MAX307CWI Equivalent & Substitute Parts

Part Overview

The MAX307CWI is a dual 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-SOIC surface mount package. This component features 100Ohm on-state resistance and operates across single supply (5V ~ 30V) or dual supply (±4.5V ~ 20V) configurations. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Multiplexer/Demultiplexer Circuit	8:1
Number of Circuits	2
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	1.5Ohm
Voltage - Supply, Single (V+)	5V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	200ns, 150ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	8pF, 65pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-92dB @ 100kHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	28-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the MAX307CWI is determined by the following critical parameters:

Circuit Configuration: Dual 8:1 multiplexer/demultiplexer topology (2 circuits)
On-State Resistance: 100Ohm maximum specification
Package Compatibility: 28-SOIC surface mount form factor
Supply Voltage Range: Compatibility with single supply (5V ~ 30V) or dual supply (±4.5V ~ 20V) operation
Switching Performance: Maximum switch times of 200ns (Ton) and 150ns (Toff)

Substitute parts must maintain these core electrical and mechanical specifications to ensure functional equivalence in existing circuit designs.

Parameter Comparison

Parameter	MAX307CWI	MAX307CWI+	DG407DYZ	DG407DYZ-T
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Renesas Electronics Corporation	Renesas Electronics Corporation
Product Status	Obsolete	Active	Active	Active
Multiplexer/Demultiplexer Circuit	8:1	8:1	8:1	8:1
Number of Circuits	2	2	2	2
On-State Resistance (Max)	100Ohm	100Ohm	100Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	1.5Ohm	1.5Ohm	5Ohm	5Ohm
Voltage - Supply, Single (V+)	5V ~ 30V	5V ~ 30V	5V ~ 34V	5V ~ 34V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±5V ~ 20V	±5V ~ 20V
Switch Time (Ton, Toff) (Max)	200ns, 150ns	200ns, 150ns	200ns, 150ns	200ns, 150ns
Charge Injection	2pC	2pC	40pC	40pC
Channel Capacitance (CS(off), CD(off))	8pF, 65pF	8pF, 65pF	8pF, 80pF	8pF, 80pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA	500pA
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	28-SOIC (0.295", 7.50mm Width)	28-SOIC (0.295", 7.50mm Width)	28-SOIC (0.295", 7.50mm Width)	28-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)
Packaging Type	Not specified	Tube	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

MAX307CWI+ (Analog Devices Inc./Maxim Integrated)

This part is the direct successor to the MAX307CWI, maintaining identical electrical specifications including 1.5Ohm channel-to-channel matching and 2pC charge injection. The MAX307CWI+ is active in production and ROHS3 compliant, addressing regulatory requirements for new designs. Inventory availability is 2300 units. This substitute is recommended for applications requiring minimal parameter deviation from the original MAX307CWI specification.

DG407DYZ and DG407DYZ-T (Renesas Electronics Corporation)

Both DG407DYZ variants from Renesas maintain the core 8:1 dual multiplexer topology, 100Ohm on-state resistance, and identical switching times. These parts are active in production and ROHS3 compliant. The DG407DYZ variants feature an extended single supply voltage range (5V ~ 34V) and broader operating temperature range (-40°C ~ 85°C), providing enhanced environmental performance. Channel-to-channel matching is 5Ohm (versus 1.5Ohm on MAX307CWI), charge injection is 40pC (versus 2pC), and channel capacitance CD(off) is 80pF (versus 65pF). These differences are within acceptable tolerance for general-purpose multiplexing applications. DG407DYZ is supplied in Tube packaging (5351 units available), while DG407DYZ-T is supplied in Tape & Reel format (2536 units available). Selection between these variants depends on assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX307CWI+ be used as a direct replacement for MAX307CWI?

A: Yes. The MAX307CWI+ maintains identical electrical specifications and package configuration. The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 versus non-compliant). No circuit modifications are required.

Q: What are the key differences between MAX307CWI and DG407DYZ?

A: Both parts share the same 8:1 dual multiplexer topology, 100Ohm on-state resistance, and 28-SOIC package. Differences include: DG407DYZ has 5Ohm channel-to-channel matching (versus 1.5Ohm), 40pC charge injection (versus 2pC), 80pF CD(off) capacitance (versus 65pF), extended supply voltage range (5V ~ 34V), and wider operating temperature (-40°C ~ 85°C). These parameters are acceptable for standard multiplexing applications where precision matching is not critical.

Q: Which substitute is suitable for high-precision analog signal routing?

A: MAX307CWI+ is recommended for applications requiring tight channel-to-channel matching (1.5Ohm) and low charge injection (2pC). The DG407DYZ variants have higher charge injection (40pC) and matching tolerance (5Ohm), making them less suitable for precision analog applications.

Q: What is the difference between DG407DYZ and DG407DYZ-T?

A: Both parts are electrically identical. DG407DYZ is supplied in Tube packaging, while DG407DYZ-T is supplied in Tape & Reel (TR) format. Selection depends on assembly equipment compatibility and production volume requirements.

Q: Are all substitutes compatible with the original 28-SOIC footprint?

A: Yes. All substitute parts use the 28-SOIC (0.295", 7.50mm Width) package and are surface mount compatible. No PCB layout modifications are required.

Q: What are the moisture sensitivity considerations?

A: MAX307CWI and MAX307CWI+ have MSL 1 (Unlimited), requiring no special moisture control during storage. DG407DYZ variants have MSL 3 (168 Hours), requiring moisture control measures and baking procedures before reflow soldering if storage exceeds 168 hours in standard conditions.

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