74AC373PC Equivalent & Substitute Parts

Part Overview

The 74AC373PC is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 channel configuration with tri-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The 20-DIP package format and core logic functionality remain consistent across qualified substitutes, enabling direct replacement in compatible applications.

Substiute Parts

74AC373PC

onsemiIn Stock: 142374AC373PC Datasheet

Current PartRFQ

SN74AC373N

Texas InstrumentsIn Stock: 3275SN74AC373N Datasheet

DirectRFQ

CD74AC373E

Harris CorporationIn Stock: 4077CD74AC373E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74AC373PC is determined by the following critical parameters: logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), package format (20-DIP), mounting method (through hole), and output current capability (24mA minimum). All qualified substitutes maintain these core electrical and mechanical specifications, ensuring functional compatibility within the same application context.

The 74AC series base product number indicates a family of compatible logic devices. Substitutes are classified as direct equivalents when all critical parameters align within specified tolerances. Voltage supply range, propagation delay, and operating temperature range variations are acceptable within the constraints of the target application requirements.

Parameter Comparison

Engineering Selection Recommendations

The SN74AC373N (Texas Instruments) is the primary substitute for the 74AC373PC. This part maintains active product status, ensuring long-term availability and supply chain stability. The SN74AC373N meets ROHS3 compliance requirements, supporting modern manufacturing and environmental standards. Electrical parameters align within acceptable tolerances, with propagation delay of 7.5ns compared to the original 7ns specification.

The CD74AC373E (Harris Corporation) provides an alternative substitute with extended operating temperature range (-55°C ~ 125°C) and faster propagation delay (3ns). However, this part carries obsolete status and RoHS non-compliance designation, limiting its suitability for new designs or applications requiring regulatory compliance.

For applications requiring active product status and regulatory compliance, the SN74AC373N is the recommended selection. For applications with extended temperature requirements and where RoHS compliance is not mandated, the CD74AC373E remains functionally compatible.

Frequently Asked Questions (FAQ)

Q: Can the SN74AC373N directly replace the 74AC373PC without circuit modifications?

A: Yes. Both parts share identical logic type, circuit configuration, output type, package format, and output current specifications. The 7.5ns propagation delay of the SN74AC373N is within acceptable tolerance of the original 7ns specification for standard logic applications.

Q: What is the primary advantage of selecting SN74AC373N over CD74AC373E?

A: The SN74AC373N maintains active product status and ROHS3 compliance, ensuring continued availability and compatibility with modern manufacturing processes and environmental regulations. The CD74AC373E, while functionally compatible, carries obsolete status and RoHS non-compliance designation.

Q: Are there package or pinout differences between these substitutes?

A: No. All three parts use the 20-DIP (0.300", 7.62mm) package format with identical through-hole mounting specifications. Pinout compatibility is maintained across all substitutes.

Q: Does the voltage supply range difference between 74AC373PC (2V ~ 6V) and CD74AC373E (1.5V ~ 5.5V) affect substitution?

A: The CD74AC373E supports a lower minimum voltage (1.5V vs 2V) but a lower maximum voltage (5.5V vs 6V). Substitution is valid only when the application operates within the overlapping range of 2V ~ 5.5V. Applications requiring operation above 5.5V must use the 74AC373PC or SN74AC373N.

Q: Which substitute is recommended for new product designs?

A: The SN74AC373N is recommended for new designs due to active product status, ROHS3 compliance, and established supply chain availability from Texas Instruments.