MAX350C/D Equivalent & Substitute Parts

Part Overview

The MAX350C/D is a 2-circuit SP4T (single-pole, 4-throw) analog switch IC with 100Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated. This die-form component is designed for precision signal routing and multiplexing applications requiring low on-state resistance and minimal crosstalk.

The MAX350C/D is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing production requirements, system maintenance, and new design implementations where this die form may not be readily available or preferred for manufacturing processes.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SP4T (Single-Pole, 4-Throw)
Number of Circuits	2
Multiplexer/Demultiplexer Circuit	4:1
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon Max)	16Ohm
Supply Voltage - Single (V+)	2.7V ~ 16V
Supply Voltage - Dual (V±)	±2.7V ~ 8V
Switch Time - Turn-On (Ton Max)	275ns
Switch Time - Turn-Off (Toff Max)	150ns
Charge Injection	1pC
Channel Capacitance - Off-State (CS(off), CD(off))	2pF, 2pF
Current - Leakage (IS(off) Max)	100pA
Crosstalk	-90dB @ 100kHz
Operating Temperature Range	0°C ~ 70°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX350C/D is determined by strict equivalence across the following critical parameters:

Switch Circuit Type: SP4T configuration with 2 independent circuits
Multiplexer Ratio: 4:1 channel selection
On-State Resistance: 100Ohm maximum specification
Channel Matching: 16Ohm maximum ΔRon tolerance
Supply Voltage Compatibility: Single supply 2.7V ~ 16V and dual supply ±2.7V ~ 8V
Switching Performance: Ton ≤ 275ns, Toff ≤ 150ns
Signal Integrity: Charge injection 1pC, crosstalk -90dB @ 100kHz
Operating Temperature: 0°C ~ 70°C range
Compliance: ROHS3 compliant, MSL 1 rating

The MAX350CAP+ qualifies as a direct substitute based on identical electrical specifications across all parameters listed above. The primary difference is packaging format: the MAX350C/D is supplied as a die, while the MAX350CAP+ is packaged in 20-SSOP form factor.

Parameter Comparison

Parameter	MAX350C/D (Main Part)	MAX350CAP+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active
Switch Circuit	SP4T	SP4T
Number of Circuits	2	2
Multiplexer/Demultiplexer	4:1	4:1
On-State Resistance (Max)	100Ohm	100Ohm
Channel-to-Channel Matching (ΔRon Max)	16Ohm	16Ohm
Supply Voltage - Single (V+)	2.7V ~ 16V	2.7V ~ 16V
Supply Voltage - Dual (V±)	±2.7V ~ 8V	±2.7V ~ 8V
Switch Time - Ton (Max)	275ns	275ns
Switch Time - Toff (Max)	150ns	150ns
Charge Injection	1pC	1pC
Channel Capacitance (CS(off), CD(off))	2pF, 2pF	2pF, 2pF
Current - Leakage (IS(off) Max)	100pA	100pA
Crosstalk	-90dB @ 100kHz	-90dB @ 100kHz
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	Die	20-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The MAX350CAP+ is the active-status equivalent for the obsolete MAX350C/D. Both components share identical electrical specifications and are manufactured by the same supplier, ensuring functional compatibility in signal routing and multiplexing applications.

Selection between these parts is determined by packaging requirements:

MAX350C/D (Die): Suitable for hybrid circuit integration, custom packaging, or applications requiring bare die implementation.
MAX350CAP+ (20-SSOP): Suitable for standard PCB assembly, automated pick-and-place manufacturing, and applications requiring conventional surface-mount packaging.

Both parts maintain ROHS3 compliance and MSL 1 rating, confirming equivalent environmental and regulatory status. The MAX350CAP+ is recommended for new designs and production continuity due to its active product status and standard packaging availability.

Frequently Asked Questions (FAQ)

Q: Can MAX350CAP+ directly replace MAX350C/D in existing designs?

A: Electrical substitution is complete. The MAX350CAP+ provides identical on-state resistance, switching performance, supply voltage ranges, and signal integrity specifications. Physical substitution depends on packaging compatibility: the MAX350C/D is a die form, while MAX350CAP+ is a 20-SSOP package. PCB layout and assembly process must accommodate the 20-SSOP form factor.

Q: What are the key parameters that define substitution eligibility?

A: Substitution is based on SP4T switch configuration, 4:1 multiplexer ratio, 100Ohm on-state resistance, 16Ohm channel matching tolerance, 2.7V ~ 16V single supply and ±2.7V ~ 8V dual supply compatibility, 275ns/150ns switching times, 1pC charge injection, 2pF channel capacitance, 100pA leakage current, and -90dB crosstalk specification.

Q: Are there compliance differences between MAX350C/D and MAX350CAP+?

A: Both parts are ROHS3 compliant with MSL 1 rating. No compliance differences exist. The MAX350CAP+ carries EAR99 ECCN classification, while the MAX350C/D is marked obsolete. For new production, MAX350CAP+ compliance status is current and applicable.

Q: What is the impact of switching from die to 20-SSOP packaging?

A: The 20-SSOP package (0.209" width, 5.30mm) requires standard PCB footprint design and automated assembly compatibility. Die form requires hybrid circuit integration or custom packaging. Electrical performance remains identical; the change is manufacturing and assembly process dependent.

Q: Is the MAX350CAP+ suitable for 0°C ~ 70°C operating temperature applications?

A: Yes. The MAX350CAP+ maintains the 0°C ~ 70°C operating temperature range specification identical to the MAX350C/D, confirming compatibility for the same thermal environment applications.

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