MAX333AEPP Equivalent & Substitute Parts

Part Overview

The MAX333AEPP 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 supply (10V ~ 30V) or dual supply (±4.5V ~ 20V) configurations. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPDT
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	-40°C ~ 85°C (TA)
Package / Case	20-DIP (0.300", 7.62mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the MAX333AEPP is determined by the following critical parameters:

Circuit topology: SPDT configuration with 2:1 multiplexer/demultiplexer function and 4 independent circuits
On-state resistance: Maximum 45Ohm specification
Supply voltage compatibility: Single supply (10V ~ 30V) or dual supply (±4.5V ~ 20V) operation
Package and mounting: 20-DIP through-hole form factor with identical pinout
Operating temperature range: -40°C ~ 85°C

The identified substitutes meet these core requirements while maintaining functional and electrical compatibility with the original MAX333AEPP design.

Parameter Comparison

Parameter	MAX333AEPP	MAX333AEPP+	ADG333ABNZ
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.
Product Status	Obsolete	Active	Active
Switch Circuit	SPDT	SPDT	SPDT
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	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)	20-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MAX333AEPP+ (Direct Manufacturer Upgrade)

The MAX333AEPP+ is the direct successor to the MAX333AEPP, offering identical electrical specifications and pinout compatibility. This part maintains the same 45Ohm on-state resistance, 2Ohm channel matching, and switching characteristics. The primary distinction is product status: MAX333AEPP+ is active and ROHS3 compliant, whereas the original MAX333AEPP is obsolete and RoHS non-compliant. For applications requiring regulatory compliance or long-term supply assurance, MAX333AEPP+ is the preferred direct replacement.

ADG333ABNZ (Manufacturer-Recommended Alternative)

The ADG333ABNZ provides functional equivalence with enhanced performance characteristics. While maintaining the same 4-circuit SPDT topology and 45Ohm on-state resistance, the ADG333ABNZ offers improved switching speed (90ns/80ns typical versus 175ns/145ns maximum), lower supply voltage floor (3V single supply and ±3V dual supply versus 10V/±4.5V), and superior crosstalk performance (-85dB versus -78dB @ 1MHz). Channel-to-channel matching is 5Ohm maximum compared to 2Ohm for the MAX333AEPP. The ADG333ABNZ is active and ROHS3 compliant. Selection of this part is appropriate when lower supply voltages or faster switching performance are required within the application constraints.

Frequently Asked Questions (FAQ)

Q: Can MAX333AEPP+ be used as a direct replacement for MAX333AEPP?

A: Yes. The MAX333AEPP+ maintains identical electrical specifications, pinout, and package configuration. Both parts are 4-circuit SPDT switches with 45Ohm on-state resistance and operate across the same supply voltage ranges (10V ~ 30V single supply or ±4.5V ~ 20V dual supply). The primary difference is product status and regulatory compliance.

Q: What are the key differences between MAX333AEPP+ and ADG333ABNZ?

A: Both parts share the same circuit topology and on-state resistance. The ADG333ABNZ offers faster switching times (90ns/80ns typical), lower minimum supply voltages (3V single supply and ±3V dual supply), and superior crosstalk performance (-85dB). The MAX333AEPP+ maintains tighter channel-to-channel matching (2Ohm versus 5Ohm). Selection depends on whether the application prioritizes switching speed and low-voltage operation or channel matching precision.

Q: Are all three parts available in the same package?

A: Yes. MAX333AEPP, MAX333AEPP+, and ADG333ABNZ are all supplied in 20-DIP (0.300", 7.62mm) through-hole packages with identical pinout and mounting configuration.

Q: Which substitute part should be selected for new designs?

A: For new designs, MAX333AEPP+ or ADG333ABNZ are both appropriate selections. MAX333AEPP+ provides direct compatibility with existing MAX333AEPP designs. ADG333ABNZ is suitable when faster switching performance or lower supply voltage operation is required. Both parts are active products with ROHS3 compliance.

Q: Is the ADG333ABNZ compatible with existing MAX333AEPP circuit designs?

A: The ADG333ABNZ is functionally compatible with MAX333AEPP designs in terms of circuit topology, package, and pinout. However, the ADG333ABNZ exhibits different channel-to-channel matching (5Ohm versus 2Ohm) and faster switching characteristics. Applications with tight matching requirements or timing-critical specifications should evaluate these parameter differences before substitution.

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