MAX4519CSD Equivalent & Substitute Parts

Part Overview

The MAX4519CSD is a 2-circuit IC switch with DPST-NO configuration and 100Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as Obsolete, which necessitates identification of suitable substitute parts for ongoing design requirements and production continuity. The part operates across single supply (2V to 15V) and dual supply (±2.7V to ±8V) configurations, making it suitable for signal routing and multiplexing applications in interface circuits.

Key Parameters

Parameter	Specification
Switch Circuit Type	DPST - NO
Multiplexer/Demultiplexer Configuration	2:1
Number of Circuits	2
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	4Ohm (Max)
Voltage - Supply, Single (V+)	2V ~ 15V
Voltage - Supply, Dual (V±)	±2.7V ~ 8V
Switch Time (Ton, Toff) (Max)	150ns, 150ns
Charge Injection (Max)	5pC
Channel Capacitance (CS(off), CD(off))	5pF, 10pF
Current - Leakage (IS(off)) (Max)	100pA
Crosstalk	-92dB @ 100kHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4519CSD is determined by strict equivalence across the following critical parameters:

Switch circuit topology: DPST - NO configuration
Multiplexer/demultiplexer ratio: 2:1
Number of independent circuits: 2
On-state resistance: 100Ohm maximum
Channel-to-channel matching: 4Ohm maximum
Supply voltage ranges: Single (2V ~ 15V) and dual (±2.7V ~ ±8V)
Switching speed: 150ns maximum for both Ton and Toff
Charge injection: 5pC maximum
Channel capacitance: 5pF (CS(off)) and 10pF (CD(off))
Leakage current: 100pA maximum
Crosstalk performance: -92dB @ 100kHz
Operating temperature range: 0°C ~ 70°C
Package: 14-SOIC surface mount

The MAX4519CSD+ meets all these criteria and qualifies as a direct substitute based on identical electrical and mechanical specifications.

Parameter Comparison

Parameter	MAX4519CSD (Main Part)	MAX4519CSD+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	DPST - NO	DPST - NO
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	2	2
On-State Resistance (Max)	100Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	4Ohm (Max)	4Ohm (Max)
Voltage - Supply, Single (V+)	2V ~ 15V	2V ~ 15V
Voltage - Supply, Dual (V±)	±2.7V ~ 8V	±2.7V ~ 8V
Switch Time (Ton, Toff) (Max)	150ns, 150ns	150ns, 150ns
Charge Injection (Max)	5pC	5pC
Channel Capacitance (CS(off), CD(off))	5pF, 10pF	5pF, 10pF
Current - Leakage (IS(off)) (Max)	100pA	100pA
Crosstalk	-92dB @ 100kHz	-92dB @ 100kHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The MAX4519CSD+ is the appropriate substitute for the obsolete MAX4519CSD. Both parts share identical electrical and mechanical specifications, ensuring functional compatibility in existing circuit designs. The primary distinction is product status: the MAX4519CSD+ is Active, providing assured long-term availability and supply chain continuity.

From a compliance perspective, the MAX4519CSD+ offers superior regulatory positioning. It meets ROHS3 compliance requirements, whereas the original MAX4519CSD is RoHS non-compliant. Both parts maintain REACH Unaffected status and EAR99 export classification. For new designs or production transitions, the MAX4519CSD+ is the recommended selection due to its active status and enhanced compliance profile.

Frequently Asked Questions (FAQ)

Q: Can MAX4519CSD+ directly replace MAX4519CSD in existing designs?

A: Yes. The MAX4519CSD+ provides electrical and mechanical equivalence across all specified parameters, including switch topology, on-state resistance, supply voltage ranges, switching speed, and package configuration. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: The MAX4519CSD is classified as Obsolete. The MAX4519CSD+ is an Active product from the same manufacturer, ensuring continued availability and supply chain reliability.

Q: Are there packaging differences between these parts?

A: Both parts use 14-SOIC surface mount packaging with identical dimensions (0.154", 3.90mm width). The MAX4519CSD+ is supplied in Tube packaging, while the original part does not specify packaging format. This does not affect electrical performance or PCB compatibility.

Q: Does the RoHS compliance difference affect circuit performance?

A: No. RoHS compliance is a regulatory and material composition requirement, not an electrical performance specification. Both parts meet identical electrical and thermal specifications. The MAX4519CSD+ offers improved regulatory alignment for applications subject to RoHS requirements.

Q: Are the supply voltage specifications identical?

A: Yes. Both parts operate across single supply (2V to 15V) and dual supply (±2.7V to ±8V) configurations with identical specifications.

Q: What is the significance of identical crosstalk and leakage specifications?

A: These parameters ensure signal integrity and power consumption characteristics remain unchanged. The -92dB crosstalk @ 100kHz and 100pA maximum leakage current specifications are maintained across both parts, preserving analog signal quality and standby power performance.

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