MAX333ACPP Equivalent & Substitute Parts

Part Overview

The MAX333ACPP is a 4-circuit SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This component functions as a 2:1 multiplexer/demultiplexer with 45Ohm on-state resistance and operates across single or dual supply voltage ranges. The MAX333ACPP is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPDT (Single Pole Double Throw)
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	4
On-State Resistance (Max)	45Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm (Max)
Voltage - Supply, Single (V+)	10V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	175ns, 145ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	5pF
Current - Leakage (IS(off)) (Max)	250pA
Crosstalk	-78dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX333ACPP is determined by the following critical parameters:

Switch Circuit Configuration: Must be SPDT
Multiplexer/Demultiplexer Circuit: Must be 2:1
Number of Circuits: Must be 4
On-State Resistance (Max): Must not exceed 45Ohm
Package / Case: Must be 20-DIP (0.300", 7.62mm)
Mounting Type: Must be Through Hole

Substitute parts identified are grouped as follows:

Group 1 - Direct Packaging Variant: MAX333ACPP+ represents the same base product (MAX333) with identical electrical specifications but supplied in Tube packaging instead of standard packaging. This variant maintains full electrical compatibility.

Group 2 - Manufacturer-Recommended Alternative: ADG333ABNZ is the manufacturer-recommended substitute from Analog Devices Inc. This part maintains the core SPDT 2:1 4-circuit architecture and 20-DIP package but introduces variations in secondary electrical parameters including channel-to-channel matching, supply voltage ranges, switch timing, and operating temperature range.

Parameter Comparison

Parameter	MAX333ACPP (Main)	MAX333ACPP+ (Variant)	ADG333ABNZ (Alternative)
Switch Circuit	SPDT	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1	2:1
Number of Circuits	4	4	4
On-State Resistance (Max)	45Ohm	45Ohm	45Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm (Max)	2Ohm (Max)	5Ohm
Voltage - Supply, Single (V+)	10V ~ 30V	10V ~ 30V	3V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±3V ~ 20V
Switch Time (Ton, Toff) (Max)	175ns, 145ns	175ns, 145ns	90ns, 80ns (Typ)
Charge Injection	2pC	2pC	2pC
Channel Capacitance (CS(off), CD(off))	5pF	5pF	7pF
Current - Leakage (IS(off)) (Max)	250pA	250pA	250pA
Crosstalk	-78dB @ 1MHz	-78dB @ 1MHz	-85dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MAX333ACPP+ (Direct Variant)

The MAX333ACPP+ is electrically identical to the MAX333ACPP with identical specifications across all measured parameters. The distinction is packaging format (Tube vs. standard). This variant is classified as Active product status and achieves ROHS3 compliance, addressing regulatory requirements of the obsolete predecessor. Selection of MAX333ACPP+ is appropriate for applications requiring exact electrical performance matching with improved supply chain availability and regulatory compliance.

ADG333ABNZ (Manufacturer-Recommended Alternative)

The ADG333ABNZ is designated as the manufacturer-recommended substitute and maintains core functional architecture (SPDT 2:1 4-circuit configuration) within the same 20-DIP package. This alternative introduces measurable differences in secondary electrical parameters: reduced switch timing (90ns/80ns typical vs. 175ns/145ns maximum), improved crosstalk performance (-85dB vs. -78dB @ 1MHz), expanded operating temperature range (-40°C to 85°C vs. 0°C to 70°C), and lower supply voltage floor (3V vs. 10V single supply). Channel-to-channel matching tolerance is relaxed (5Ohm vs. 2Ohm maximum) and channel capacitance increases (7pF vs. 5pF). The ADG333ABNZ is Active product status with ROHS3 compliance. Selection is appropriate for applications where expanded temperature range or improved switching speed provides system benefit, provided that relaxed matching tolerance and increased capacitance do not conflict with circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX333ACPP+ be used as a direct replacement for MAX333ACPP?

A: Yes. MAX333ACPP+ maintains identical electrical specifications across all parameters. The difference is packaging format. Both parts are 4-circuit SPDT 2:1 switches in 20-DIP configuration with 45Ohm on-state resistance and identical supply voltage ranges.

Q: What are the key differences between MAX333ACPP and ADG333ABNZ?

A: Both maintain the core SPDT 2:1 4-circuit architecture and 20-DIP package. ADG333ABNZ offers faster switching (90ns/80ns typical vs. 175ns/145ns maximum), wider operating temperature range (-40°C to 85°C vs. 0°C to 70°C), lower minimum single supply voltage (3V vs. 10V), and improved crosstalk (-85dB vs. -78dB @ 1MHz). Trade-offs include relaxed channel-to-channel matching (5Ohm vs. 2Ohm maximum) and increased channel capacitance (7pF vs. 5pF).

Q: Is ADG333ABNZ suitable for low-voltage applications?

A: ADG333ABNZ supports single supply operation down to 3V, compared to MAX333ACPP minimum of 10V. Dual supply operation begins at ±3V for ADG333ABNZ versus ±4.5V for MAX333ACPP. Verify that relaxed channel-to-channel matching (5Ohm) and increased capacitance (7pF) are acceptable for the specific application.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both MAX333ACPP+ and ADG333ABNZ are ROHS3 compliant. The original MAX333ACPP is RoHS non-compliant. Regulatory requirements may necessitate migration to compliant alternatives.

Q: Can these parts be used interchangeably in existing designs?

A: MAX333ACPP and MAX333ACPP+ are fully interchangeable. ADG333ABNZ requires circuit evaluation due to differences in channel-to-channel matching tolerance, channel capacitance, and operating temperature range. Verify that these parameter variations do not impact circuit performance before substitution.

Q: What is the significance of the 20-DIP package specification?

A: All three parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging. Pin-to-pin compatibility is maintained across all variants, enabling direct socket substitution without PCB modification.

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