MAX308CSE Equivalent & Substitute Parts

Part Overview

The MAX308CSE is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC surface mount package. This part features 100Ohm on-state resistance and operates across a wide supply voltage range (5V to 30V single supply, or ±5V to ±20V dual supply). The MAX308CSE is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Multiplexer Configuration	8:1
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	1.5Ohm
Voltage - Supply, Single (V+)	5V ~ 30V
Voltage - Supply, Dual (V±)	±5V ~ 20V
Switch Time (Ton, Toff) (Max)	150ns, 150ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	3pF, 26pF
Current - Leakage (IS(off)) (Max)	750pA
Crosstalk	-92dB @ 100kHz
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the MAX308CSE is determined by the following critical parameters:

Primary Substitution Criteria:

Multiplexer configuration: 8:1
Package type: 16-SOIC surface mount
On-state resistance: 100Ohm nominal
Supply voltage compatibility: 5V to 30V single supply or ±5V to ±20V dual supply

Grouping Logic:

Group 1 - Direct Equivalent (Same Resistance, Active Status): MAX308CSE+ is the direct successor with identical electrical specifications but active product status and RoHS3 compliance.

Group 2 - Pin-Compatible, Lower Resistance (100Ohm): ADG408BRZ, ADG408BRZ-REEL, ADG408BRZ-REEL7, DG408DY-E3, and DG408DY-T1-E3 maintain 100Ohm on-state resistance and 16-SOIC packaging. These parts operate at fixed supply voltages (12V single or ±15V dual for ADG408 series; 5V to 36V single or ±5V to ±20V dual for DG408 series) and are suitable where supply voltage constraints are acceptable.

Group 3 - Pin-Compatible, Higher Resistance (200-380Ohm): ADG1208YRZ, ADG1208YRZ-REEL7, ADG1308BRZ-REEL7, and DG508BEY-T1-E3 maintain 8:1 multiplexer configuration and 16-SOIC packaging but feature increased on-state resistance (200Ohm to 380Ohm). These are suitable only for applications where higher on-state resistance is acceptable.

Parameter Comparison

Part Number	Manufacturer	Product Status	On-State Resistance (Max)	ΔRon (Max)	V+ Supply	V± Supply	Ton/Toff (Max)	Charge Injection	IS(off) (Max)	Operating Temp	RoHS Status	Packaging
MAX308CSE	Analog Devices/Maxim	Obsolete	100Ohm	1.5Ohm	5V ~ 30V	±5V ~ 20V	150ns, 150ns	2pC	750pA	0°C ~ 70°C	Non-compliant	16-SOIC Tube
MAX308CSE+	Analog Devices/Maxim	Active	100Ohm	1.5Ohm	5V ~ 30V	±5V ~ 20V	150ns, 150ns	2pC	750pA	0°C ~ 70°C	ROHS3 Compliant	16-SOIC Tube
ADG408BRZ	Analog Devices	Active	100Ohm	15Ohm (Max)	12V	±15V	—	20pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	16-SOIC Tube
ADG408BRZ-REEL	Analog Devices	Active	100Ohm	15Ohm (Max)	12V	±15V	—	20pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	16-SOIC CT & Digi-Reel
ADG408BRZ-REEL7	Analog Devices	Active	100Ohm	15Ohm (Max)	12V	±15V	—	20pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	16-SOIC CT & Digi-Reel
DG408DY-E3	Vishay Siliconix	Active	100Ohm	15Ohm (Max)	5V ~ 36V	±5V ~ 20V	150ns, 150ns	20pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	16-SOIC Tube
DG408DY-T1-E3	Vishay Siliconix	Active	100Ohm	15Ohm (Max)	5V ~ 36V	±5V ~ 20V	150ns, 150ns	20pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	16-SOIC CT & Digi-Reel
ADG1208YRZ	Analog Devices	Active	200Ohm	4.6Ohm	5V ~ 16.5V	±5V ~ 16.5V	95ns, 100ns	0.4pC	100pA	-40°C ~ 125°C	ROHS3 Compliant	16-SOIC Tube
ADG1208YRZ-REEL7	Analog Devices	Active	200Ohm	4.6Ohm	5V ~ 16.5V	±5V ~ 16.5V	95ns, 100ns	0.4pC	100pA	-40°C ~ 125°C	ROHS3 Compliant	16-SOIC CT & Digi-Reel
ADG1308BRZ-REEL7	Analog Devices	Active	210Ohm	5Ohm	5V ~ 16.5V	±5V ~ 16.5V	100ns, 100ns	2pC	1nA	-40°C ~ 105°C	ROHS3 Compliant	16-SOIC Tape & Reel
DG508BEY-T1-E3	Vishay Siliconix	Active	380Ohm	10Ohm	12V ~ 44V	±5V ~ 20V	250ns, 240ns	2pC	1nA	-40°C ~ 125°C	ROHS3 Compliant	16-SOIC Tape & Reel

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Choice): MAX308CSE+ is the preferred substitute. It maintains identical electrical specifications and pinout compatibility while offering active product status and RoHS3 compliance. This part eliminates obsolescence risk and meets modern regulatory requirements.

For Applications with Fixed 12V/±15V Supply: ADG408BRZ, ADG408BRZ-REEL, or ADG408BRZ-REEL7 are suitable alternatives. These parts maintain 100Ohm on-state resistance and 16-SOIC packaging. The fixed supply voltage requirement must be verified against system design. All variants are RoHS3 compliant and active.

For Applications with Extended Supply Voltage Range (5V to 36V): DG408DY-E3 or DG408DY-T1-E3 (Vishay Siliconix) provide broader supply voltage compatibility while maintaining 100Ohm on-state resistance. These parts are RoHS3 compliant and active. The DG408DY-T1-E3 variant is available in tape and reel packaging for high-volume applications.

For Applications Tolerating Higher On-State Resistance: ADG1208YRZ, ADG1208YRZ-REEL7, ADG1308BRZ-REEL7, or DG508BEY-T1-E3 are acceptable only where circuit design permits increased on-state resistance (200Ohm to 380Ohm). These parts offer improved leakage current performance and extended operating temperature ranges. All are RoHS3 compliant and active.

Compliance Considerations: All recommended substitutes are RoHS3 compliant and carry active product status, eliminating obsolescence concerns. The original MAX308CSE is RoHS non-compliant; migration to compliant alternatives is necessary for new designs and long-term production support.

Frequently Asked Questions (FAQ)

Q: Can MAX308CSE+ be used as a direct drop-in replacement for MAX308CSE? A: Yes. MAX308CSE+ is electrically and mechanically identical to MAX308CSE, with identical pinout, on-state resistance (100Ohm), supply voltage ranges, and switching characteristics. The primary differences are active product status and RoHS3 compliance.

Q: What is the key difference between the ADG408 and DG408 series? A: Both maintain 100Ohm on-state resistance and 16-SOIC packaging. ADG408 operates at fixed 12V single supply or ±15V dual supply. DG408 supports broader supply voltage ranges (5V to 36V single supply or ±5V to ±20V dual supply), making it suitable for applications requiring flexible supply voltage.

Q: Can ADG1208YRZ or ADG1308BRZ-REEL7 replace MAX308CSE in existing designs? A: Only if circuit design permits increased on-state resistance. ADG1208YRZ features 200Ohm on-state resistance; ADG1308BRZ-REEL7 features 210Ohm. These higher resistance values may affect signal integrity and bandwidth in sensitive applications. Electrical simulation or testing is necessary to confirm compatibility.

Q: What packaging options are available for high-volume production? A: Tape and reel (TR) and cut tape with digi-reel (CT & Digi-Reel) packaging options are available for most substitutes. ADG408BRZ-REEL7, ADG1208YRZ-REEL7, ADG1308BRZ-REEL7, DG408DY-T1-E3, and DG508BEY-T1-E3 are configured for automated assembly processes.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All recommended substitutes carry RoHS3 compliance status. The original MAX308CSE is RoHS non-compliant; all active alternatives meet current regulatory requirements.

Q: What is the operating temperature range difference between MAX308CSE and substitutes? A: MAX308CSE operates 0°C to 70°C. Most substitutes extend this range to -40°C to 85°C or -40°C to 125°C, providing improved thermal performance for industrial and automotive applications.

Q: Can DG508BEY-T1-E3 be used where MAX308CSE is specified? A: DG508BEY-T1-E3 is pin-compatible and maintains 8:1 multiplexer configuration in 16-SOIC packaging. However, its 380Ohm on-state resistance is significantly higher than MAX308CSE's 100Ohm. Use only if circuit design accommodates this resistance increase.

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