PS323CSAE Equivalent & Substitute Parts

Part Overview

The PS323CSAE is a 2-circuit SPST-NO IC switch manufactured by Diodes Incorporated, designed for signal routing and switching applications in 8-SOIC surface mount packaging. This part operates across a 2.5V to 16V supply range with 35Ohm on-state resistance and features low charge injection (1pC) and excellent crosstalk isolation (-85dB @ 1MHz). The PS323CSAE is currently obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

PS323CSAE

Diodes IncorporatedIn Stock: 1225PS323CSAE Datasheet

Current PartRFQ

MAX323CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2107MAX323CSA+ Datasheet

MFR RecommendedRFQ

MAX323CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5878MAX323CSA+T Datasheet

MFR RecommendedRFQ

MAX323ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1928MAX323ESA+ Datasheet

MFR RecommendedRFQ

MAX323ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2417MAX323ESA+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS323CSAE are selected based on functional equivalence within the allowed electrical and mechanical parameters. The primary substitution criteria are:

Functional Compatibility:

• Identical switch circuit type (SPST - NO)
• Identical number of circuits (2)
• Identical multiplexer configuration (1:1)
• Identical package type (8-SOIC)
• Identical pin count and physical dimensions

Electrical Compatibility:

• Supply voltage range must encompass or overlap the original specification (2.5V ~ 16V minimum)
• On-state resistance tolerance must be acceptable for the application
• Channel-to-channel matching, charge injection, and crosstalk specifications must meet or exceed original performance
• Leakage current and capacitance parameters must remain within acceptable limits

Environmental & Compliance:

• RoHS3 compliance maintained
• MSL rating of 1 (Unlimited) maintained
• Operating temperature range may extend beyond the original specification

The MAX323 series from Analog Devices Inc./Maxim Integrated meets all functional and electrical compatibility requirements. All substitute parts maintain the same 8-SOIC package, circuit topology, and core electrical characteristics while offering active product status and extended availability.

Parameter Comparison

Engineering Selection Recommendations

All MAX323 variants (MAX323CSA+, MAX323CSA+T, MAX323ESA+, MAX323ESA+T) are functionally equivalent substitutes for the PS323CSAE. Selection among these alternatives is determined by application requirements and supply chain considerations:

MAX323CSA+ and MAX323CSA+T are suitable for applications operating within the 0°C to 70°C temperature range. These parts maintain the same operating temperature specification as the original PS323CSAE. MAX323CSA+ is supplied in tube packaging, while MAX323CSA+T is supplied in tape and reel format for automated assembly processes.

MAX323ESA+ and MAX323ESA+T extend the operating temperature range to -40°C to 85°C, providing enhanced thermal performance for applications requiring extended temperature operation. MAX323ESA+ is supplied in tube packaging, while MAX323ESA+T is supplied in tape and reel format.

All substitute parts maintain ROHS3 compliance, MSL rating of 1 (Unlimited), and active product status with established supply availability. The primary electrical difference is on-state resistance (60Ohm versus 35Ohm) and switch timing parameters, which must be evaluated against specific circuit requirements. Supply voltage range compatibility is maintained across all substitutes with a minimum specification of 2.7V, which overlaps the original 2.5V to 16V range.

Frequently Asked Questions (FAQ)

Q: Can MAX323 parts directly replace PS323CSAE in existing designs?

A: MAX323 parts are functionally equivalent in circuit topology, package, and pin configuration. However, the on-state resistance differs (60Ohm versus 35Ohm), and switch timing is slower (150ns/100ns versus 75ns/50ns). Circuit designs must accommodate these electrical differences. The minimum supply voltage is 2.7V instead of 2.5V, which may affect low-voltage applications.

Q: What is the difference between MAX323CSA+ and MAX323ESA+ variants?

A: Both parts are electrically identical with the same on-state resistance (60Ohm) and switching characteristics. The primary difference is operating temperature range: MAX323CSA+ operates from 0°C to 70°C, while MAX323ESA+ operates from -40°C to 85°C. Select MAX323ESA+ for applications requiring extended temperature performance.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging (MAX323CSA+, MAX323ESA+) is suitable for manual assembly and lower-volume production. Tape & reel packaging (MAX323CSA+T, MAX323ESA+T) is designed for automated pick-and-place assembly processes and higher-volume manufacturing. Both formats contain identical components; packaging selection depends on assembly methodology and production volume.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All MAX323 variants and the original PS323CSAE are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and regulatory requirements for current manufacturing standards.

Q: What supply voltage range applies to MAX323 substitutes?

A: MAX323 parts operate across 2.7V to 16V. The original PS323CSAE operates across 2.5V to 16V. Applications requiring operation below 2.7V cannot use MAX323 substitutes without circuit modification.

Q: How do crosstalk and leakage current specifications compare?

A: All substitute parts maintain identical crosstalk (-85dB @ 1MHz) and leakage current (100pA maximum) specifications as the original PS323CSAE, ensuring equivalent signal isolation and off-state performance.