ISL43110IBZ Equivalent & Substitute Parts

Part Overview

The ISL43110IBZ is a single-circuit SPST-NO (Single Pole Single Throw - Normally Open) analog switch manufactured by Renesas Electronics Corporation. This interface IC features 10Ohm on-state resistance and operates across a 2.4V to 12V supply range in an 8-SOIC surface mount package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	ISL43110IBZ Value
Switch Circuit Type	SPST - NO
Multiplexer/Demultiplexer Circuit	1:1
Number of Circuits	1
On-State Resistance (Max)	10Ohm
Voltage - Supply, Single (V+)	2.4V ~ 12V
Switch Time (Ton, Toff) (Max)	80ns, 50ns
Charge Injection	8pC
Channel Capacitance (CS(off), CD(off))	15pF, 15pF
Current - Leakage (IS(off)) (Max)	1nA
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the ISL43110IBZ is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Switch circuit type: SPST - NO
Multiplexer/Demultiplexer circuit: 1:1
Number of circuits: 1
On-state resistance: 10Ohm (exact match required for direct substitution)
Supply voltage range: Must encompass or exceed 2.4V ~ 12V
Operating temperature: Must support -40°C ~ 85°C minimum
Package type: 8-SOIC surface mount (identical footprint)

Secondary Compatibility Factors:

Switch timing characteristics (Ton, Toff)
Charge injection specifications
Channel capacitance values
Leakage current specifications
RoHS and MSL compliance

Parts meeting all primary criteria are classified as direct electrical equivalents. Parts with identical electrical specifications but different packaging (Tape & Reel vs. Tube) are functionally equivalent with different supply formats.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	Supply Voltage (V+)	Ton/Toff (Max)	Charge Injection	Operating Temp	Package	Product Status
ISL43110IBZ	Renesas Electronics	10Ohm	2.4V ~ 12V	80ns, 50ns	8pC	-40°C ~ 85°C	8-SOIC	Obsolete
TS12A4514D	Texas Instruments	10Ohm	2.7V ~ 12V	75ns, 45ns	-11.5pC	-40°C ~ 85°C	8-SOIC	Active
TS12A4514DR	Texas Instruments	10Ohm	2.7V ~ 12V	75ns, 45ns	-11.5pC	-40°C ~ 85°C	8-SOIC	Active
MAX4514CSA+	Analog Devices Inc./Maxim Integrated	20Ohm	2V ~ 12V	150ns, 100ns	2pC	0°C ~ 70°C	8-SOIC	Active
MAX4514CSA+T	Analog Devices Inc./Maxim Integrated	20Ohm	2V ~ 12V	150ns, 100ns	2pC	0°C ~ 70°C	8-SOIC	Active
MAX4514ESA+	Analog Devices Inc./Maxim Integrated	20Ohm	2V ~ 12V	150ns, 100ns	2pC	-40°C ~ 85°C	8-SOIC	Active
MAX4514ESA+T	Analog Devices Inc./Maxim Integrated	20Ohm	2V ~ 12V	150ns, 100ns	2pC	-40°C ~ 85°C	8-SOIC	Active
MAX4501ESA+	Analog Devices Inc./Maxim Integrated	250Ohm	2V ~ 12V	75ns, 50ns	1pC	-40°C ~ 85°C	8-SOIC	Active
ISL43110IHZ-T	Renesas Electronics	10Ohm	2.4V ~ 12V	80ns, 50ns	8pC	-40°C ~ 85°C	5-SOT	Obsolete

Engineering Selection Recommendations

Direct Electrical Equivalents (Recommended Primary Substitutes):

The TS12A4514D and TS12A4514DR (Texas Instruments) are the closest functional equivalents to the ISL43110IBZ. Both parts maintain the 10Ohm on-state resistance specification, support the required -40°C to 85°C operating temperature range, and are housed in identical 8-SOIC packages. These parts are currently in active production status, ensuring long-term availability. The primary difference is packaging format: TS12A4514D is supplied in Tube, while TS12A4514DR is supplied in Tape & Reel. Both are ROHS3 compliant with MSL 1 rating.

Secondary Substitutes (Application-Dependent):

The MAX4514 series (MAX4514CSA+, MAX4514CSA+T, MAX4514ESA+, MAX4514ESA+T) offers active production status and identical 8-SOIC packaging. However, these parts feature 20Ohm on-state resistance, which is twice that of the ISL43110IBZ. Selection of MAX4514 variants requires circuit-level analysis to confirm that the higher on-state resistance does not degrade system performance. The MAX4514ESA+ and MAX4514ESA+T variants support the full -40°C to 85°C temperature range, while MAX4514CSA+ and MAX4514CSA+T are limited to 0°C to 70°C.

Not Recommended:

The MAX4501ESA+ features 250Ohm on-state resistance, which represents a significant departure from the ISL43110IBZ specification and is suitable only for applications where on-state resistance is not a critical parameter.

The ISL43110IHZ-T, while electrically identical to the ISL43110IBZ, uses a 5-SOT package instead of 8-SOIC, requiring PCB redesign and is therefore not a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can I use MAX4514 parts as direct replacements for ISL43110IBZ?

A: MAX4514 parts are not direct electrical equivalents due to 20Ohm on-state resistance versus the ISL43110IBZ's 10Ohm specification. Substitution is possible only if circuit analysis confirms that doubled on-state resistance does not exceed system requirements for voltage drop, power dissipation, or signal integrity.

Q: What is the difference between TS12A4514D and TS12A4514DR?

A: Both parts are electrically identical with matching 10Ohm on-state resistance and -40°C to 85°C operating range. The difference is packaging format: TS12A4514D is supplied in Tube packaging, while TS12A4514DR is supplied in Tape & Reel format for automated assembly processes.

Q: Why is ISL43110IHZ-T not recommended as a substitute?

A: Although ISL43110IHZ-T is electrically identical to ISL43110IBZ, it uses a 5-SOT package instead of 8-SOIC. This package incompatibility requires PCB layout redesign and is therefore not a direct mechanical substitute.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in this reference—ISL43110IBZ, TS12A4514D, TS12A4514DR, MAX4514 series, and MAX4501ESA+—are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the impact of different MSL ratings on component handling?

A: ISL43110IBZ and all recommended substitutes carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions during storage or handling. This simplifies supply chain management and reduces component damage risk during manufacturing.

Q: Can I mix TS12A4514D and TS12A4514DR in the same production run?

A: Yes. Both parts are electrically and functionally identical. The choice between Tube and Tape & Reel formats depends on assembly process requirements and inventory management practices, not electrical performance.

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