PS392CSE Equivalent & Substitute Parts

Part Overview

The PS392CSE is a 4-circuit SPST-NO IC switch manufactured by Diodes Incorporated, featuring 45Ohm on-state resistance in a 16-SOIC package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The PS392CSE operates across supply voltage ranges of 3V to 15V (single supply) or ±3V to ±8V (dual supply), with switching times of 130ns (Ton) and 75ns (Toff), and supports 100MHz bandwidth operation.

Key Parameters

Parameter	PS392CSE
Manufacturer	Diodes Incorporated
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 ~ 15V
Voltage - Supply, Dual (V±)	±3V ~ 8V
Switch Time Ton (Max)	130ns
Switch Time Toff (Max)	75ns
-3dB Bandwidth	100MHz
Charge Injection	3pC
Channel Capacitance CS(off)	12pF
Channel Capacitance CD(off)	12pF
Current - Leakage IS(off) (Max)	100pA
Crosstalk	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the PS392CSE is determined by the following critical parameters:

Functional Requirements:

Switch circuit type: SPST - NO (Single Pole Single Throw - Normally Open)
Number of circuits: 4
Multiplexer/Demultiplexer configuration: 1:1
Package type: 16-SOIC surface mount

Electrical Compatibility Criteria:

On-state resistance (Ron): Must accommodate circuit impedance requirements
Supply voltage range: Must support the application's voltage rails
Switch timing (Ton, Toff): Must meet signal switching speed requirements
Leakage current (IS(off)): Must satisfy low-power or precision circuit requirements
Crosstalk performance: Must maintain signal isolation specifications

Environmental & Compliance Criteria:

Operating temperature range: Must cover the application's thermal environment
RoHS compliance status: Required for regulated markets
Moisture sensitivity level: Must match PCB assembly process capabilities

Substitute parts are grouped by on-state resistance characteristics, as this parameter directly affects circuit performance and signal integrity. Parts with lower Ron values provide improved signal fidelity but may have different voltage or temperature specifications. Parts with higher Ron values offer extended voltage ranges or temperature ratings at the cost of increased insertion loss.

Parameter Comparison

Parameter	PS392CSE	MAX392CSE+	MAX392ESE+	MAX4712ESE+	DG455EY-T1-E3	ALD4202MSCL	MAX4512ESE+
Manufacturer	Diodes Inc.	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Vishay Siliconix	Advanced Linear Devices	Analog Devices/Maxim
Switch Circuit	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	4	4	4	4	4	4	4
On-State Resistance (Max)	45Ohm	35Ohm	35Ohm	25Ohm	5.3Ohm	135Ohm	160Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm	300mOhm	300mOhm	200mOhm	120mOhm	2.7Ohm	-
Voltage - Supply, Single (V+)	3V ~ 15V	3V ~ 15V	3V ~ 15V	2.7V ~ 11V	12V ~ 36V	3V ~ 12V	9V ~ 36V
Voltage - Supply, Dual (V±)	±3V ~ 8V	±3V ~ 8V	±3V ~ 8V	±2.7V ~ 5.5V	±5V ~ 15V	±1.5V ~ 6V	±4.5V ~ 18V
Switch Time Ton (Max)	130ns	130ns	130ns	125ns	118ns	240ns	500ns
Switch Time Toff (Max)	75ns	75ns	75ns	80ns	97ns	130ns	400ns
Charge Injection	3pC	2pC	2pC	25pC	22pC	1pC	1.5pC
Channel Capacitance CS(off)	12pF	9pF	9pF	8pF	31pF	3pF	10pF
Channel Capacitance CD(off)	12pF	9pF	9pF	8pF	34pF	3pF	5pF
Current - Leakage IS(off) (Max)	100pA	100pA	100pA	500pA	500pA	100pA	500pA
Crosstalk	-90dB @ 1MHz	-85dB @ 1MHz	-85dB @ 1MHz	-87dB @ 1MHz	-85dB @ 1MHz	-90dB @ 100kHz	-66dB @ 1MHz
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 85°C
Package / Case	16-SOIC (0.295", 7.50mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Closest Electrical Match):

MAX392CSE+ and MAX392ESE+ are the closest functional equivalents to the PS392CSE. Both maintain identical on-state resistance (35Ohm), supply voltage ranges (3V ~ 15V single, ±3V ~ 8V dual), and switching times (130ns Ton, 75ns Toff). MAX392ESE+ extends the operating temperature range to -40°C ~ 85°C, providing broader thermal coverage. Both are ROHS3 compliant and active products, eliminating obsolescence risk.

Low-Resistance Alternative:

MAX4712ESE+ offers 25Ohm on-state resistance with improved channel matching (200mOhm) and lower charge injection (25pC). This part operates across 2.7V ~ 11V (single supply) and -40°C ~ 85°C, suitable for low-voltage applications requiring faster signal transitions. ROHS3 compliance is confirmed.

Ultra-Low-Resistance Option:

DG455EY-T1-E3 from Vishay Siliconix provides the lowest on-state resistance at 5.3Ohm with superior channel matching (120mOhm). This part requires higher supply voltages (12V ~ 36V single, ±5V ~ 15V dual) and operates across -40°C ~ 125°C. Appropriate for high-frequency, low-impedance switching applications. ROHS3 compliant.

High-Resistance Alternatives:

ALD4202MSCL (135Ohm) and MAX4512ESE+ (160Ohm) are suitable for applications where higher on-state resistance is acceptable. These parts support extended voltage ranges and lower leakage currents. MAX4512ESE+ operates across -40°C ~ 85°C with dual supply support up to ±18V. Both are ROHS3 compliant.

Compliance Consideration:

All substitute parts listed are ROHS3 compliant, addressing the non-compliance status of the obsolete PS392CSE. This compliance upgrade is mandatory for new designs targeting regulated markets.

Frequently Asked Questions (FAQ)

Q: Can MAX392CSE+ directly replace PS392CSE in existing designs?

A: MAX392CSE+ is functionally compatible with PS392CSE for most applications. Both parts share identical on-state resistance (35Ohm vs. 45Ohm PS392CSE), supply voltage ranges, and switching times. However, the package width differs: MAX392CSE+ uses 16-SOIC (0.154", 3.90mm) versus PS392CSE (0.295", 7.50mm). PCB layout modifications are required. MAX392CSE+ is ROHS3 compliant, addressing the obsolescence issue.

Q: What is the impact of on-state resistance differences on circuit performance?

A: On-state resistance directly affects signal insertion loss and power dissipation. Lower Ron values (DG455EY-T1-E3 at 5.3Ohm) reduce signal attenuation and heat generation, improving bandwidth and efficiency. Higher Ron values (MAX4512ESE+ at 160Ohm) increase insertion loss but may be acceptable in high-impedance circuits. Selection depends on the application's impedance requirements and thermal constraints.

Q: Are all substitute parts pin-compatible with PS392CSE?

A: All listed substitutes maintain 16-SOIC package type and identical pin count (16 pins). However, physical package dimensions vary. PS392CSE uses a wider body (0.295", 7.50mm) compared to modern 16-SOIC packages (0.154", 3.90mm). PCB footprint redesign is necessary for mechanical fit, though electrical pinout remains compatible.

Q: Which substitute part supports the widest temperature range?

A: DG455EY-T1-E3 operates across -40°C ~ 125°C, the broadest range among all listed substitutes. This part is suitable for industrial and automotive applications requiring extended thermal coverage. Standard substitutes like MAX392ESE+ and MAX4712ESE+ support -40°C ~ 85°C.

Q: What is the significance of channel-to-channel matching (ΔRon)?

A: Channel-to-channel matching specifies resistance variation between the four circuits within a single package. Lower ΔRon values (DG455EY-T1-E3 at 120mOhm) ensure uniform switching behavior across all channels, critical for precision multiplexing and signal routing applications. PS392CSE specifies 500mOhm matching, while MAX392 variants offer 300mOhm.

Q: Are there packaging format options for substitute parts?

A: Yes. MAX392CSE+ and MAX392ESE+ are available in both Tube and Tape & Reel (TR) packaging. MAX392CSE+T and MAX392ESE+T designate Tape & Reel formats for automated assembly. MAX4512ESE+T and other TR variants support high-volume production. Packaging selection depends on assembly process requirements.

Q: How does crosstalk performance affect signal integrity?

A: Crosstalk measures unwanted signal coupling between channels. PS392CSE specifies -90dB @ 1MHz. Substitute parts range from -66dB (MAX4512ESE+) to -90dB (ALD4202MSCL). Lower crosstalk values (more negative dB) indicate better channel isolation. Applications requiring high signal fidelity should prioritize parts with crosstalk ≤ -85dB @ 1MHz.

Q: What is the importance of RoHS compliance for new designs?

A: ROHS3 compliance is mandatory for products sold in the European Union and many regulated markets. PS392CSE is RoHS non-compliant, making it unsuitable for new designs. All listed substitutes are ROHS3 compliant, ensuring regulatory approval and long-term market availability.

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