MAX4534CPD Equivalent & Substitute Parts

Part Overview

The MAX4534CPD is a single-circuit SP4T (Single-Pole, 4-Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This component features a 400Ohm on-state resistance and operates across a wide supply voltage range of 9V to 36V (single supply) or ±4.5V to ±20V (dual supply). The device is packaged in a 14-DIP through-hole format.

The MAX4534CPD is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure long-term component availability for new production runs and system updates.

Key Parameters

Parameter	Value
Switch Circuit Type	SP4T
Multiplexer/Demultiplexer Circuit	4:1
Number of Circuits	1
On-State Resistance (Max)	400Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm
Voltage - Supply, Single (V+)	9V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	275ns, 200ns
Charge Injection	1pC
Operating Temperature	0°C ~ 70°C
Package / Case	14-DIP (0.300", 7.62mm)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MAX4534CPD is evaluated based on the following critical parameters:

Functional Compatibility:

Switch circuit topology must be SP4T
Multiplexer/demultiplexer configuration must be 4:1
Single-circuit configuration (1 circuit)
Package type must be 14-DIP through-hole

Electrical Performance Criteria:

On-state resistance must not exceed the original specification (400Ohm maximum)
Supply voltage ranges must be compatible with or exceed the original operating range
Operating temperature range must cover the original specification (0°C ~ 70°C minimum)

The MAX4518CPD+ qualifies as a direct substitute based on these parameters. While it features improved electrical characteristics (100Ohm on-state resistance versus 400Ohm), it maintains identical functional topology, package format, and operating temperature range. The lower on-state resistance represents an enhancement rather than a limitation for substitution purposes.

Parameter Comparison

Parameter	MAX4534CPD	MAX4518CPD+
Switch Circuit Type	SP4T	SP4T
Multiplexer/Demultiplexer Circuit	4:1	4:1
Number of Circuits	1	1
On-State Resistance (Max)	400Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm	4Ohm (Max)
Voltage - Supply, Single (V+)	9V ~ 36V	2V ~ 15V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±2.7V ~ 8V
Switch Time (Ton, Toff) (Max)	275ns, 200ns	150ns, 150ns
Charge Injection	1pC	5pC (Max)
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The MAX4518CPD+ is the recommended substitute for the obsolete MAX4534CPD based on the following factors:

Product Status: The MAX4518CPD+ maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete MAX4534CPD.

Regulatory Compliance: The MAX4518CPD+ is ROHS3 compliant, meeting current environmental and regulatory requirements. The original MAX4534CPD is RoHS non-compliant, which may present procurement and regulatory challenges in modern manufacturing environments.

Functional Equivalence: Both devices share identical switch topology (SP4T), circuit configuration (4:1 multiplexer), and package format (14-DIP through-hole). Operating temperature ranges are identical.

Performance Enhancement: The MAX4518CPD+ provides superior electrical performance with reduced on-state resistance (100Ohm versus 400Ohm) and faster switch times (150ns versus 275ns/200ns). These improvements are beneficial for signal integrity and system performance.

Supply Voltage Consideration: The MAX4518CPD+ operates at lower supply voltages (2V ~ 15V single supply; ±2.7V ~ 8V dual supply) compared to the MAX4534CPD (9V ~ 36V single supply; ±4.5V ~ 20V dual supply). Circuit designs must verify compatibility with the reduced supply voltage range of the substitute component.

Frequently Asked Questions (FAQ)

Q: Can the MAX4518CPD+ directly replace the MAX4534CPD in existing designs?

A: Direct replacement is possible from a functional and package perspective. Both devices are SP4T analog switches in 14-DIP packages with identical pin configurations. However, the reduced supply voltage range of the MAX4518CPD+ (2V ~ 15V versus 9V ~ 36V) requires verification that your circuit operates within the substitute's voltage specifications.

Q: What are the key differences between these two parts?

A: The primary differences are on-state resistance (100Ohm versus 400Ohm), supply voltage ranges, switch timing, and product status. The MAX4518CPD+ offers improved performance characteristics and active production status, while the MAX4534CPD is obsolete.

Q: Is the 14-DIP package identical between both parts?

A: Yes. Both the MAX4534CPD and MAX4518CPD+ use the same 14-DIP (0.300", 7.62mm) through-hole package format, ensuring mechanical and electrical pin compatibility.

Q: Does the lower on-state resistance of the MAX4518CPD+ affect circuit design?

A: The lower on-state resistance (100Ohm) of the MAX4518CPD+ is an improvement that reduces signal attenuation and power dissipation. Existing designs will benefit from this characteristic without requiring circuit modifications.

Q: What is the significance of the RoHS compliance difference?

A: The MAX4518CPD+ is ROHS3 compliant, meeting current environmental regulations required for many markets and applications. The MAX4534CPD's non-compliance may restrict its use in regulated industries and modern supply chains.

Q: Are there any supply voltage limitations I should consider?

A: Yes. If your design requires supply voltages above 15V (single supply) or ±8V (dual supply), the MAX4518CPD+ cannot be used. Verify that your circuit operates within the substitute's voltage range before implementation.

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