ISL43113IBZ Equivalent & Substitute Parts

Part Overview

The ISL43113IBZ 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 is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates with dual supply voltage (±1.5V ~ 6V) and delivers 20Ohm maximum on-state resistance with switching times of 70ns (turn-on) and 45ns (turn-off).

Key Parameters

Parameter	Value
Switch Circuit Type	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 (Max)	70ns
Switch Time - Toff (Max)	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)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ISL43113IBZ is determined by the following critical parameters:

Primary Matching Criteria:

Switch circuit topology: SPST - NC
Circuit configuration: 1:1 multiplexer/demultiplexer
On-state resistance: 20Ohm maximum
Dual supply voltage range compatibility: ±1.5V ~ 6V minimum
Operating temperature range: -40°C ~ 85°C
Surface mount technology

Secondary Compatibility Factors:

Package type (8-SOIC preferred for direct PCB layout compatibility)
Switching speed performance (Ton, Toff specifications)
Leakage current specifications
RoHS and regulatory compliance status

The substitute parts identified below meet the primary matching criteria. Variations in secondary parameters (such as charge injection, channel capacitance, and leakage current) reflect different semiconductor process technologies but do not prevent functional substitution when electrical performance requirements are satisfied.

Parameter Comparison

Parameter	ISL43113IBZ (Main)	ISL43113IHZ-T	TS12A4517D	TS12A4517DR
Manufacturer	Renesas Electronics	Renesas Electronics	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Switch Circuit	SPST - NC	SPST - NC	SPST - NC	SPST - NC
Multiplexer/Demultiplexer	1:1	1:1	1:1	1:1
Number of Circuits	1	1	1	1
On-State Resistance (Max)	20Ohm	20Ohm	20Ohm	20Ohm
Voltage - Supply, Dual (V±)	±1.5V ~ 6V	±1.5V ~ 6V	±1V ~ 6V	±1V ~ 6V
Switch Time - Ton (Max)	70ns	70ns	75ns	75ns
Switch Time - Toff (Max)	45ns	45ns	45ns	45ns
Charge Injection	7pC	7pC	-13pC	-13pC
Channel Capacitance (CS(off), CD(off))	13pF, 13pF	13pF, 13pF	5.5pF, 5.5pF	5.5pF, 5.5pF
Current - Leakage (IS(off)) (Max)	1nA	1nA	5nA	5nA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC	5-SOT (SC-74A)	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

ISL43113IHZ-T (Renesas Electronics): This part maintains identical electrical specifications to the ISL43113IBZ while offering active product status. It is ROHS3 compliant and carries MSL-3 rating. The primary design consideration is package transition from 8-SOIC to 5-SOT (SC-74A), which requires PCB layout modification. This substitute is optimal for designs where package footprint change is acceptable and Renesas component continuity is preferred.

TS12A4517D (Texas Instruments, Tube Packaging): This Texas Instruments alternative provides 8-SOIC package compatibility, eliminating PCB layout changes. Electrical performance is equivalent with active product status and MSL-1 rating. Supply voltage range extends to ±1V minimum (versus ±1.5V for ISL43113IBZ), providing broader operational flexibility. Switching time performance is marginally slower (75ns Ton versus 70ns), which is acceptable for most interface applications. This substitute is suitable for designs requiring direct package compatibility and extended supply voltage range.

TS12A4517DR (Texas Instruments, Tape & Reel Packaging): Functionally identical to TS12A4517D with tape and reel packaging for high-volume production environments. All electrical and compliance specifications remain equivalent. This variant is appropriate for automated assembly processes and production quantities requiring continuous reel format.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original ISL43113IBZ specification.

Frequently Asked Questions (FAQ)

Q: Can ISL43113IHZ-T be used as a direct replacement for ISL43113IBZ without circuit modification?

A: ISL43113IHZ-T is electrically equivalent but requires PCB layout modification due to package change from 8-SOIC to 5-SOT (SC-74A). Electrical functionality is preserved; only physical footprint differs.

Q: What is the key difference between TS12A4517D and TS12A4517DR?

A: Both parts are electrically identical. TS12A4517D is supplied in tube packaging for lower-volume applications, while TS12A4517DR is supplied in tape and reel format for automated high-volume production.

Q: Does the ±1V minimum supply voltage of TS12A4517 series affect compatibility with ISL43113IBZ designs?

A: TS12A4517 series operates at ±1V minimum versus ±1.5V for ISL43113IBZ. This represents expanded operational range and does not restrict compatibility. Designs operating within ±1.5V ~ 6V range function identically on both part families.

Q: Are there PCB layout considerations when substituting ISL43113IBZ with TS12A4517D?

A: TS12A4517D maintains 8-SOIC package compatibility with ISL43113IBZ, allowing direct PCB footprint reuse without layout modification. No design changes are required beyond component substitution.

Q: What is the significance of MSL rating differences between substitute parts?

A: ISL43113IBZ and TS12A4517 series carry MSL-1 (unlimited moisture sensitivity), while ISL43113IHZ-T carries MSL-3 (168 hours). MSL-3 requires controlled storage and handling within 168 hours of package opening. For applications with standard storage conditions, MSL-1 parts offer simplified logistics.

Q: Can these substitutes be used interchangeably in production?

A: ISL43113IHZ-T requires PCB layout modification due to package change. TS12A4517D and TS12A4517DR are directly interchangeable with ISL43113IBZ at the PCB level, with TS12A4517DR preferred for high-volume automated assembly.

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