CD74HC4046AMT Phase Lock Loop IC Equivalent & Substitute Parts

Part Overview

The CD74HC4046AMT is a Phase Lock Loop (PLL) integrated circuit manufactured by Texas Instruments, designed for clock and timing applications. This 16-SOIC surface mount device operates at frequencies up to 38MHz with a 1:4 input-to-output ratio and supports supply voltages from 2V to 6V. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the primary part experiences inventory constraints, extended lead times, or when alternative packaging formats better suit manufacturing requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

CD74HC4046AMT

Texas InstrumentsIn Stock: 1301CD74HC4046AMT Datasheet

Current PartRFQ

CD74HC4046AM96

Texas InstrumentsIn Stock: 19600CD74HC4046AM96 Datasheet

Parametric EquivalentRFQ

CD74HC7046AMT

Texas InstrumentsIn Stock: 993CD74HC7046AMT Datasheet

Parametric EquivalentRFQ

74HC4046AD,653

NXP SemiconductorsIn Stock: 7795474HC4046AD,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC4046AMT is determined by the following critical parameters:

Primary Substitution Criteria:

• Package / Case: 16-SOIC (0.154", 3.90mm Width) form factor
• Mounting Type: Surface Mount
• Type: Phase Lock Loop (PLL)
• Input/Output: CMOS logic levels
• Number of Circuits: 1
• Voltage - Supply: Compatible range (minimum 2V, maximum 6V)
• Frequency - Max: Minimum 38MHz capability
• Ratio - Input:Output: 1:4 configuration

Secondary Considerations:

• Operating Temperature range compatibility
• RoHS and REACH compliance status
• Moisture Sensitivity Level (MSL)

Parts are grouped as parametric equivalents when all primary criteria match exactly. Parts with deviations in frequency ratio or maximum frequency are classified separately based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

CD74HC4046AM96 (Parametric Equivalent - Preferred Alternative)

This part is a direct parametric equivalent to the CD74HC4046AMT with identical electrical specifications: 38MHz maximum frequency, 1:4 input-to-output ratio, 2V to 6V supply voltage, and -55°C to 125°C operating temperature range. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Both are ROHS3 compliant with MSL 1 rating. This substitute is suitable for applications requiring the same electrical performance with alternative tape packaging.

CD74HC7046AMT (Parametric Equivalent - Functional Variant)

This Texas Instruments part maintains identical frequency, voltage, temperature, and package specifications as the main part. The key difference is the input-to-output ratio of 1:2 instead of 1:4. This part is suitable only for applications where a 1:2 frequency division ratio is acceptable. Both parts are ROHS3 compliant with MSL 1 rating and active product status.

74HC4046AD,653 (Manufacturer-Recommended Alternative - Limited Compatibility)

This NXP Semiconductors part shares the same 16-SOIC package and surface mount configuration. However, it has a reduced maximum frequency of 21MHz (versus 38MHz), a narrower supply voltage range of 3V to 6V (versus 2V to 6V), and a reduced operating temperature minimum of -40°C (versus -55°C). This part is suitable only for applications operating within these reduced specifications. Bulk packaging format differs from tape formats of other alternatives.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4046AM96 be used as a direct replacement for CD74HC4046AMT?

A: Yes. Both parts have identical electrical specifications including 38MHz maximum frequency, 1:4 input-to-output ratio, 2V to 6V supply voltage, and -55°C to 125°C operating temperature. The difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). PCB layout and soldering processes remain unchanged.

Q: What is the key difference between CD74HC4046AMT and CD74HC7046AMT?

A: The input-to-output frequency ratio differs: CD74HC4046AMT provides 1:4 division while CD74HC7046AMT provides 1:2 division. All other electrical parameters including maximum frequency (38MHz), supply voltage (2V to 6V), and operating temperature (-55°C to 125°C) are identical. Selection depends on required frequency division ratio for the application.

Q: Is 74HC4046AD,653 from NXP a suitable replacement?

A: Substitution is conditional. The NXP part operates at a reduced maximum frequency of 21MHz and requires a minimum supply voltage of 3V (versus 2V for Texas Instruments versions). Applications operating at frequencies above 21MHz or requiring 2V supply operation cannot use this part. Verify application frequency and voltage requirements before selection.

Q: Are all substitute parts ROHS3 compliant?

A: CD74HC4046AM96 and CD74HC7046AMT are confirmed ROHS3 compliant. The NXP part (74HC4046AD,653) does not specify RoHS status in available documentation. Verify compliance requirements for your application before final selection.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Both are surface mount tape formats suitable for automated pick-and-place assembly. Tape & Reel (TR) provides continuous reel format for high-volume production. Cut Tape (CT) & Digi-Reel® provides smaller quantities in tape format. PCB assembly compatibility is identical; selection depends on order quantity and production volume requirements.

Q: Can these parts be used interchangeably in existing designs?

A: CD74HC4046AM96 is a direct electrical and mechanical replacement. CD74HC7046AMT requires verification that the 1:2 frequency ratio meets circuit requirements. The NXP part (74HC4046AD,653) requires confirmation that application frequency does not exceed 21MHz and that minimum supply voltage is 3V or higher. Always verify frequency ratio and operating parameter requirements before substitution.