current characteristics (10 µA versus 20 µA).

For automotive applications requiring AEC-Q100 qualification, the 74ALVC32D-Q100J from Nexperia is the appropriate selection.

Package footprint consideration: SN74ALVC32NSR uses a 14-SO package with 0.209" (5.30mm) width, differing from the standard 0.154" (3.90mm) width. Verify PCB layout compatibility before selection.

Frequently Asked Questions (FAQ)

Q: Can the 74ALVC32 series directly replace the 74VCX32M without circuit modifications?

A: Yes. All substitute parts maintain identical pin configuration, logic function, and electrical performance within the specified operating parameters. No circuit modifications are required for functional substitution.

Q: What is the primary difference between 74VCX32M and 74ALVC32 series?

A: The 74ALVC32 series represents an active product line with improved power efficiency (10 µA quiescent current versus 20 µA) and full ROHS3 compliance. The 74VCX32M is obsolete and no longer manufactured.

Q: Are there package differences among the substitute parts?

A: Most substitute parts use 14-SOIC packaging with 0.154" (3.90mm) width, matching the 74VCX32M footprint. The exception is SN74ALVC32NSR, which uses 14-SO packaging with 0.209" (5.30mm) width. Verify PCB layout compatibility for this variant.

Q: Which substitute part offers the best availability?

A: SN74ALVC32NSR from Texas Instruments shows the highest inventory level (5140 pcs) among the listed substitutes, followed by SN74ALVC32D (2154 pcs).

Q: Is the 74ALVC32D-Q100J suitable for non-automotive applications?

A: Yes. The 74ALVC32D-Q100J meets all electrical and functional requirements for standard industrial applications. AEC-Q100 qualification is an additional certification that does not restrict use in non-automotive designs.

Q: What is the minimum supply voltage for substitute parts?

A: The 74ALVC32 series operates at 1.65V minimum, compared to 1.2V for the 74VCX32M. Applications requiring operation below 1.65V cannot use these substitutes.

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