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MM74HC4066MTC Equivalent & Substitute Parts
Part Overview
The MM74HC4066MTC is a 4-circuit SPST-NO analog switch IC manufactured by onsemi in 14-TSSOP surface mount packaging. This part features 70Ohm on-state resistance, 1:1 multiplexer/demultiplexer configuration, and operates across 2V to 12V single supply voltage. The device is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST - NO (Single Pole Single Throw - Normally Open) |
| Number of Circuits | 4 |
| Multiplexer/Demultiplexer Configuration | 1:1 |
| On-State Resistance (Max) | 70Ohm |
| Channel-to-Channel Matching (ΔRon) | 5Ohm |
| Supply Voltage Range (Single) | 2V ~ 12V |
| Switch Time (Ton/Toff Max) | 10ns / 30ns |
| -3dB Bandwidth | 100MHz |
| Leakage Current (IS(off) Max) | 20nA |
| Crosstalk | -50dB @ 1MHz |
| Operating Temperature Range | -40°C ~ 85°C |
| Package Type | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MM74HC4066MTC is determined by the following critical parameters:
Primary Compatibility Criteria:
- Switch circuit type: SPST - NO
- Number of circuits: 4
- Multiplexer configuration: 1:1
- Package type: 14-TSSOP surface mount
- On-state resistance: 70Ohm nominal (acceptable range: 70Ohm to 100Ohm maximum)
- Supply voltage range: Minimum 2V ~ 12V coverage
Secondary Performance Criteria:
- Operating temperature range must encompass or exceed -40°C ~ 85°C
- Leakage current and crosstalk specifications must meet or exceed the original performance
- Bandwidth and switching characteristics must support the intended application frequency
Substitute parts are grouped into three categories based on these parameters: direct functional equivalents with identical on-state resistance (70Ohm), compatible alternatives with slightly higher on-state resistance (95Ohm to 100Ohm), and performance-enhanced variants with superior electrical characteristics.
Parameter Comparison
| Part Number | Manufacturer | On-State Resistance (Max) | ΔRon (Max) | Supply Voltage | Operating Temp Range | Bandwidth (-3dB) | Leakage Current (Max) | Crosstalk @ 1MHz | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| MM74HC4066MTC | onsemi | 70Ohm | 5Ohm | 2V ~ 12V | -40°C ~ 85°C | 100MHz | 20nA | -50dB | Obsolete |
| MC74HC4066ADTR2G | onsemi | 70Ohm | 15Ohm | 2V ~ 12V | -55°C ~ 125°C | 160MHz | 100nA | -80dB | Active |
| MC74VHC4066DTR2G | onsemi | 70Ohm | 15Ohm | 2V ~ 12V | -55°C ~ 125°C | 160MHz | 100nA | -80dB | Active |
| 74HC4066PW,118 | Nexperia USA Inc. | 95Ohm | 3Ohm | 2V ~ 10V | -40°C ~ 125°C | 200MHz | 1µA | -60dB | Active |
| 74HC4066PW-Q100,11 | Nexperia USA Inc. | 95Ohm | 3Ohm | 2V ~ 10V | -40°C ~ 125°C | 200MHz | 1µA | -60dB | Active (AEC-Q100) |
| CD74HC4066PW | Texas Instruments | 70Ohm | 500mOhm | 2V ~ 10V | -55°C ~ 125°C | 200MHz | 100nA | -72dB | Last Time Buy |
| CD74HC4066PWR | Texas Instruments | 70Ohm | 500mOhm | 2V ~ 10V | -55°C ~ 125°C | 200MHz | 100nA | -72dB | Active |
| CD74HC4066PWT | Texas Instruments | 70Ohm | 500mOhm | 2V ~ 10V | -55°C ~ 125°C | 200MHz | 100nA | -72dB | Obsolete |
| MAX4610CUD+ | Analog Devices Inc./Maxim Integrated | 100Ohm | 1Ohm | 2V ~ 12V | 0°C ~ 70°C | 300MHz | 100pA | -80dB | Active |
| MAX4610EUD+ | Analog Devices Inc./Maxim Integrated | 100Ohm | 1Ohm | 2V ~ 12V | -40°C ~ 85°C | 300MHz | 100pA | -80dB | Active |
| MAX4610EUD+T | Analog Devices Inc./Maxim Integrated | 100Ohm | 1Ohm | 2V ~ 12V | -40°C ~ 85°C | 300MHz | 100pA | -80dB | Active |
Engineering Selection Recommendations
Tier 1 - Direct Functional Equivalents (Recommended Primary Substitutes)
MC74HC4066ADTR2G and MC74VHC4066DTR2G from onsemi provide direct functional replacement with identical 70Ohm on-state resistance and 1:1 multiplexer configuration. Both parts are in active production status with extended operating temperature ranges (-55°C ~ 125°C) and improved electrical performance characteristics including superior crosstalk isolation (-80dB @ 1MHz) and higher bandwidth (160MHz). These parts maintain full compatibility with the original MM74HC4066MTC pinout and package footprint.
CD74HC4066PWR from Texas Instruments offers an alternative direct equivalent with 70Ohm on-state resistance and active product status. This part features superior channel-to-channel matching (500mOhm ΔRon) and extended temperature range (-55°C ~ 125°C), though supply voltage range is limited to 2V ~ 10V.
Tier 2 - Compatible Alternatives with Higher On-State Resistance
74HC4066PW,118 and 74HC4066PW-Q100,11 from Nexperia USA Inc. provide functional substitution with 95Ohm on-state resistance. The automotive-qualified variant (74HC4066PW-Q100,11) carries AEC-Q100 certification for automotive applications. Both parts feature superior channel-to-channel matching (3Ohm ΔRon) and higher bandwidth (200MHz). Supply voltage range is limited to 2V ~ 10V, which may restrict use in 12V applications.
Tier 3 - Performance-Enhanced Alternatives
MAX4610EUD+ and MAX4610EUD+T from Analog Devices Inc./Maxim Integrated offer enhanced performance with 100Ohm on-state resistance, superior channel-to-channel matching (1Ohm ΔRon), and exceptional leakage current performance (100pA). These parts support the full 2V ~ 12V supply voltage range and feature 300MHz bandwidth. MAX4610EUD+ operates across -40°C ~ 85°C, matching the original part's temperature range. These alternatives are suitable for applications requiring lower leakage current and higher bandwidth performance.
Product Status Considerations
CD74HC4066PW carries Last Time Buy status and should be avoided for new designs. CD74HC4066PWT is obsolete. All other recommended substitutes maintain active production status, ensuring long-term availability and supply chain stability.
Frequently Asked Questions (FAQ)
Q: Can MM74HC4066MTC be directly replaced with MC74HC4066ADTR2G?
A: Yes. Both parts feature identical switch circuit type (SPST - NO), 4-circuit configuration, 1:1 multiplexer topology, 70Ohm on-state resistance, and 14-TSSOP package. MC74HC4066ADTR2G is in active production and offers improved electrical performance with extended operating temperature range.
Q: What is the difference between 74HC4066PW,118 and 74HC4066PW-Q100,11?
A: Both parts are functionally identical with 95Ohm on-state resistance and identical electrical specifications. The primary difference is that 74HC4066PW-Q100,11 carries AEC-Q100 automotive qualification and is supplied in Tape & Reel packaging, while 74HC4066PW,118 is supplied in Cut Tape & Digi-Reel packaging. Selection depends on application requirements and packaging preferences.
Q: Why do some substitutes have higher on-state resistance (95Ohm or 100Ohm) compared to the original 70Ohm?
A: On-state resistance variation reflects different semiconductor process technologies and design approaches across manufacturers. Parts with 95Ohm or 100Ohm resistance remain functionally compatible for most applications, though circuit designs sensitive to signal attenuation or requiring minimal voltage drop should prioritize 70Ohm equivalents (MC74HC4066ADTR2G, CD74HC4066PWR).
Q: Is the supply voltage range difference between 2V ~ 12V and 2V ~ 10V significant?
A: Yes, for applications requiring 12V operation. Nexperia parts (74HC4066PW,118 and 74HC4066PW-Q100,11) are limited to 2V ~ 10V maximum supply voltage. If your design operates at 12V, select onsemi (MC74HC4066ADTR2G, MC74VHC4066DTR2G) or Analog Devices (MAX4610 series) alternatives that support the full 2V ~ 12V range.
Q: What does the ΔRon (channel-to-channel matching) parameter indicate?
A: ΔRon represents the maximum variation in on-state resistance between different switch channels within the same IC. Lower ΔRon values indicate better channel uniformity. The original MM74HC4066MTC specifies 5Ohm ΔRon. Substitutes with 3Ohm, 1Ohm, or 500mOhm ΔRon provide equal or superior matching performance.
Q: Can MAX4610EUD+ replace MM74HC4066MTC in all applications?
A: MAX4610EUD+ is functionally compatible with identical switch topology and package, but features 100Ohm on-state resistance versus the original 70Ohm. Applications with strict impedance or signal attenuation requirements should evaluate circuit performance impact. MAX4610EUD+ offers superior leakage current (100pA versus 20nA) and higher bandwidth (300MHz versus 100MHz), making it suitable for high-frequency or low-leakage applications.
Q: What packaging options are available for substitute parts?
A: All substitute parts maintain 14-TSSOP surface mount packaging compatible with the original footprint. Packaging variants include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel, and Tube. Selection depends on production volume and assembly process requirements. Tape & Reel packaging is standard for high-volume manufacturing.
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