MAX382CWN Equivalent & Substitute Parts

Part Overview

The MAX382CWN is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated. This single-circuit switch device features 100Ohm on-state resistance and is housed in an 18-SOIC surface mount package. The MAX382CWN is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical performance and package specifications to ensure direct compatibility in existing circuit implementations.

Key Parameters

Parameter	Specification
Multiplexer/Demultiplexer Circuit Configuration	8:1
Number of Circuits	1
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	4Ohm (Max)
Voltage - Supply, Single (V+)	2.7V ~ 16.5V
Voltage - Supply, Dual (V±)	±3V ~ 8V
Switch Time (Ton, Toff) (Max)	150ns, 150ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	11pF, 40pF
Current - Leakage (IS(off)) (Max)	200pA
Crosstalk	-92dB @ 100kHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	18-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the MAX382CWN is determined by strict equivalence across all electrical and mechanical parameters. The primary substitute, MAX382CWN+, maintains identical specifications for multiplexer configuration (8:1), circuit count (1), on-state resistance (100Ohm), supply voltage ranges (2.7V ~ 16.5V single, ±3V ~ 8V dual), switching characteristics (150ns), charge injection (2pC), channel capacitance values (11pF, 40pF), leakage current (200pA), crosstalk performance (-92dB @ 100kHz), and operating temperature range (0°C ~ 70°C). Both parts utilize identical 18-SOIC surface mount packaging.

The key differentiators between the main part and its substitute are product status and regulatory compliance. The MAX382CWN is obsolete, while MAX382CWN+ is active production. Additionally, MAX382CWN+ achieves ROHS3 compliance, whereas the original MAX382CWN is RoHS non-compliant. Both parts maintain REACH Unaffected status and EAR99 export classification.

Parameter Comparison

Parameter	MAX382CWN	MAX382CWN+
Multiplexer/Demultiplexer Circuit	8:1	8:1
Number of Circuits	1	1
On-State Resistance (Max)	100Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	4Ohm (Max)	4Ohm (Max)
Voltage - Supply, Single (V+)	2.7V ~ 16.5V	2.7V ~ 16.5V
Voltage - Supply, Dual (V±)	±3V ~ 8V	±3V ~ 8V
Switch Time (Ton, Toff) (Max)	150ns, 150ns	150ns, 150ns
Charge Injection	2pC	2pC
Channel Capacitance (CS(off), CD(off))	11pF, 40pF	11pF, 40pF
Current - Leakage (IS(off)) (Max)	200pA	200pA
Crosstalk	-92dB @ 100kHz	-92dB @ 100kHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Package / Case	18-SOIC (0.295", 7.50mm Width)	18-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	Not specified	Tube

Engineering Selection Recommendations

The MAX382CWN+ is the direct substitute for MAX382CWN applications. Selection of MAX382CWN+ is appropriate for all new designs and production transitions due to its active product status and ROHS3 compliance certification. The electrical and mechanical equivalence ensures pin-for-pin compatibility and identical circuit performance without design modifications.

For legacy systems currently utilizing MAX382CWN, transition to MAX382CWN+ maintains full functional compatibility while addressing component obsolescence and regulatory compliance requirements. The identical 18-SOIC package footprint and electrical specifications eliminate the need for PCB redesign or circuit re-qualification.

Frequently Asked Questions (FAQ)

Q: Can MAX382CWN+ be used as a direct replacement for MAX382CWN in existing designs?

A: Yes. MAX382CWN+ provides complete electrical and mechanical equivalence. All parameters including multiplexer configuration, on-state resistance, supply voltage ranges, switching characteristics, and package specifications are identical. No circuit modifications are required.

Q: What is the primary reason to transition from MAX382CWN to MAX382CWN+?

A: MAX382CWN is classified as obsolete, making long-term component availability uncertain. MAX382CWN+ is in active production status, ensuring reliable supply for current and future manufacturing requirements. Additionally, MAX382CWN+ achieves ROHS3 compliance, meeting modern regulatory standards.

Q: Are there any differences in package specifications between these parts?

A: Both parts utilize identical 18-SOIC surface mount packaging with 0.295" (7.50mm) width. The primary packaging difference is that MAX382CWN+ is supplied in tube format, while MAX382CWN packaging is not specified. This does not affect electrical performance or PCB assembly compatibility.

Q: Do both parts support the same supply voltage ranges?

A: Yes. Both MAX382CWN and MAX382CWN+ support single supply operation from 2.7V to 16.5V and dual supply operation from ±3V to ±8V. Circuit designs utilizing either voltage configuration are fully compatible with both parts.

Q: What are the switching performance characteristics?

A: Both parts feature identical switching times of 150ns maximum for both turn-on (Ton) and turn-off (Toff) transitions. Charge injection is 2pC, and crosstalk performance is -92dB at 100kHz. These specifications ensure equivalent signal integrity in multiplexing applications.

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