74HC4046AD,652 Phase Lock Loop IC - Equivalent & Substitute Parts

Part Overview

The 74HC4046AD,652 is a Phase Lock Loop (PLL) integrated circuit manufactured by Nexperia USA Inc., designed for clock and timing applications. This 16-SOIC surface mount device operates at a maximum frequency of 21MHz with a 2:3 input-to-output ratio and supports supply voltages from 3V to 6V across an operating temperature range of -40°C to 125°C.

The 74HC4046AD,652 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements. Active alternatives from Texas Instruments provide enhanced performance specifications while maintaining functional compatibility within the 74HC and 74LV series families.

Substiute Parts

74HC4046AD,652

Nexperia USA Inc.In Stock: 81274HC4046AD,652 Datasheet

Current PartRFQ

CD74HC4046AM

Texas InstrumentsIn Stock: 1704CD74HC4046AM Datasheet

UpgradeRFQ

CD74HC4046AM96

Texas InstrumentsIn Stock: 19600CD74HC4046AM96 Datasheet

UpgradeRFQ

CD74HC4046AMT

Texas InstrumentsIn Stock: 1301CD74HC4046AMT Datasheet

UpgradeRFQ

SN74LV4046AD

Texas InstrumentsIn Stock: 1237SN74LV4046AD Datasheet

SimilarRFQ

SN74LV4046ADR

Texas InstrumentsIn Stock: 3220SN74LV4046ADR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC4046AD,652 are classified into two categories based on electrical and mechanical compatibility:

Upgrade Substitutes (74HC Series - Direct Functional Replacement): CD74HC4046AM, CD74HC4046AM96, and CD74HC4046AMT are manufactured by Texas Instruments and belong to the same 74HC series. These parts maintain identical package geometry (16-SOIC), mounting type (Surface Mount), and base product number (74HC4046). All three are classified as Active products with enhanced maximum frequency specifications (38MHz versus 21MHz). The key parameters determining substitution eligibility are: identical package/case dimensions, matching mounting type, compatible supply voltage range (2V ~ 6V encompasses the original 3V ~ 6V requirement), and overlapping operating temperature range (-55°C ~ 125°C exceeds the original -40°C ~ 125°C). These parts differ only in packaging format (Tube, Cut Tape & Digi-Reel, or Tape & Reel).

Similar Substitutes (74LV Series - Functional Alternative): SN74LV4046AD and SN74LV4046ADR are manufactured by Texas Instruments and belong to the 74LV series. These parts maintain identical package geometry (16-SOIC), mounting type (Surface Mount), and maximum frequency (38MHz). The 74LV series operates at a narrower supply voltage range (3V ~ 5.5V) compared to the original 3V ~ 6V specification, making them suitable for applications within the 3V ~ 5.5V window. The input-to-output ratio differs (1:3 versus 2:3), representing a functional variation. These parts are classified as Active and differ in packaging format (Tube or Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (74HC Series): The CD74HC4046AM, CD74HC4046AM96, and CD74HC4046AMT are recommended as primary substitutes for the obsolete 74HC4046AD,652. All three parts are manufactured by Texas Instruments, classified as Active products, and maintain ROHS3 compliance and MSL 1 rating. These parts are electrically and mechanically compatible with the original design. Selection among these three variants depends solely on packaging requirements: CD74HC4046AM (Tube packaging), CD74HC4046AM96 (Cut Tape & Digi-Reel packaging), or CD74HC4046AMT (Tape & Reel packaging). The enhanced maximum frequency specification (38MHz) provides additional performance margin beyond the original 21MHz requirement.

For Voltage-Constrained Applications (74LV Series): The SN74LV4046AD and SN74LV4046ADR are suitable substitutes for applications operating within the 3V ~ 5.5V supply voltage range. Both parts are manufactured by Texas Instruments and classified as Active. These parts maintain ROHS3 compliance and MSL 1 rating. Selection between SN74LV4046AD (Tube packaging) and SN74LV4046ADR (Tape & Reel packaging) depends on packaging requirements. The 74LV series is not recommended for applications requiring the full 6V supply voltage capability of the original part.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC4046AM series parts directly replace the 74HC4046AD,652 without circuit modifications?

A: Yes. The CD74HC4046AM, CD74HC4046AM96, and CD74HC4046AMT are direct functional replacements. All three maintain identical package geometry (16-SOIC), pin configuration, mounting type (Surface Mount), and supply voltage compatibility (2V ~ 6V encompasses the original 3V ~ 6V range). No circuit modifications are required. The only differences are packaging format and enhanced maximum frequency specification (38MHz versus 21MHz).

Q: What is the difference between CD74HC4046AM, CD74HC4046AM96, and CD74HC4046AMT?

A: These three parts are electrically identical. The differences are packaging formats only: CD74HC4046AM is supplied in Tube packaging, CD74HC4046AM96 is supplied in Cut Tape & Digi-Reel packaging, and CD74HC4046AMT is supplied in Tape & Reel packaging. Selection depends on your procurement and assembly process requirements.

Q: Can the SN74LV4046AD or SN74LV4046ADR replace the 74HC4046AD,652 in all applications?

A: The SN74LV4046AD and SN74LV4046ADR are suitable substitutes only for applications operating within the 3V ~ 5.5V supply voltage range. If your design requires operation at 6V, these parts are not compatible. Both maintain identical package geometry and mounting type. The input-to-output ratio differs (1:3 versus 2:3), which may affect circuit behavior depending on your specific application requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 74HC4046AD,652 and all listed substitute parts (CD74HC4046AM, CD74HC4046AM96, CD74HC4046AMT, SN74LV4046AD, and SN74LV4046ADR) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference between the 74HC and 74LV series?

A: The 74HC series operates at 2V ~ 6V supply voltage with CMOS input/output logic levels. The 74LV series operates at 3V ~ 5.5V supply voltage with CMOS and TTL compatible input/output logic levels. The 74LV series is designed for lower voltage applications and provides TTL compatibility, while the 74HC series supports a wider voltage range.

Q: Which substitute part has the highest inventory availability?

A: CD74HC4046AM96 has the highest inventory availability with 19,557 pieces in stock, followed by SN74LV4046ADR with 3,209 pieces, CD74HC4046AM with 1,656 pieces, SN74LV4046AD with 1,166 pieces, and CD74HC4046AMT with 1,199 pieces.