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PS383EPE Equivalent & Substitute Parts
Part Overview
The PS383EPE is a 2-circuit SPDT (Single Pole Double Throw) analog switch manufactured by Diodes Incorporated, designed for signal routing and multiplexing applications in the 3V to 15V single supply or ±3V to ±8V dual supply range. This component features 30Ohm on-state resistance and is packaged in a 16-pin DIP format for through-hole mounting.
The PS383EPE is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance of systems utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPDT |
| Multiplexer/Demultiplexer Configuration | 2:1 |
| Number of Circuits | 2 |
| On-State Resistance (Max) | 30Ohm |
| Channel-to-Channel Matching (ΔRon) | 200mOhm |
| Voltage - Supply, Single (V+) | 3V ~ 15V |
| Voltage - Supply, Dual (V±) | ±3V ~ 8V |
| Switch Time (Ton, Toff) (Max) | 130ns, 75ns |
| Charge Injection | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 12pF, 12pF |
| Current - Leakage (IS(off)) (Max) | 100pA |
| Crosstalk | -90dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
Substitute Part Grouping Explanation
Substitution eligibility for the PS383EPE is determined by the following critical parameters:
- Functional Architecture: Switch circuit type (SPDT) and multiplexer configuration (2:1) must be identical
- Circuit Count: Number of circuits must equal 2
- Electrical Performance: On-state resistance, supply voltage ranges, and switching characteristics must be compatible with the original design
- Physical Form Factor: Package type (16-DIP) and mounting method (through hole) must match for direct board-level replacement
- Signal Integrity: Charge injection, capacitance, leakage current, and crosstalk specifications must not degrade system performance
The MAX383CPE+ meets these substitution criteria. It maintains the same SPDT 2:1 architecture, dual-circuit configuration, and 16-DIP through-hole package. While on-state resistance is slightly higher (35Ohm vs. 30Ohm) and switching times are marginally longer, these variations remain within acceptable tolerance for most applications utilizing the PS383EPE.
Parameter Comparison
| Parameter | PS383EPE | MAX383CPE+ | Compatibility Notes |
|---|---|---|---|
| Switch Circuit Type | SPDT | SPDT | Identical |
| Multiplexer/Demultiplexer Configuration | 2:1 | 2:1 | Identical |
| Number of Circuits | 2 | 2 | Identical |
| On-State Resistance (Max) | 30Ohm | 35Ohm | 5Ohm increase; acceptable for most signal routing applications |
| Channel-to-Channel Matching (ΔRon) | 200mOhm | 500mOhm | 300mOhm increase; verify for precision applications |
| Voltage - Supply, Single (V+) | 3V ~ 15V | 3V ~ 15V | Identical |
| Voltage - Supply, Dual (V±) | ±3V ~ 8V | ±3V ~ 8V | Identical |
| Switch Time (Ton, Toff) (Max) | 130ns, 75ns | 175ns, 100ns | Longer switching times; acceptable for non-critical timing applications |
| Charge Injection | 2pC | 2pC | Identical |
| Channel Capacitance (CS(off), CD(off)) | 12pF, 12pF | 12pF, 12pF | Identical |
| Current - Leakage (IS(off)) (Max) | 100pA | 200pA | 100pA increase; acceptable for most applications |
| Crosstalk | -90dB @ 1MHz | -90dB @ 1MHz | Identical |
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°C | MAX383CPE+ has narrower range; verify application temperature requirements |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | Identical; direct board replacement |
| Mounting Type | Through Hole | Through Hole | Identical |
Engineering Selection Recommendations
Product Status Consideration: The PS383EPE is obsolete, making the MAX383CPE+ the primary active alternative. The MAX383CPE+ is classified as active and carries ROHS3 compliance, whereas the PS383EPE is RoHS non-compliant. For new designs or systems requiring regulatory compliance, the MAX383CPE+ is the appropriate selection.
Compliance and Certification: Both parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99). The MAX383CPE+ provides superior compliance posture through ROHS3 certification, which may be mandatory for certain applications or markets.
Operating Temperature Range: The MAX383CPE+ operates over 0°C to 70°C, compared to the PS383EPE's -40°C to 85°C range. Applications requiring operation below 0°C or above 70°C cannot use the MAX383CPE+ as a direct substitute without design modification or thermal management review.
Electrical Performance Variance: The MAX383CPE+ exhibits acceptable deviations in on-state resistance (35Ohm vs. 30Ohm), channel matching (500mOhm vs. 200mOhm), and leakage current (200pA vs. 100pA). These differences are within typical design margins for analog switching applications but should be evaluated for precision signal routing or low-noise requirements.
Frequently Asked Questions (FAQ)
Q: Can the MAX383CPE+ directly replace the PS383EPE on existing PCBs?
A: Yes, the MAX383CPE+ is a direct physical replacement. Both components use the 16-DIP through-hole package with identical pin assignments. However, verify that your application's operating temperature range does not exceed 0°C to 70°C, as the MAX383CPE+ has a narrower temperature specification than the PS383EPE.
Q: What is the significance of the 5Ohm increase in on-state resistance?
A: The MAX383CPE+ has a maximum on-state resistance of 35Ohm compared to the PS383EPE's 30Ohm. For most signal routing and multiplexing applications, this 5Ohm difference is negligible. However, applications involving low-impedance signal paths or precision analog circuits should evaluate the impact on signal attenuation and impedance matching.
Q: Does the MAX383CPE+ meet RoHS requirements?
A: Yes, the MAX383CPE+ is ROHS3 compliant, whereas the PS383EPE is RoHS non-compliant. If your application or market requires RoHS compliance, the MAX383CPE+ is the appropriate choice.
Q: Are there differences in switching speed between these parts?
A: Yes. The MAX383CPE+ has longer maximum switching times: 175ns turn-on (vs. 130ns) and 100ns turn-off (vs. 75ns). For applications with strict timing requirements or high-frequency switching, these differences should be evaluated against your system specifications.
Q: What is the channel-to-channel matching difference, and does it matter?
A: The PS383EPE specifies 200mOhm maximum matching, while the MAX383CPE+ specifies 500mOhm. This 300mOhm difference is relevant for applications requiring matched channel impedance, such as precision audio or instrumentation circuits. Standard signal routing applications are typically unaffected.
Q: Can I use the MAX383CPE+ in applications requiring -40°C operation?
A: No. The MAX383CPE+ is rated for 0°C to 70°C operation only. If your application requires operation below 0°C, the PS383EPE's -40°C to 85°C range cannot be matched by the MAX383CPE+. Alternative substitutes or design modifications would be necessary.
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