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ISL43113IB Equivalent & Substitute Parts
Part Overview
The ISL43113IB is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Renesas Electronics Corporation, designed for interface applications requiring low on-state resistance and fast switching performance. This component features a 20Ohm maximum on-state resistance in an 8-SOIC surface mount package and operates across a dual supply voltage range of ±1.5V to 6V.
The ISL43113IB is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across critical parameters including switch circuit topology, on-state resistance, operating temperature range, and physical packaging specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit | SPST - NC |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 20Ohm |
| Voltage - Supply, Dual (V±) | ±1.5V ~ 6V |
| Switch Time (Ton, Toff) (Max) | 70ns, 45ns |
| Charge Injection | 7pC |
| Channel Capacitance (CS(off), CD(off)) | 13pF, 13pF |
| 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 |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts for the ISL43113IB are qualified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:
Critical Matching Parameters:
- Switch Circuit: SPST - NC topology
- Number of Circuits: 1 circuit configuration
- On-State Resistance (Max): 20Ohm
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Operating Temperature Range: -40°C ~ 85°C (TA)
Allowable Parameter Variations:
- Voltage - Supply, Dual (V±): Substitute range must encompass or exceed the original ±1.5V ~ 6V specification
- Switch Time (Ton, Toff): Substitute values must not exceed original specifications
- Charge Injection: Variations permitted within application tolerance
- Channel Capacitance: Variations permitted within application tolerance
- Current - Leakage (IS(off)): Variations permitted within application tolerance
The Texas Instruments TS12A4517D and TS12A4517DR meet all critical matching parameters and are classified as active products, providing long-term availability and design support advantages over the obsolete ISL43113IB.
Parameter Comparison
| Parameter | ISL43113IB (Renesas) | TS12A4517D (TI) | TS12A4517DR (TI) |
|---|---|---|---|
| Manufacturer | Renesas Electronics Corporation | Texas Instruments | Texas Instruments |
| Switch Circuit | SPST - NC | SPST - NC | SPST - NC |
| Number of Circuits | 1 | 1 | 1 |
| On-State Resistance (Max) | 20Ohm | 20Ohm | 20Ohm |
| Voltage - Supply, Dual (V±) | ±1.5V ~ 6V | ±1V ~ 6V | ±1V ~ 6V |
| Switch Time Ton (Max) | 70ns | 75ns | 75ns |
| Switch Time Toff (Max) | 45ns | 45ns | 45ns |
| Charge Injection | 7pC | -13pC | -13pC |
| Channel Capacitance CS(off) | 13pF | 5.5pF | 5.5pF |
| Channel Capacitance CD(off) | 13pF | 5.5pF | 5.5pF |
| Current - Leakage IS(off) (Max) | 1nA | 5nA | 5nA |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant |
| Packaging Type | - | Tube | Tape & Reel (TR) |
Engineering Selection Recommendations
Both TS12A4517D and TS12A4517DR are direct functional equivalents to the ISL43113IB, with the following engineering considerations:
Product Status: The TS12A4517 series (both variants) are classified as active products, ensuring continued manufacturing support, availability, and technical documentation access. This contrasts with the ISL43113IB's obsolete status, which presents supply chain risk and limits design support resources.
Regulatory Compliance: The TS12A4517D and TS12A4517DR are ROHS3 compliant, meeting current environmental and regulatory requirements. The ISL43113IB is RoHS non-compliant, which may restrict use in applications subject to RoHS directives.
Packaging Variants: Selection between TS12A4517D (Tube packaging) and TS12A4517DR (Tape & Reel packaging) depends on production volume and assembly process requirements. Both maintain identical electrical specifications and 8-SOIC package geometry.
Electrical Performance: The TS12A4517 series demonstrates improved channel capacitance characteristics (5.5pF versus 13pF) and extended supply voltage range (±1V minimum versus ±1.5V minimum), providing enhanced performance margins in low-voltage applications.
Frequently Asked Questions (FAQ)
Q: Can TS12A4517D or TS12A4517DR be used as direct replacements for ISL43113IB in existing designs?
A: Yes. Both Texas Instruments parts maintain identical switch circuit topology (SPST-NC), on-state resistance (20Ohm), operating temperature range (-40°C to 85°C), and 8-SOIC package geometry. Pin-for-pin compatibility is confirmed across all critical electrical parameters.
Q: What are the differences between TS12A4517D and TS12A4517DR?
A: The primary difference is packaging format. TS12A4517D is supplied in Tube packaging, while TS12A4517DR is supplied in Tape & Reel (TR) format. Electrical specifications and performance characteristics are identical. Selection depends on production volume and assembly equipment compatibility.
Q: Are there supply voltage compatibility concerns when substituting TS12A4517 for ISL43113IB?
A: No. The TS12A4517 series operates across ±1V to 6V dual supply range, which encompasses the ISL43113IB specification of ±1.5V to 6V. Applications operating at the ISL43113IB's minimum supply voltage (±1.5V) will function within the TS12A4517 operating range.
Q: How do the leakage current specifications compare?
A: The ISL43113IB specifies maximum leakage current of 1nA, while the TS12A4517 series specifies 5nA maximum. For applications with strict leakage current requirements below 5nA, design verification is necessary to confirm acceptable performance margins.
Q: What is the significance of the lower channel capacitance in the TS12A4517 series?
A: The TS12A4517 series exhibits lower channel capacitance (5.5pF versus 13pF), which provides improved high-frequency performance and reduced signal distortion in AC-coupled applications. This represents a performance improvement over the ISL43113IB.
Q: Are there any compliance or certification differences?
A: Yes. The TS12A4517 series is ROHS3 compliant, while the ISL43113IB is RoHS non-compliant. For applications subject to RoHS directives or customer environmental requirements, the TS12A4517 series is the appropriate selection.
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