MAX385CSE Equivalent & Substitute Parts

Part Overview

The MAX385CSE is a 2-circuit IC switch with DPST-NO configuration and 35Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated. This component functions as a 2:1 multiplexer/demultiplexer for analog signal switching applications. The MAX385CSE is classified as obsolete, which necessitates identification of active equivalent parts to ensure design continuity and supply chain reliability for new production and maintenance applications.

Key Parameters

Parameter	Value
Switch Circuit Configuration	DPST - NO
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	2
On-State Resistance (Max)	35Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm
Voltage - Supply, Single (V+)	3V ~ 15V
Voltage - Supply, Dual (V±)	±3V ~ 8V
Switch Time (Ton, Toff) (Max)	175ns, 100ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF
Current - Leakage (IS(off)) (Max)	200pA
Crosstalk	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the MAX385CSE is determined by strict equivalence across the following critical parameters:

Switch circuit configuration (DPST - NO)
Multiplexer/demultiplexer circuit topology (2:1)
Number of circuits (2)
On-state resistance maximum rating (35Ohm)
Channel-to-channel matching specification (500mOhm)
Supply voltage ranges (single and dual)
Switching time specifications (Ton, Toff)
Charge injection rating (2pC)
Channel capacitance values (12pF, 12pF)
Leakage current specification (200pA max)
Crosstalk performance (-90dB @ 1MHz)
Operating temperature range (0°C ~ 70°C)
Package form factor (16-SOIC)
Mounting type (Surface Mount)

All substitute parts must match these parameters without deviation to ensure functional and electrical compatibility.

Parameter Comparison

Parameter	MAX385CSE (Main Part)	MAX385CSE+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active
Switch Circuit	DPST - NO	DPST - NO
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	2	2
On-State Resistance (Max)	35Ohm	35Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm	500mOhm
Voltage - Supply, Single (V+)	3V ~ 15V	3V ~ 15V
Voltage - Supply, Dual (V±)	±3V ~ 8V	±3V ~ 8V
Switch Time (Ton, Toff) (Max)	175ns, 100ns	175ns, 100ns
Charge Injection	2pC	2pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF	12pF, 12pF
Current - Leakage (IS(off)) (Max)	200pA	200pA
Crosstalk	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	Not specified	Tube

Engineering Selection Recommendations

The MAX385CSE+ is the direct active equivalent for the obsolete MAX385CSE. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product status and regulatory compliance. The MAX385CSE is obsolete and non-compliant with RoHS3 standards, while the MAX385CSE+ is an active product with ROHS3 compliance. For new designs and production applications, the MAX385CSE+ is the appropriate selection. The MAX385CSE+ is supplied in tube packaging, which is standard for active production inventory.

Both parts maintain identical performance characteristics for analog switching applications, including on-state resistance, switching time, charge injection, and crosstalk specifications. Pin configuration and package footprint are identical, enabling direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can MAX385CSE+ be used as a direct replacement for MAX385CSE in existing designs?

A: Yes. The MAX385CSE+ is electrically and mechanically identical to the MAX385CSE. Both parts feature the same 16-SOIC package, identical pin configuration, and matching electrical specifications. Direct substitution is possible without circuit modification.

Q: What is the primary reason to transition from MAX385CSE to MAX385CSE+?

A: The MAX385CSE is classified as obsolete, creating supply chain risk. The MAX385CSE+ is an active product with current manufacturing support and ROHS3 compliance, ensuring long-term availability and regulatory alignment for new production.

Q: Are there any performance differences between MAX385CSE and MAX385CSE+?

A: No. Both parts deliver identical electrical performance. On-state resistance, switching time, charge injection, leakage current, crosstalk, and all other electrical parameters are equivalent.

Q: What packaging formats are available for these parts?

A: The MAX385CSE+ is supplied in tube packaging. The original MAX385CSE packaging format is not specified in the available data.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both MAX385CSE and MAX385CSE+ operate across the 0°C to 70°C temperature range, making them suitable for identical thermal environments.

Q: Does the RoHS3 compliance of MAX385CSE+ affect electrical performance?

A: No. RoHS3 compliance is a regulatory and material composition specification that does not alter electrical performance or functional characteristics. The MAX385CSE+ maintains all electrical specifications of the original MAX385CSE.

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