74HCT597N,652 Equivalent & Substitute Parts

Part Overview

The 74HCT597N,652 is an 8-bit shift register logic IC manufactured by NXP USA Inc., housed in a 16-DIP through-hole package. This component functions as a parallel or serial to serial converter, operating within a 4.5V to 5.5V supply voltage range and supporting temperatures from -40°C to 125°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

74HCT597N,652

NXP USA Inc.In Stock: 96474HCT597N,652 Datasheet

Current PartRFQ

CD74HCT166E

Harris CorporationIn Stock: 2151CD74HCT166E Datasheet

DirectRFQ

CD74HCT597E

Harris CorporationIn Stock: 1332CD74HCT597E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HCT597N,652 are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Logic type classification (Shift Register)
• Bit configuration (8-bit, single element)
• Supply voltage range (4.5V ~ 5.5V)
• Output configuration (Push-Pull)
• Package form factor (16-DIP, 0.300" pitch)
• Series compatibility (74HCT logic family)

Both identified substitutes—CD74HCT166E and CD74HCT597E—maintain these core parameters, ensuring functional equivalence in circuit applications. The CD74HCT597E represents the direct manufacturer-recommended equivalent, sharing the identical base product number (74HCT597) with the original part.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT597E is the manufacturer-recommended substitute, sharing the identical base product number (74HCT597) with the original NXP part. This direct equivalence ensures functional compatibility in all circuit applications where the 74HCT597N,652 was originally specified.

The CD74HCT166E provides an alternative shift register option within the 74HCT family, maintaining all critical electrical parameters and package specifications. However, this part implements a different functional configuration (Parallel In Serial Out versus the original's Parallel or Serial to Serial capability), requiring circuit-level verification for specific applications.

Both Harris Corporation substitutes operate across an extended temperature range (-55°C to 125°C) compared to the original part (-40°C to 125°C), providing enhanced thermal performance. Both substitutes are RoHS non-compliant, whereas the original NXP part carries ROHS3 compliance certification. Applications requiring RoHS compliance should evaluate alternative modern logic families rather than these obsolete substitutes.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT597E directly replace the 74HCT597N,652 without circuit modification?

A: Yes. The CD74HCT597E shares identical electrical specifications, package form factor, and base product number (74HCT597), enabling direct pin-compatible substitution in existing circuit designs.

Q: What is the functional difference between CD74HCT166E and CD74HCT597E?

A: Both are 8-bit shift registers within the 74HCT family. The CD74HCT166E implements Parallel In Serial Out functionality, while the CD74HCT597E implements Parallel to Serial conversion. The original 74HCT597N,652 supports Parallel or Serial to Serial operation. Application requirements determine which substitute is appropriate.

Q: Are there RoHS-compliant alternatives to these obsolete parts?

A: The identified substitutes (CD74HCT166E and CD74HCT597E) are RoHS non-compliant. For new designs requiring RoHS compliance, evaluation of modern logic families beyond the 74HCT series is necessary.

Q: Do the Harris Corporation substitutes require different PCB footprints?

A: No. Both CD74HCT166E and CD74HCT597E use the standard 16-DIP (0.300", 7.62mm) package, maintaining identical PCB footprint compatibility with the original 74HCT597N,652.

Q: What is the temperature operating range difference between the original and substitutes?

A: The original 74HCT597N,652 operates from -40°C to 125°C. Both Harris substitutes extend the lower temperature limit to -55°C, providing a 15°C wider operating range at low temperatures while maintaining the same 125°C upper limit.