74HC237N,652 Equivalent & Substitute Parts

Part Overview

The 74HC237N,652 is a decoder/demultiplexer logic integrated circuit manufactured by NXP Semiconductors. This device implements a 1 x 3:8 decoder function in a 16-DIP through-hole package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repairs, and legacy product support. Substitute parts must maintain functional equivalence through matching decoder architecture, electrical performance, and supply voltage specifications.

Substiute Parts

74HC237N,652

NXP SemiconductorsIn Stock: 120974HC237N,652 Datasheet

Current PartRFQ

CD74HC237E

Harris CorporationIn Stock: 1406CD74HC237E Datasheet

UpgradeRFQ

74HC237D,652

NXP SemiconductorsIn Stock: 5006174HC237D,652 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC237N,652 are qualified based on the following criteria:

Functional Equivalence: All substitute parts must implement the same 1 x 3:8 decoder/demultiplexer architecture with a single independent circuit.

Electrical Compatibility: Output current specifications (5.2mA high/low) and supply voltage range (2V ~ 6V) must be maintained or exceeded.

Series Compatibility: All qualified substitutes belong to the 74HC logic family, ensuring consistent CMOS technology and electrical characteristics.

Package Consideration: Substitutes may differ in mounting type (through-hole versus surface mount) and physical package dimensions, provided the functional pinout remains compatible with the application context.

Temperature Range: Operating temperature specifications must support the required application range; substitutes with extended or equivalent temperature ranges are acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole Applications: The CD74HC237E provides functional equivalence with identical package dimensions (16-PDIP, 0.300" pitch) and extended operating temperature range (-55°C ~ 125°C). However, this part is obsolete and RoHS non-compliant. Selection should be based on inventory availability and regulatory requirements of the end application.

For Active Production and Surface Mount Conversion: The 74HC237D,652 is the manufacturer-recommended substitute. This part is active, maintains full electrical compatibility, and is available in high volume (49,961 pcs in stock). The transition from 16-DIP through-hole to 16-SOIC surface mount requires PCB redesign but provides access to current manufacturing and supply chain stability.

Compliance Considerations: The main part (74HC237N,652) is ROHS3 compliant. The CD74HC237E is RoHS non-compliant and may not be suitable for applications with regulatory compliance requirements. The 74HC237D,652 status is not specified in provided data; compliance verification is required before selection for regulated applications.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC237E directly replace the 74HC237N,652 in existing through-hole PCBs?

A: Yes, the CD74HC237E is pin-compatible and functionally equivalent. Both parts use 16-DIP packages with 0.300" (7.62mm) pitch. However, verify RoHS compliance requirements for your application, as the CD74HC237E is RoHS non-compliant.

Q: What is the primary advantage of the 74HC237D,652 over the main part?

A: The 74HC237D,652 is an active product with high inventory availability (49,961 pcs), ensuring long-term supply chain access. It maintains full electrical compatibility and identical operating temperature range. The trade-off is the package change from through-hole DIP to surface-mount SOIC, requiring PCB redesign.

Q: Are all three parts electrically interchangeable?

A: All three parts share identical decoder architecture (1 x 3:8), output current specifications (5.2mA), and supply voltage range (2V ~ 6V). Electrical interchangeability is confirmed. Physical package differences (DIP versus SOIC) require mechanical compatibility assessment.

Q: Which substitute should I select for new designs?

A: The 74HC237D,652 is recommended for new designs due to active product status and high availability. This part requires surface-mount assembly capability but provides supply chain stability and compliance with current manufacturing standards.

Q: Does the extended temperature range of the CD74HC237E (-55°C ~ 125°C) provide an advantage?

A: The extended lower temperature limit (-55°C versus -40°C) is beneficial only if your application requires operation below -40°C. For standard industrial and commercial temperature ranges, the main part and 74HC237D,652 specifications are sufficient.