MAX305CPE Equivalent & Substitute Parts

Part Overview

The MAX305CPE is a 2-circuit IC switch with DPST-NO configuration and 35Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design requirements and production continuity. The part operates across supply voltage ranges of 10V to 30V (single supply) or ±4.5V to ±20V (dual supply), with switching times of 150ns (Ton) and 100ns (Toff).

Substiute Parts

MAX305CPE

Analog Devices Inc./Maxim IntegratedIn Stock: 2518MAX305CPE Datasheet

Current PartRFQ

MAX305CPE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1207MAX305CPE+ Datasheet

DirectRFQ

DG405DJ-E3

Vishay SiliconixIn Stock: 1172DG405DJ-E3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX305CPE is determined by the following critical parameters:

• Switch Circuit Configuration: Must be DPST - NO
• Multiplexer/Demultiplexer Circuit: Must be 2:1
• Number of Circuits: Must be 2
• Package / Case: Must be 16-DIP (0.300", 7.62mm)
• Mounting Type: Must be Through Hole
• On-State Resistance (Max): Maximum allowable 45Ohm (within acceptable tolerance for signal switching applications)
• Switch Time (Ton, Toff): Must not exceed 150ns (Ton) and 100ns (Toff)
• Channel Capacitance: Must be 12pF for both CS(off) and CD(off)
• Current - Leakage (IS(off)): Must not exceed 500pA
• Crosstalk: Must be -90dB @ 1MHz or better

Two substitute parts meet these criteria:

1. MAX305CPE+: Direct equivalent with identical electrical specifications and active product status
2. DG405DJ-E3: Functional equivalent manufactured by Vishay Siliconix with minor parameter variations within acceptable ranges

Parameter Comparison

Engineering Selection Recommendations

MAX305CPE+ is the primary substitute for obsolete MAX305CPE applications. This part maintains identical electrical specifications and package configuration while offering active product status and ROHS3 compliance. Selection of MAX305CPE+ eliminates design modifications and ensures direct functional compatibility.

DG405DJ-E3 serves as a functional alternative when MAX305CPE+ availability is constrained. This Vishay Siliconix part accommodates the same 2:1 DPST-NO switching architecture and 16-DIP package. Design considerations include:

• On-state resistance increases from 35Ohm to 45Ohm, acceptable for applications where signal attenuation within this tolerance range is permissible
• Charge injection increases from 10pC to 60pC, requiring evaluation in precision analog switching circuits
• Operating temperature range expands to -40°C ~ 85°C, providing extended thermal capability
• Supply voltage ranges shift slightly (13V ~ 36V single supply; ±7V ~ ±22V dual supply), compatible with most standard supply configurations

Both substitute parts carry ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Can MAX305CPE+ be used as a direct replacement for MAX305CPE?

A: Yes. MAX305CPE+ maintains identical electrical specifications, package configuration, and functional performance. The primary difference is product status (active vs. obsolete) and RoHS compliance certification.

Q: What are the key differences between MAX305CPE+ and DG405DJ-E3?

A: Both parts share identical switch circuit configuration (DPST-NO 2:1), package type (16-DIP), and switching times. DG405DJ-E3 differs in on-state resistance (45Ohm vs. 35Ohm), charge injection (60pC vs. 10pC), and operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). These differences require circuit-level evaluation for specific applications.

Q: Is DG405DJ-E3 suitable for all MAX305CPE applications?

A: DG405DJ-E3 is functionally compatible for applications where the increased on-state resistance (45Ohm) and charge injection (60pC) fall within acceptable design tolerances. Applications requiring the original 35Ohm resistance or 10pC charge injection specifications should prioritize MAX305CPE+.

Q: Are both substitute parts available in the same packaging options?

A: Both MAX305CPE+ and DG405DJ-E3 are supplied in 16-DIP (0.300", 7.62mm) through-hole packages. Packaging format compatibility ensures direct PCB compatibility without layout modifications.

Q: What compliance certifications apply to the substitute parts?

A: Both MAX305CPE+ and DG405DJ-E3 are ROHS3 compliant and REACH unaffected. These certifications support regulatory compliance for new product designs and manufacturing in restricted substance environments.

Q: How do supply voltage ranges compare across the three parts?

A: MAX305CPE and MAX305CPE+ operate at 10V ~ 30V (single supply) or ±4.5V ~ ±20V (dual supply). DG405DJ-E3 operates at 13V ~ 36V (single supply) or ±7V ~ ±22V (dual supply). DG405DJ-E3 accommodates higher single-supply voltages and requires minimum ±7V dual-supply operation.