MAX397EPI Equivalent & Substitute Parts

Part Overview

The MAX397EPI is a dual 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated. This interface component features two independent 8:1 switch circuits with 100Ohm on-state resistance, designed for signal routing and switching applications in analog systems. The device is currently classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Multiplexer/Demultiplexer Circuit Configuration	8:1
Number of Circuits	2
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	1.8Ohm
Voltage - Supply, Single (V+)	2.7V ~ 16V
Voltage - Supply, Dual (V±)	±2.7V ~ 8V
Switch Time (Ton, Toff) (Max)	150ns, 150ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	11pF, 80pF
Current - Leakage (IS(off)) (Max)	100pA
Crosstalk	-92dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	28-DIP (0.600", 15.24mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the MAX397EPI is determined by strict equivalence across the following critical parameters:

Multiplexer circuit configuration: 8:1 topology with 2 independent circuits
On-state resistance: 100Ohm maximum
Channel-to-channel matching: 1.8Ohm maximum
Supply voltage ranges: Single supply 2.7V ~ 16V and dual supply ±2.7V ~ 8V
Switch timing: 150ns maximum for both Ton and Toff
Charge injection: 2pC
Channel capacitance specifications: 11pF and 80pF
Leakage current: 100pA maximum
Crosstalk performance: -92dB @ 100kHz
Operating temperature range: -40°C ~ 85°C
Package format: 28-DIP through-hole mounting

Only components matching all these parameters across electrical and mechanical specifications are classified as direct substitutes.

Parameter Comparison

Parameter	MAX397EPI (Main Part)	MAX397EPI+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Category	Interface	Interface
Multiplexer/Demultiplexer Circuit	8:1	8:1
Number of Circuits	2	2
On-State Resistance (Max)	100Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	1.8Ohm	1.8Ohm
Voltage - Supply, Single (V+)	2.7V ~ 16V	2.7V ~ 16V
Voltage - Supply, Dual (V±)	±2.7V ~ 8V	±2.7V ~ 8V
Switch Time (Ton, Toff) (Max)	150ns, 150ns	150ns, 150ns
Charge Injection	2pC	2pC
Channel Capacitance (CS(off), CD(off))	11pF, 80pF	11pF, 80pF
Current - Leakage (IS(off)) (Max)	100pA	100pA
Crosstalk	-92dB @ 100kHz	-92dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	28-DIP (0.600", 15.24mm)	28-DIP (0.600", 15.24mm)
Mounting Type	Through Hole	Through Hole
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging Type	Standard	Tube

Engineering Selection Recommendations

The MAX397EPI+ serves as the direct functional equivalent to the MAX397EPI. Both components are electrically and mechanically identical across all specified parameters. The primary distinction lies in product lifecycle status and regulatory compliance:

The MAX397EPI is classified as obsolete, limiting long-term availability and procurement reliability. The MAX397EPI+ maintains active product status with current manufacturing support and availability assurance.

From a compliance perspective, the MAX397EPI+ achieves ROHS3 compliance, whereas the original MAX397EPI is RoHS non-compliant. For applications subject to RoHS directives or environmental regulations, the MAX397EPI+ is the appropriate selection.

Both components share identical electrical performance specifications, package geometry, and mounting requirements, enabling direct substitution without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can MAX397EPI+ replace MAX397EPI in existing designs?

A: Yes. The MAX397EPI+ is electrically and mechanically identical to the MAX397EPI. All electrical parameters, including on-state resistance, switching speed, supply voltage ranges, and operating temperature specifications, are equivalent. The 28-DIP package dimensions and through-hole mounting configuration are identical, allowing direct substitution without PCB modification.

Q: What is the primary reason to transition from MAX397EPI to MAX397EPI+?

A: The MAX397EPI is classified as obsolete, which creates procurement challenges and limits long-term availability. The MAX397EPI+ maintains active product status with current manufacturing support. Additionally, the MAX397EPI+ achieves ROHS3 compliance, whereas the original part is RoHS non-compliant, making it necessary for applications subject to environmental regulations.

Q: Are there any differences in packaging between these two parts?

A: Both components use the same 28-DIP (0.600", 15.24mm) package with through-hole mounting. The primary packaging difference is that MAX397EPI+ is supplied in tube packaging, whereas MAX397EPI uses standard packaging. This does not affect electrical performance or board-level compatibility.

Q: What are the critical parameters that define substitution eligibility for this multiplexer IC?

A: Substitution eligibility is determined by equivalence in circuit configuration (8:1 dual multiplexer), on-state resistance (100Ohm), channel matching (1.8Ohm), supply voltage ranges (2.7V ~ 16V single, ±2.7V ~ 8V dual), switching speed (150ns), charge injection (2pC), channel capacitance (11pF, 80pF), leakage current (100pA), crosstalk performance (-92dB @ 100kHz), operating temperature range (-40°C ~ 85°C), and package format (28-DIP through-hole).

Q: Is the MAX397EPI+ suitable for new designs?

A: Yes. The MAX397EPI+ is the recommended selection for new designs. It provides identical electrical functionality to the MAX397EPI while offering active product status, improved regulatory compliance (ROHS3), and assured long-term availability from Analog Devices Inc./Maxim Integrated.

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