MAX308ESE Equivalent & Substitute Parts

Part Overview

The MAX308ESE is an 8:1 analog multiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC surface mount package. This component functions as a single-circuit switch with 100Ohm on-state resistance, designed for signal routing and multiplexing applications across industrial and commercial temperature ranges (-40°C to 85°C).

The MAX308ESE is classified as obsolete. Identifying functionally equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Key Parameters

Parameter	MAX308ESE Value
Multiplexer Configuration	8:1
Number of Circuits	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	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX308ESE is determined by the following critical parameters:

Primary Substitution Criteria:

Multiplexer configuration: 8:1
Number of circuits: 1
Package type: 16-SOIC surface mount
On-state resistance: 100Ohm nominal (allows tolerance variation)
Operating temperature range: minimum -40°C to 85°C
Supply voltage compatibility: single supply 5V ~ 30V or dual supply ±5V ~ 20V

Secondary Compatibility Factors:

Channel-to-channel matching (ΔRon)
Switch timing characteristics (Ton, Toff)
Leakage current specifications
Charge injection and capacitance parameters

Substitute parts must maintain the 8:1 multiplexer topology and 100Ohm on-state resistance class to ensure functional equivalence. Parts with significantly different on-state resistance values (200Ohm, 210Ohm, 380Ohm) represent alternative performance classes and are listed for reference but require circuit re-evaluation.

Parameter Comparison

Parameter	MAX308ESE	MAX308ESE+	ADG408BRZ	ADG408BRZ-REEL	ADG408BRZ-REEL7	DG408DY-E3	DG408DY-T1-E3
Multiplexer Configuration	8:1	8:1	8:1	8:1	8:1	8:1	8:1
On-State Resistance (Max)	100Ohm	100Ohm	100Ohm	100Ohm	100Ohm	100Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	1.5Ohm	1.5Ohm	15Ohm (Max)	15Ohm (Max)	15Ohm (Max)	15Ohm (Max)	15Ohm (Max)
Voltage - Supply, Single (V+)	5V ~ 30V	5V ~ 30V	12V	12V	12V	5V ~ 36V	5V ~ 36V
Voltage - Supply, Dual (V±)	±5V ~ 20V	±5V ~ 20V	±15V	±15V	±15V	±5V ~ 20V	±5V ~ 20V
Switch Time (Ton, Toff) (Max)	150ns, 150ns	150ns, 150ns	—	—	—	150ns, 150ns	150ns, 150ns
Charge Injection	2pC	2pC	20pC	20pC	20pC	20pC	20pC
Channel Capacitance (CS(off), CD(off))	3pF, 26pF	3pF, 26pF	11pF, 40pF	11pF, 40pF	11pF, 40pF	3pF, 26pF	3pF, 26pF
Current - Leakage (IS(off)) (Max)	750pA	750pA	500pA	500pA	500pA	500pA	500pA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

MAX308ESE+ is the direct successor to MAX308ESE, manufactured by Analog Devices Inc./Maxim Integrated. It maintains identical electrical specifications including 100Ohm on-state resistance, 1.5Ohm channel matching, 150ns switching time, and 2pC charge injection. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant). This part is recommended for new designs and obsolescence mitigation.

Alternative Substitutes (100Ohm Class):

ADG408BRZ, ADG408BRZ-REEL, and ADG408BRZ-REEL7 are Analog Devices 8:1 multiplexers with 100Ohm on-state resistance. These parts differ in supply voltage specifications (12V single supply, ±15V dual supply versus the MAX308ESE's 5V ~ 30V / ±5V ~ 20V range) and exhibit higher channel-to-channel matching tolerance (15Ohm Max versus 1.5Ohm). All three variants are ROHS3 Compliant and Active status. Selection among these three depends on packaging requirements: tube (ADG408BRZ), cut tape with digi-reel (ADG408BRZ-REEL), or cut tape with digi-reel 7-inch (ADG408BRZ-REEL7).

DG408DY-E3 and DG408DY-T1-E3 are Vishay Siliconix 8:1 multiplexers with 100Ohm on-state resistance. These parts support wider single supply voltage range (5V ~ 36V) and maintain the same dual supply range (±5V ~ 20V) as the MAX308ESE. Both are ROHS3 Compliant and Active status. Selection depends on packaging: tube (DG408DY-E3) or cut tape with digi-reel (DG408DY-T1-E3).

Reference Parts (Alternative Performance Classes):

ADG1208YRZ, ADG1208YRZ-REEL7, ADG1308BRZ-REEL7, and DG508BEY-T1-E3 are listed for reference. These parts feature on-state resistance values of 200Ohm, 210Ohm, and 380Ohm respectively, representing different performance classes. These are not direct substitutes but may be evaluated if circuit design permits higher on-state resistance.

Frequently Asked Questions (FAQ)

Q: Can MAX308ESE+ be used as a direct replacement for MAX308ESE?

A: Yes. MAX308ESE+ is the active production equivalent with identical electrical specifications. The primary differences are product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant). No circuit modifications are required.

Q: What is the key difference between MAX308ESE and ADG408BRZ variants?

A: Both are 8:1 multiplexers with 100Ohm on-state resistance in 16-SOIC packages. The primary differences are: (1) supply voltage specifications—ADG408BRZ requires 12V single supply and ±15V dual supply, while MAX308ESE supports 5V ~ 30V single and ±5V ~ 20V dual; (2) channel-to-channel matching tolerance—ADG408BRZ specifies 15Ohm Max versus MAX308ESE's 1.5Ohm; (3) charge injection—ADG408BRZ specifies 20pC versus MAX308ESE's 2pC. Circuit re-evaluation is required if supply voltage or precision matching is critical.

Q: Are DG408DY-E3 and DG408DY-T1-E3 compatible with MAX308ESE?

A: Both Vishay Siliconix parts are functionally compatible 8:1 multiplexers with 100Ohm on-state resistance and identical 16-SOIC packaging. DG408DY-E3 and DG408DY-T1-E3 support wider single supply voltage (5V ~ 36V) compared to MAX308ESE (5V ~ 30V). The difference between these two is packaging: DG408DY-E3 is tube packaged, while DG408DY-T1-E3 is cut tape with digi-reel. Both are ROHS3 Compliant and Active status.

Q: What does the packaging designation mean (Tube, Cut Tape, Digi-Reel, REEL7)?

A: Packaging designations indicate the physical form for component delivery: Tube refers to plastic tubes for manual handling; Cut Tape (CT) & Digi-Reel refers to standard 7-inch reel tape; REEL7 specifies 7-inch reel format for automated pick-and-place equipment. These are logistical variations of the same component and do not affect electrical performance.

Q: Why do some substitute parts have higher on-state resistance (200Ohm, 210Ohm, 380Ohm)?

A: These represent alternative performance classes within the 8:1 multiplexer family. Higher on-state resistance may be acceptable in applications where signal attenuation is not critical or where lower power dissipation is prioritized. Circuit re-evaluation is required to confirm compatibility.

Q: Is RoHS compliance important for MAX308ESE substitution?

A: RoHS compliance status depends on application requirements and regulatory jurisdiction. MAX308ESE is RoHS non-compliant, while all listed active substitutes (MAX308ESE+, ADG408BRZ variants, DG408DY variants) are ROHS3 Compliant. For new designs or regulated applications, ROHS3 Compliant parts are recommended.

Q: Can I use parts with different channel-to-channel matching (ΔRon)?

A: Channel-to-channel matching tolerance affects signal uniformity across multiplexer channels. MAX308ESE specifies 1.5Ohm matching, while ADG408BRZ and DG408DY variants specify 15Ohm Max. Substitution is possible if circuit design tolerates the higher matching variation. Applications requiring tight channel uniformity should prioritize MAX308ESE+ or parts with comparable matching specifications.

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