74VCX132MTCX Equivalent & Substitute Parts

Part Overview

The 74VCX132MTCX is a NAND Gate IC featuring 4 channels with 2 inputs per channel and integrated Schmitt Trigger functionality, manufactured by onsemi in a 14-TSSOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74VCX series operates at low voltage levels (1.4V to 3.6V), making it suitable for battery-powered and portable applications requiring minimal quiescent current.

Substiute Parts

74VCX132MTCX

onsemiIn Stock: 103474VCX132MTCX Datasheet

Current PartRFQ

MC74AC00DR2G

onsemiIn Stock: 18834MC74AC00DR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VCX132MTCX is determined by the following critical parameters:

• Logic Function: NAND Gate with 4 channels and 2 inputs per channel
• Output Drive Capability: 24mA source and sink current
• Supply Voltage Range: Operating voltage compatibility
• Package Type: Surface mount configuration
• Schmitt Trigger Feature: Input hysteresis for noise immunity

The MC74AC00DR2G qualifies as a functional equivalent based on matching logic type (4-channel NAND gate), identical output drive specifications (24mA), and compatible surface mount packaging. However, differences exist in supply voltage range, quiescent current, and propagation delay characteristics that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MC74AC00DR2G is an active product with ROHS3 compliance, providing a viable path forward from the obsolete 74VCX132MTCX. Both components share identical logic function and output drive capability. Selection between these parts depends on application-specific requirements:

Supply Voltage Consideration: The 74VCX132MTCX operates at lower voltage levels (1.4V minimum), while the MC74AC00DR2G requires minimum 2V supply. Applications operating below 2V cannot use the MC74AC00DR2G substitute.

Propagation Delay: The 74VCX132MTCX exhibits faster propagation delay (3.3ns at 3.3V) compared to the MC74AC00DR2G (8ns at 5V). Time-critical applications may require evaluation of this performance difference.

Package Footprint: The 74VCX132MTCX uses 14-TSSOP packaging while the MC74AC00DR2G uses 14-SOIC packaging. PCB layout modifications are required for substitution.

Schmitt Trigger Feature: The 74VCX132MTCX includes Schmitt Trigger input hysteresis; the MC74AC00DR2G does not. Applications requiring noise immunity from Schmitt Trigger inputs cannot directly substitute without functional impact.

Frequently Asked Questions (FAQ)

Q: Can the MC74AC00DR2G directly replace the 74VCX132MTCX in all applications?

A: Direct replacement is not universal. The MC74AC00DR2G is suitable only for applications where supply voltage is 2V or higher, propagation delay of 8ns is acceptable, and Schmitt Trigger input hysteresis is not required. Package differences (14-TSSOP vs. 14-SOIC) require PCB redesign.

Q: What is the primary reason for substitution?

A: The 74VCX132MTCX is classified as obsolete. The MC74AC00DR2G is an active product from the same manufacturer, ensuring long-term availability and supply chain continuity.

Q: Are there compatibility issues with the different package types?

A: Yes. The 14-TSSOP and 14-SOIC packages have different footprints and pin spacing. PCB layout modifications are mandatory for physical substitution.

Q: How do the supply voltage ranges differ?

A: The 74VCX132MTCX operates from 1.4V to 3.6V, while the MC74AC00DR2G operates from 2V to 6V. The MC74AC00DR2G cannot be used in applications requiring operation below 2V supply voltage.

Q: What is the significance of the Schmitt Trigger feature in the 74VCX132MTCX?

A: Schmitt Trigger inputs provide hysteresis, improving noise immunity for slow-rising or slow-falling input signals. The MC74AC00DR2G lacks this feature, which may impact performance in noisy environments.

Q: Does the MC74AC00DR2G offer better compliance status?

A: Yes. The MC74AC00DR2G is ROHS3 compliant and carries active product status, providing better long-term support and regulatory alignment compared to the obsolete 74VCX132MTCX.