CD74HC4046APWRE4 Equivalent & Substitute Parts

Part Overview

The CD74HC4046APWRE4 is a Phase Lock Loop (PLL) integrated circuit manufactured by Texas Instruments, designed for clock and timing applications. This device operates at a maximum frequency of 38MHz with CMOS input and output, housed in a 16-TSSOP surface mount package. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

CD74HC4046APWRE4

Texas InstrumentsIn Stock: 1126CD74HC4046APWRE4 Datasheet

Current PartRFQ

CD74HC4046APWR

Texas InstrumentsIn Stock: 4458CD74HC4046APWR Datasheet

Parametric EquivalentRFQ

CD74HC4046APWT

Texas InstrumentsIn Stock: 2224CD74HC4046APWT Datasheet

Parametric EquivalentRFQ

74HC4046APW,118

Nexperia USA Inc.In Stock: 654874HC4046APW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74HC4046APWRE4 are classified based on strict parametric equivalence. The primary substitution criteria are:

Critical Parameters for Substitution:

• Package type: 16-TSSOP surface mount configuration
• PLL functionality with single circuit
• CMOS input and output compatibility
• Supply voltage range compatibility
• Operating temperature range
• RoHS3 compliance and MSL rating

Parametric Equivalent Group: Parts CD74HC4046APWR and CD74HC4046APWT maintain identical electrical specifications to the main part, including 38MHz maximum frequency, 1:4 input:output ratio, 2V ~ 6V supply voltage, and -55°C ~ 125°C operating temperature. These differ only in packaging format (Cut Tape & Digi-Reel versus Tape & Reel).

Manufacturer Recommended Group: Part 74HC4046APW,118 from Nexperia USA Inc. shares the same base product number and package type but operates at a reduced maximum frequency of 21MHz, features a different input:output ratio of 2:3, operates with Clock input/output instead of CMOS, and has a narrower supply voltage range of 3V ~ 6V with a reduced operating temperature range of -40°C ~ 125°C.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution: CD74HC4046APWR and CD74HC4046APWT are parametric equivalents to the CD74HC4046APWRE4. Both maintain active product status with Texas Instruments, ensuring long-term availability and supply chain stability. Selection between these two depends on packaging requirements: CD74HC4046APWR is supplied in Cut Tape & Digi-Reel format, while CD74HC4046APWT is supplied in Tape & Reel format. Both are ROHS3 compliant with MSL rating of 1.

For Alternative Selection: The 74HC4046APW,118 from Nexperia USA Inc. is a manufacturer-recommended alternative but introduces functional differences. This part operates at a reduced maximum frequency of 21MHz and features a different input:output ratio of 2:3. The supply voltage range is narrower (3V ~ 6V versus 2V ~ 6V), and the operating temperature range is reduced (-40°C ~ 125°C versus -55°C ~ 125°C). This part is suitable only when application requirements align with these reduced specifications.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4046APWR directly replace CD74HC4046APWRE4? A: Yes. CD74HC4046APWR is a parametric equivalent with identical electrical specifications, including 38MHz maximum frequency, 1:4 input:output ratio, CMOS input/output, 2V ~ 6V supply voltage, and -55°C ~ 125°C operating temperature. The difference is packaging format only.

Q: What is the difference between CD74HC4046APWR and CD74HC4046APWT? A: Both are parametric equivalents with identical electrical specifications. The difference is in packaging: CD74HC4046APWR uses Cut Tape & Digi-Reel packaging, while CD74HC4046APWT uses Tape & Reel packaging. Selection depends on assembly line requirements.

Q: Can 74HC4046APW,118 replace the CD74HC4046APWRE4? A: 74HC4046APW,118 is not a direct equivalent. It operates at 21MHz maximum frequency (versus 38MHz), has a 2:3 input:output ratio (versus 1:4), features Clock input/output (versus CMOS), and has a narrower supply voltage range of 3V ~ 6V. Use this part only if your application requirements are compatible with these reduced specifications.

Q: Are all substitute parts RoHS3 compliant? A: Yes. CD74HC4046APWR, CD74HC4046APWT, and 74HC4046APW,118 are all ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: What is the operating temperature range difference? A: CD74HC4046APWRE4, CD74HC4046APWR, and CD74HC4046APWT all operate from -55°C ~ 125°C. The 74HC4046APW,118 has a narrower range of -40°C ~ 125°C, which may be limiting for applications requiring extended low-temperature operation.

Q: Which substitute has the best availability? A: CD74HC4046APWR has the highest inventory at 4405 pieces, followed by 74HC4046APW,118 at 6451 pieces, and CD74HC4046APWT at 2157 pieces. All three are active products with established supply chains.