ISL43142IBZ Equivalent & Substitute Parts

Part Overview

The ISL43142IBZ is a 4-circuit IC switch manufactured by Renesas Electronics Corporation, featuring SPST NO/NC configuration with 65Ohm on-state resistance in a 16-SOIC package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device operates across a wide supply voltage range (2.7V to 12V single supply, or ±2.6V to ±6V dual supply) and is suitable for analog signal switching applications requiring low on-state resistance and fast switching times.

Key Parameters

Parameter	ISL43142IBZ
Manufacturer	Renesas Electronics Corporation
Switch Circuit Type	SPST - NO/NC
Number of Circuits	4
On-State Resistance (Max)	65Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm
Voltage - Supply, Single (V+)	2.7V ~ 12V
Voltage - Supply, Dual (V±)	±2.6V ~ 6V
Switch Time (Ton, Toff) (Max)	80ns, 30ns
Charge Injection	1pC
Channel Capacitance (CS(off), CD(off))	7pF, 7pF
Current - Leakage (IS(off)) (Max)	1nA
Crosstalk	-90dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the ISL43142IBZ is determined by the following critical parameters:

Primary Substitution Criteria:

Switch circuit type (SPST NO/NC configuration required)
Number of circuits (4-circuit configuration)
Package type (16-SOIC form factor)
On-state resistance compatibility (65Ohm nominal)
Supply voltage range overlap (minimum 2.7V to 12V single supply support)
Operating temperature range (-40°C to 85°C)

Secondary Compatibility Factors:

Channel-to-channel matching (ΔRon tolerance)
Leakage current specifications
Crosstalk performance
Charge injection characteristics

The substitute parts are grouped into two categories based on functional equivalence:

Category A - Direct Functional Equivalents (16-SOIC, 4-circuit, SPST NO/NC): MAX393 series (MAX393CSE+, MAX393CSE+T, MAX393ESE+, MAX393ESE+T), MAX4713 series (MAX4713ESE+, MAX4713ESE+T), MAX4553ESE+, MAX4513 series (MAX4513ESE+, MAX4513ESE+T)

Category B - Reduced Circuit Count Alternative (SOT-23-8, 2-circuit, SPST NO): ISL43120IHZ-T (same manufacturer, reduced circuit count, different package)

Parameter Comparison

Parameter	ISL43142IBZ	MAX393CSE+	MAX393ESE+	MAX4713ESE+	MAX4553ESE+	MAX4513ESE+	ISL43120IHZ-T
Manufacturer	Renesas	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Renesas
Switch Circuit	SPST NO/NC	SPST NO/NC	SPST NO/NC	SPST NO/NC	SPST NO/NC	SPST NO/NC	SPST NO
Number of Circuits	4	4	4	4	4	4	2
On-State Resistance (Max)	65Ohm	35Ohm	35Ohm	25Ohm	120Ohm	160Ohm	20Ohm
ΔRon (Max)	2Ohm	300mOhm	300mOhm	200mOhm	1Ohm	-	800mOhm
Voltage - Supply Single (V+)	2.7V ~ 12V	3V ~ 15V	3V ~ 15V	2.7V ~ 11V	2V ~ 12V	9V ~ 36V	2.7V ~ 12V
Voltage - Supply Dual (V±)	±2.6V ~ 6V	±3V ~ 8V	±3V ~ 8V	±2.7V ~ 5.5V	±2V ~ 6V	±4.5V ~ 18V	-
Switch Time Ton (Max)	80ns	130ns	130ns	125ns	110ns	500ns	35ns
Switch Time Toff (Max)	30ns	75ns	75ns	80ns	90ns	400ns	30ns
Charge Injection	1pC	2pC	2pC	25pC	2pC	1.5pC	5pC
Channel Capacitance CS(off)	7pF	9pF	9pF	8pF	4.6pF	10pF	8pF
Channel Capacitance CD(off)	7pF	9pF	9pF	8pF	3pF	5pF	8pF
Leakage Current IS(off) (Max)	1nA	100pA	100pA	500pA	1nA	500pA	100pA
Crosstalk	-90dB @ 100kHz	-85dB @ 1MHz	-85dB @ 1MHz	-87dB @ 1MHz	-90dB @ 100kHz	-66dB @ 1MHz	-105dB @ 1MHz
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	SOT-23-8
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

For Direct 16-SOIC Package Replacement (Same Form Factor):

MAX4713ESE+ and MAX4713ESE+T are the closest functional equivalents to the ISL43142IBZ. Both maintain the 16-SOIC package, 4-circuit SPST NO/NC configuration, and support the required 2.7V to 11V single supply range with ±2.7V to ±5.5V dual supply capability. These parts are active products with ROHS3 compliance and MSL 1 rating, providing superior moisture handling compared to the obsolete ISL43142IBZ. The 25Ohm on-state resistance is lower than the original 65Ohm specification, which reduces power dissipation in switching applications.

MAX393ESE+ and MAX393ESE+T offer 16-SOIC packaging with 4-circuit configuration and extended operating temperature range (-40°C to 85°C). The 35Ohm on-state resistance provides a middle ground between low-resistance and higher-resistance alternatives. These parts support 3V to 15V single supply and ±3V to ±8V dual supply ranges, with active product status and MSL 1 rating.

MAX4553ESE+ provides the closest on-state resistance match at 120Ohm, maintaining 16-SOIC packaging and 4-circuit configuration. This part supports 2V to 12V single supply and ±2V to ±6V dual supply, with operating temperature range of -40°C to 85°C and active product status.

MAX4513ESE+ and MAX4513ESE+T are suitable for applications requiring higher supply voltages (9V to 36V single supply, ±4.5V to ±18V dual supply). The 160Ohm on-state resistance is higher than the original specification but maintains 16-SOIC packaging and 4-circuit configuration with active product status.

For Reduced Circuit Count Applications (SOT-23-8 Package):

ISL43120IHZ-T is a same-manufacturer alternative from Renesas with 2-circuit configuration in SOT-23-8 package. This part is suitable only for applications requiring fewer switching channels. It provides superior crosstalk performance (-105dB @ 1MHz) and lower on-state resistance (20Ohm) with active product status and MSL 3 rating matching the original part's moisture sensitivity classification.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and EAR99 ECCN classification consistent with the original ISL43142IBZ. All substitute parts are active products, eliminating obsolescence risk associated with the original part. MSL 1 rated alternatives (MAX393, MAX4713, MAX4513 series) provide superior moisture handling for storage and handling compared to the MSL 3 rated original part.

Frequently Asked Questions (FAQ)

Q: Can MAX4713ESE+ directly replace ISL43142IBZ in existing PCB layouts?

A: Yes, MAX4713ESE+ maintains identical 16-SOIC package dimensions (0.154" width, 3.90mm) and pin-compatible SPST NO/NC 4-circuit configuration. PCB layout and footprints require no modification. Electrical performance differs in on-state resistance (25Ohm vs. 65Ohm) and supply voltage range (2.7V to 11V vs. 2.7V to 12V), which must be verified against circuit requirements.

Q: What is the primary difference between MAX393 and MAX4713 series substitutes?

A: Both maintain 16-SOIC packaging and 4-circuit SPST NO/NC configuration. MAX4713 series offers lower on-state resistance (25Ohm) and lower supply voltage floor (2.7V), while MAX393 series supports higher supply voltages (up to 15V) with 35Ohm on-state resistance. Selection depends on specific supply voltage and resistance requirements of the application.

Q: Why does MAX4553ESE+ have higher on-state resistance than the original ISL43142IBZ?

A: MAX4553ESE+ is specified at 120Ohm on-state resistance, which is higher than the ISL43142IBZ at 65Ohm. This part is suitable for applications where higher resistance is acceptable or where the lower leakage current (1nA) and superior crosstalk performance (-90dB @ 100kHz) provide system-level advantages. Applications sensitive to on-state resistance should select MAX4713 or MAX393 series instead.

Q: Is ISL43120IHZ-T a suitable replacement for ISL43142IBZ?

A: ISL43120IHZ-T is a same-manufacturer alternative but with reduced functionality: 2-circuit configuration versus 4-circuit, and SOT-23-8 package versus 16-SOIC. This part is suitable only for applications requiring 2 switching channels. For applications requiring all 4 circuits, this part is not compatible.

Q: What are the moisture sensitivity implications of switching from MSL 3 to MSL 1 rated parts?

A: The original ISL43142IBZ is MSL 3 rated (168-hour floor life), while most substitute parts (MAX393, MAX4713, MAX4513 series) are MSL 1 rated (unlimited floor life). MSL 1 rating provides superior moisture tolerance and eliminates the need for baking procedures after extended storage. This represents an improvement in manufacturing and supply chain flexibility.

Q: Can MAX4513ESE+ be used in applications with 2.7V supply voltage?

A: No. MAX4513ESE+ requires minimum 9V single supply voltage (or ±4.5V dual supply). Applications operating at 2.7V to 12V must use MAX4713ESE+, MAX393ESE+, or MAX4553ESE+ instead.

Q: What is the significance of channel-to-channel matching (ΔRon) in substitute selection?

A: Channel-to-channel matching specifies the maximum resistance variation between individual circuits within the same package. ISL43142IBZ specifies 2Ohm maximum matching. MAX393 and MAX4713 series provide tighter matching (300mOhm and 200mOhm respectively), which is advantageous for precision analog switching applications. MAX4513 does not specify ΔRon and may exhibit larger channel-to-channel variations.

Q: Are all substitute parts available in both tube and tape & reel packaging?

A: No. MAX393 series and MAX4713 series are available in both Tube and Tape & Reel (TR) packaging options. MAX4553ESE+ and MAX4513ESE+ are available in Tube packaging. ISL43120IHZ-T is available in Cut Tape (CT) and Digi-Reel packaging. Packaging selection should match manufacturing and supply chain requirements.

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