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ISL43145IVZ Equivalent & Substitute Parts
Part Overview
The ISL43145IVZ is a 4-circuit SPST-NO/NC analog switch manufactured by Renesas Electronics Corporation, designed for general-purpose signal switching applications. It features 25Ohm on-state resistance and operates across supply voltages of 2.7V to 12V (single supply) or ±2.6V to 6V (dual supply). The device is housed in a 16-TSSOP surface-mount package with RoHS3 compliance and MSL Level 1 rating.
The ISL43145IVZ is classified as obsolete. Identifying functionally equivalent substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications currently using this component.
Substiute Parts
Key Parameters
| Parameter | ISL43145IVZ Value |
|---|---|
| Switch Circuit Configuration | SPST - NO/NC |
| Number of Circuits | 4 |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| On-State Resistance (Max) | 25Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm |
| Voltage - Supply, Single (V+) | 2.7V ~ 12V |
| Voltage - Supply, Dual (V±) | ±2.6V ~ 6V |
| Switch Time (Ton, Toff) (Max) | 65ns, 50ns |
| Charge Injection (Max) | 5pC |
| Channel Capacitance (CS(off), CD(off)) | 10pF, 26pF |
| Current - Leakage (IS(off)) (Max) | 100pA |
| Crosstalk | -89dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the ISL43145IVZ is determined by the following mandatory criteria:
Structural Requirements:
- Switch circuit configuration: SPST - NO/NC
- Number of circuits: 4
- Multiplexer/Demultiplexer circuit: 1:1
- Package type: 16-TSSOP surface mount
Electrical Compatibility Criteria:
- On-state resistance must not exceed the application's maximum allowable value
- Supply voltage range must encompass or exceed the original specification (2.7V ~ 12V single supply; ±2.6V ~ 6V dual supply)
- Operating temperature range must cover or exceed -40°C ~ 85°C
- Leakage current and crosstalk performance must meet or exceed the original specifications
Compliance Requirements:
- RoHS3 compliance mandatory
- MSL Level 1 rating required
Substitute parts are grouped by on-state resistance value, as this parameter directly impacts circuit performance and determines functional equivalence within the allowed electrical operating window.
Parameter Comparison
| Parameter | ISL43145IVZ | ADG1613BRUZ | ADG1613BRUZ-REEL7 | ADG4613BRUZ | ADG4613BRUZ-REEL7 | ADG5413BRUZ | ADG5413BRUZ-REEL7 | DG456EQ-T1-E3 | MAX393EUE+ | MAX4713EUE+ |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Renesas | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Vishay Siliconix | Analog Devices/Maxim | Analog Devices/Maxim |
| Switch Circuit | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC | SPST - NO/NC |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| On-State Resistance (Max) | 25Ohm | 1.1Ohm | 1.1Ohm | 5.1Ohm | 5.1Ohm | 10Ohm | 10Ohm | 5.3Ohm | 35Ohm | 25Ohm |
| Voltage - Supply, Single (V+) | 2.7V ~ 12V | 3.3V ~ 16V | 3.3V ~ 16V | 3V ~ 12V | 3V ~ 12V | 9V ~ 40V | 9V ~ 40V | 12V ~ 36V | 3V ~ 15V | 2.7V ~ 11V |
| Voltage - Supply, Dual (V±) | ±2.6V ~ 6V | ±3.3V ~ 8V | ±3.3V ~ 8V | ±3V ~ 5.5V | ±3V ~ 5.5V | ±9V ~ 22V | ±9V ~ 22V | ±5V ~ 15V | ±3V ~ 8V | ±2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 105°C | -40°C ~ 105°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Direct Resistance Match (25Ohm): MAX4713EUE+ provides identical on-state resistance to the ISL43145IVZ with active product status. Supply voltage range (2.7V ~ 11V single; ±2.7V ~ 5.5V dual) encompasses the original specification. Operating temperature range matches the original (-40°C ~ 85°C). RoHS3 compliance and MSL Level 1 rating are maintained. This part is the primary substitute for applications requiring no circuit redesign.
Lower Resistance Alternatives (1.1Ohm to 10Ohm): ADG1613BRUZ, ADG1613BRUZ-REEL7, ADG4613BRUZ, ADG4613BRUZ-REEL7, ADG5413BRUZ, and ADG5413BRUZ-REEL7 offer reduced on-state resistance values. These parts are suitable for applications where lower resistance improves signal integrity or reduces power dissipation. All maintain active product status, RoHS3 compliance, and MSL Level 1 rating. Supply voltage ranges vary; verify compatibility with your application's operating window.
Higher Resistance Alternative (35Ohm): MAX393EUE+ features 35Ohm on-state resistance and is suitable for applications tolerant of higher resistance. Operating temperature range matches the original (-40°C ~ 85°C). Supply voltage range (3V ~ 15V single; ±3V ~ 8V dual) encompasses the original specification. Active product status, RoHS3 compliance, and MSL Level 1 rating are confirmed.
Vishay Alternative (5.3Ohm): DG456EQ-T1-E3 from Vishay Siliconix offers 5.3Ohm on-state resistance with active product status. Supply voltage range (12V ~ 36V single; ±5V ~ 15V dual) differs from the original; verify compatibility with your application's supply constraints. Extended operating temperature range (-40°C ~ 125°C) exceeds the original specification. RoHS3 compliance and MSL Level 1 rating are maintained.
All substitute parts are available in 16-TSSOP surface-mount packaging and maintain electrical and environmental compliance certifications equivalent to the original ISL43145IVZ.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with lower on-state resistance than the ISL43145IVZ?
A: Yes. Lower on-state resistance (1.1Ohm to 10Ohm) reduces voltage drop across the switch and decreases power dissipation. This is beneficial for signal integrity and thermal performance. Verify that your circuit design accommodates the different resistance value and that the substitute part's supply voltage range matches your application requirements.
Q: What is the difference between ADG1613BRUZ, ADG1613BRUZ-REEL, and ADG1613BRUZ-REEL7?
A: These are the same part (ADG1613) with different packaging formats. ADG1613BRUZ is supplied in Tube packaging. ADG1613BRUZ-REEL is supplied in Tape & Reel (TR) format. ADG1613BRUZ-REEL7 is supplied in Cut Tape (CT) & Digi-Reel® format. Electrical specifications are identical; packaging choice depends on your procurement and assembly requirements.
Q: Is MAX4713EUE+ a direct replacement for ISL43145IVZ?
A: MAX4713EUE+ is the closest functional equivalent. It matches the 25Ohm on-state resistance, operates across the same temperature range (-40°C ~ 85°C), and is housed in the same 16-TSSOP package. Supply voltage range (2.7V ~ 11V single; ±2.7V ~ 5.5V dual) is slightly narrower than the original but covers standard operating conditions. No circuit redesign is required for most applications.
Q: Can I use ADG5413BRUZ if my application requires high supply voltages?
A: Yes. ADG5413BRUZ and ADG5413BRUZ-REEL7 support supply voltages of 9V ~ 40V (single) or ±9V ~ 22V (dual), making them suitable for high-voltage applications. However, on-state resistance is 10Ohm, which differs from the original 25Ohm. Verify that your circuit design accommodates this resistance change and that the higher voltage capability does not introduce compatibility issues with other components.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed are RoHS3 compliant with MSL Level 1 rating, matching the environmental and regulatory compliance of the original ISL43145IVZ.
Q: What is the significance of the 16-TSSOP package?
A: The 16-TSSOP (Thin Shrink Small Outline Package) is a surface-mount package with 0.173" width and 4.40mm body width. All substitute parts use this identical package, ensuring PCB footprint compatibility and eliminating the need for layout redesign.
Q: Why is the ISL43145IVZ classified as obsolete?
A: Obsolete status indicates that the manufacturer (Renesas Electronics Corporation) has discontinued production and support for this part. Active substitute parts from Analog Devices, Maxim Integrated, and Vishay Siliconix provide equivalent or superior functionality with ongoing manufacturer support and supply availability.
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