74HCT32T14-13 Equivalent & Substitute Parts

Part Overview

The 74HCT32T14-13 is a 4-channel 2-input OR gate logic IC manufactured by Diodes Incorporated in 14-TSSOP surface mount packaging. This device is actively produced and widely used in digital logic applications requiring OR gate functionality with TTL-compatible input and output levels. Substitute parts are necessary when the primary part is unavailable, when alternative manufacturers' stock levels are higher, or when specific operational characteristics such as propagation delay or quiescent current are critical to system performance.

Substiute Parts

74HCT32T14-13

Diodes IncorporatedIn Stock: 3033374HCT32T14-13 Datasheet

Current PartRFQ

74HCT32T14-13

Diodes IncorporatedIn Stock: 3033374HCT32T14-13 Datasheet

Parametric EquivalentRFQ

74HCT32PW,118

NXP SemiconductorsIn Stock: 609774HCT32PW,118 Datasheet

DirectRFQ

MC74HCT32ADTR2G

onsemiIn Stock: 2463MC74HCT32ADTR2G Datasheet

DirectRFQ

MM74HCT32MTCX

Fairchild SemiconductorIn Stock: 9662MM74HCT32MTCX Datasheet

DirectRFQ

SN74HCT32PWR

Texas InstrumentsIn Stock: 2143SN74HCT32PWR Datasheet

DirectRFQ

74HCT32PW-Q100,118

Nexperia USA Inc.In Stock: 529074HCT32PW-Q100,118 Datasheet

MFR RecommendedRFQ

SN74HCT32PW

Texas InstrumentsIn Stock: 1742SN74HCT32PW Datasheet

MFR RecommendedRFQ

SN74HCT32PWT

Texas InstrumentsIn Stock: 1571SN74HCT32PWT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT32T14-13 is determined by the following criteria:

Functional Equivalence: All substitute parts must be 4-channel 2-input OR gates with the 74HCT32 base product number, ensuring identical logic functionality.

Electrical Compatibility: Supply voltage range (4.5V ~ 5.5V), input logic levels (Low: 0.8V, High: 2V), and output current specifications (4mA minimum) must be maintained or exceeded.

Package Compatibility: All substitutes must use 14-TSSOP surface mount packaging with identical physical dimensions (0.173", 4.40mm Width) to ensure PCB footprint compatibility.

Environmental Compliance: All substitutes must maintain ROHS3 compliance and MSL 1 rating for moisture sensitivity.

Operational Characteristics: Propagation delay, quiescent current, and operating temperature range may vary within acceptable limits for the 74HCT logic family while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status)

MC74HCT32ADTR2G (onsemi) and 74HCT32PW-Q100,118 (Nexperia USA Inc.) are the preferred substitutes. Both maintain active product status, ROHS3 compliance, and MSL 1 rating. MC74HCT32ADTR2G offers superior propagation delay performance (15ns) and extended lower operating temperature range (-55°C). The 74HCT32PW-Q100,118 includes AEC-Q100 automotive qualification and matches the original part's propagation delay specification (24ns @ 4.5V).

Secondary Substitutes (Active Status)

SN74HCT32PWR (Texas Instruments) and MM74HCT32MTCX (Fairchild Semiconductor) remain active alternatives. SN74HCT32PWR provides Tape & Reel packaging with 22ns propagation delay. MM74HCT32MTCX offers higher output current capability (4.8mA) but operates to 85°C maximum temperature.

Discontinued Parts

SN74HCT32PW and SN74HCT32PWT are discontinued at DiGi Electronics and should not be selected for new designs. Existing inventory may be available through alternative distribution channels.

Packaging Considerations

74HCT32PW,118 (NXP Semiconductors) is supplied in Bulk packaging rather than Tape & Reel, requiring manual handling and tape conversion for automated assembly processes. SN74HCT32PW uses Tube packaging, also unsuitable for high-volume automated production.

Frequently Asked Questions (FAQ)

Q: Can I substitute any 74HCT32 variant for the 74HCT32T14-13?

A: No. Substitution is limited to parts with identical 14-TSSOP surface mount packaging. Variants with different package types (DIP, SOIC, QFP) or different pin counts are not compatible with the original PCB footprint.

Q: What is the significance of the propagation delay differences between substitutes?

A: Propagation delay determines the maximum speed at which the OR gate can switch outputs in response to input changes. The 74HCT32T14-13 specifies 24ns @ 4.5V, 50pF. Substitutes with lower propagation delay (such as MC74HCT32ADTR2G at 15ns) will operate faster and are functionally compatible. Substitutes with higher propagation delay must not exceed system timing requirements.

Q: Are all substitutes ROHS3 compliant?

A: All listed active substitutes maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, matching the original part's environmental specifications.

Q: What is the difference between Tape & Reel and Bulk packaging?

A: Tape & Reel packaging is formatted for automated pick-and-place assembly equipment. Bulk packaging requires manual handling and tape conversion. For production environments using automated assembly, Tape & Reel variants (74HCT32T14-13, MC74HCT32ADTR2G, SN74HCT32PWR, 74HCT32PW-Q100,118, SN74HCT32PWT) are required.

Q: Does the 74HCT32PW-Q100,118 automotive qualification affect its use in non-automotive applications?

A: No. AEC-Q100 qualification indicates the part meets automotive industry reliability standards and is suitable for automotive applications. It remains fully compatible with general industrial and consumer applications.

Q: Which substitute offers the best performance characteristics?

A: MC74HCT32ADTR2G provides the lowest quiescent current (1 µA) and fastest propagation delay (15ns @ 5V, 50pF), with extended operating temperature range to -55°C. Selection depends on specific system requirements for power consumption, speed, and temperature range.