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PS4066ACSD Equivalent & Substitute Parts
Part Overview
The PS4066ACSD is a 4-circuit SPST-NO analog switch IC manufactured by Diodes Incorporated in 14-SOIC surface mount packaging. This device functions as a single-pole single-throw switch with 45Ohm on-state resistance and operates across a 3V to 16V supply range. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | PS4066ACSD Value |
|---|---|
| Switch Circuit Type | SPST - NO |
| Number of Circuits | 4 |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| On-State Resistance (Max) | 45Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm |
| Voltage - Supply, Single (V+) | 3V ~ 16V |
| Switch Time (Ton, Toff) (Max) | 100ns, 75ns |
| -3dB Bandwidth | 100MHz |
| Charge Injection | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 9pF, 9pF |
| Current - Leakage (IS(off)) (Max) | 100pA |
| Crosstalk | -86dB @ 1MHz |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution of the PS4066ACSD is determined by the following criteria:
Mandatory Requirements:
- Switch circuit type: SPST - NO
- Number of circuits: 4
- Multiplexer/Demultiplexer circuit: 1:1
- Package / Case: 14-SOIC (0.154", 3.90mm Width)
- Mounting type: Surface Mount
Electrical Compatibility Criteria:
- On-state resistance must not exceed application requirements
- Supply voltage range must encompass or exceed 3V ~ 16V operating window
- Switch timing, bandwidth, and leakage characteristics must meet or exceed performance needs
- Channel capacitance and crosstalk performance must be acceptable for signal integrity
Compliance Considerations:
- RoHS compliance status (original part is non-compliant; substitutes may be compliant)
- Product status (active vs. obsolete/last-time-buy)
- Operating temperature range extension
Parameter Comparison
| Part Number | Manufacturer | On-State Resistance (Max) | Supply Voltage (V+) | Switch Time Ton/Toff (Max) | -3dB Bandwidth | Leakage (IS(off)) (Max) | Operating Temp | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| PS4066ACSD | Diodes Incorporated | 45Ohm | 3V ~ 16V | 100ns, 75ns | 100MHz | 100pA | 0°C ~ 70°C | Obsolete | RoHS non-compliant |
| 74HC4066D,653 | Nexperia USA Inc. | 95Ohm | 2V ~ 10V | 30ns, 20ns | 200MHz | 1µA | -40°C ~ 125°C | Active | ROHS3 Compliant |
| 74HCT4066D,118 | Nexperia USA Inc. | 20Ohm (Typ) | 4.5V ~ 5.5V | 44ns, 30ns | 200MHz | 1µA | -40°C ~ 125°C | Active | ROHS3 Compliant |
| 74LV4066D,118 | Nexperia USA Inc. | 35Ohm | 1V ~ 6V | 16ns, 28ns | 200MHz | 2µA | -40°C ~ 125°C | Active | ROHS3 Compliant |
| 74LVC4066D,118 | Nexperia USA Inc. | 10Ohm | 1.65V ~ 5.5V | 3.9ns, 5ns | 500MHz | 5µA | -40°C ~ 125°C | Active | ROHS3 Compliant |
| CD74HCT4066M96 | Texas Instruments | 70Ohm | 4.5V ~ 5.5V | — | 200MHz | 100nA | -55°C ~ 125°C | Active | ROHS3 Compliant |
| CD74HCT4066MT | Texas Instruments | 70Ohm | 4.5V ~ 5.5V | — | 200MHz | 100nA | -55°C ~ 125°C | Last Time Buy | ROHS3 Compliant |
| CD74HCT4066QM96Q1 | Texas Instruments | 95Ohm | 4.5V ~ 5.5V | 24ns, 35ns | 200MHz | — | -40°C ~ 125°C | Last Time Buy | ROHS3 Compliant |
| D24066QM96G4Q1 | Texas Instruments | 95Ohm | 4.5V ~ 5.5V | 24ns, 35ns | 200MHz | — | -40°C ~ 125°C | Last Time Buy | ROHS3 Compliant |
| HEF4066BT,653 | Nexperia USA Inc. | 155Ohm | 3V ~ 15V | — | 90MHz | 200nA | -40°C ~ 125°C | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Voltage Range Compatibility (3V ~ 16V Operation):
The HEF4066BT,653 maintains the widest supply voltage range (3V ~ 15V) closest to the original PS4066ACSD specification. This part is active and RoHS3 compliant, making it suitable for new designs requiring extended voltage operation. On-state resistance of 155Ohm is higher than the original 45Ohm, requiring verification against load impedance requirements.
For 5V-Centric Applications:
The 74HCT4066D,118 and CD74HCT4066M96 are optimized for 5V operation (4.5V ~ 5.5V supply range). Both are active products with RoHS3 compliance. The 74HCT4066D,118 offers lower on-state resistance (20Ohm typical) and faster switching, while CD74HCT4066M96 provides lower leakage current (100nA) and extended temperature range (-55°C ~ 125°C).
For Low-Voltage Applications (1V ~ 6V):
The 74LV4066D,118 operates across 1V ~ 6V with 35Ohm on-state resistance and is active with RoHS3 compliance. This part bridges lower voltage requirements while maintaining moderate resistance characteristics.
For Lowest On-State Resistance:
The 74LVC4066D,118 provides the lowest on-state resistance (10Ohm) with the fastest switching performance (3.9ns/5ns) and highest bandwidth (500MHz). Supply range is 1.65V ~ 5.5V. This part is active and RoHS3 compliant, suitable for applications prioritizing low signal loss.
For Automotive Applications:
The CD74HCT4066QM96Q1 and D24066QM96G4Q1 carry AEC-Q100 automotive qualification and last-time-buy status. Both operate at 4.5V ~ 5.5V with 95Ohm on-state resistance and extended temperature range (-40°C ~ 125°C).
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with higher on-state resistance than the PS4066ACSD?
A: Yes, if your circuit design accommodates the increased resistance. Higher resistance increases signal attenuation and power dissipation. Verify that the substitute's on-state resistance does not degrade signal integrity or exceed thermal limits in your application.
Q: What is the impact of supply voltage range differences?
A: The PS4066ACSD operates from 3V to 16V. Substitutes with narrower ranges (such as 4.5V ~ 5.5V) are suitable only for applications within that window. The HEF4066BT,653 (3V ~ 15V) and 74LV4066D,118 (1V ~ 6V) offer broader compatibility for extended voltage applications.
Q: Are all substitute parts RoHS compliant?
A: No. The original PS4066ACSD is RoHS non-compliant. All listed substitutes are ROHS3 compliant, making them suitable for applications requiring RoHS compliance. Verify your design requirements before selecting a substitute.
Q: Does package compatibility guarantee electrical interchangeability?
A: No. All listed parts share the 14-SOIC package, ensuring mechanical and pinout compatibility. However, electrical parameters such as on-state resistance, leakage current, and supply voltage range differ. Electrical verification is required for each application.
Q: Which substitute offers the best performance for high-frequency applications?
A: The 74LVC4066D,118 provides the highest -3dB bandwidth (500MHz) and fastest switching times (3.9ns/5ns). This part is suitable for applications requiring minimal signal distortion at higher frequencies.
Q: Can I use parts with "Last Time Buy" status in new designs?
A: Last-time-buy parts (CD74HCT4066MT, CD74HCT4066QM96Q1, D24066QM96G4Q1) have limited availability and are not recommended for new designs. Use active-status parts (74HC4066D,653, 74HCT4066D,118, 74LV4066D,118, 74LVC4066D,118, CD74HCT4066M96, HEF4066BT,653) for long-term production.
Q: What is the difference between 74HC, 74HCT, 74LV, and 74LVC logic families?
A: These represent different logic families with varying supply voltage ranges and electrical characteristics. 74HC operates 2V ~ 10V, 74HCT operates 4.5V ~ 5.5V, 74LV operates 1V ~ 6V, and 74LVC operates 1.65V ~ 5.5V. Select based on your system's supply voltage and performance requirements.
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