ISL43144IV Equivalent & Substitute Parts

Part Overview

The ISL43144IV is a 4-circuit SPST-NO analog switch IC manufactured by Renesas Electronics Corporation in 16-TSSOP surface mount packaging. This device features 25Ohm on-state resistance and operates across single supply (2.7V to 12V) or dual supply (±2.6V to 6V) configurations. The ISL43144IV is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Active alternatives with comparable or enhanced electrical characteristics are available from Analog Devices, Maxim Integrated, and Vishay Siliconix.

Key Parameters

Parameter	ISL43144IV Value
Switch Circuit Type	SPST - NO
Number of Circuits	4
Multiplexer/Demultiplexer Configuration	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 (Max)	65ns
Switch Time Toff (Max)	50ns
Charge Injection (Max)	5pC
Channel Capacitance CS(off)	10pF
Channel Capacitance CD(off)	26pF
Current - Leakage IS(off) (Max)	100pA
Crosstalk @ 1MHz	-89dB
Operating Temperature	-40°C ~ 85°C
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the ISL43144IV is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Switch circuit type: SPST - NO (mandatory match)
Number of circuits: 4 (mandatory match)
Multiplexer/Demultiplexer configuration: 1:1 (mandatory match)
Package / Case: 16-TSSOP surface mount (mandatory match)
Mounting type: Surface mount (mandatory match)

Secondary Compatibility Parameters:

On-state resistance range that encompasses or closely matches 25Ohm
Supply voltage ranges that overlap with 2.7V ~ 12V (single) or ±2.6V ~ 6V (dual)
Operating temperature range that meets or exceeds -40°C ~ 85°C
Leakage current specifications within acceptable limits for the application

Substitute parts are grouped into three categories based on on-state resistance characteristics:

Category A - Direct Equivalent (25Ohm): ISL43144IVZ, MAX4712CUE+, MAX4712CUE+T Category B - Lower Resistance (1.1Ohm to 10Ohm): ADG1612BRUZ, ADG1612BRUZ-REEL, ADG1612BRUZ-REEL7, ADG5412BRUZ, ADG5412BRUZ-REEL7, DG455EQ-T1-E3 Category C - Higher Resistance (35Ohm): MAX392EUE+

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	ΔRon (Max)	V+ Range	V± Range	Ton/Toff (Max)	IS(off) (Max)	Crosstalk @ 1MHz	Temp Range	Product Status	RoHS Status	Packaging
ISL43144IV	Renesas	25Ohm	500mOhm	2.7V ~ 12V	±2.6V ~ 6V	65ns / 50ns	100pA	-89dB	-40°C ~ 85°C	Obsolete	Non-compliant	Tube
ISL43144IVZ	Renesas	25Ohm	500mOhm	2.7V ~ 12V	±2.6V ~ 6V	65ns / 50ns	100pA	-89dB	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
ADG1612BRUZ	Analog Devices	1.1Ohm	30mOhm	3.3V ~ 16V	±3.3V ~ 8V	156ns / 87ns	300pA	-110dB	-40°C ~ 125°C	Active	ROHS3 Compliant	Tube
ADG1612BRUZ-REEL	Analog Devices	1.1Ohm	30mOhm	3.3V ~ 16V	±3.3V ~ 8V	156ns / 87ns	300pA	-110dB	-40°C ~ 125°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
ADG1612BRUZ-REEL7	Analog Devices	1.1Ohm	30mOhm	3.3V ~ 16V	±3.3V ~ 8V	156ns / 87ns	300pA	-110dB	-40°C ~ 125°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
ADG5412BRUZ	Analog Devices	10Ohm	350mOhm	9V ~ 40V	±9V ~ 22V	187ns / 138ns	250pA	-70dB	-40°C ~ 125°C	Active	ROHS3 Compliant	Tube
ADG5412BRUZ-REEL7	Analog Devices	10Ohm	350mOhm	9V ~ 40V	±9V ~ 22V	187ns / 138ns	250pA	-70dB	-40°C ~ 125°C	Active	ROHS3 Compliant	Tape & Reel
DG455EQ-T1-E3	Vishay Siliconix	5.3Ohm	120mOhm	12V ~ 36V	±5V ~ 15V	118ns / 97ns	500pA	-85dB	-40°C ~ 125°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
MAX392EUE+	Analog Devices/Maxim	35Ohm	300mOhm	3V ~ 15V	±3V ~ 8V	130ns / 75ns	100pA	-85dB	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
MAX4712CUE+	Analog Devices/Maxim	25Ohm	200mOhm	2.7V ~ 11V	±2.7V ~ 5.5V	125ns / 80ns	500pA	-87dB	0°C ~ 70°C	Active	ROHS3 Compliant	Tube
MAX4712CUE+T	Analog Devices/Maxim	25Ohm	200mOhm	2.7V ~ 11V	±2.7V ~ 5.5V	125ns / 80ns	500pA	-87dB	0°C ~ 70°C	Active	ROHS3 Compliant	Tape & Reel

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance): ISL43144IVZ is the active equivalent of ISL43144IV from Renesas Electronics. This part maintains identical electrical specifications including 25Ohm on-state resistance, 500mOhm channel matching, and supply voltage ranges. ISL43144IVZ is ROHS3 compliant and currently in active production status, making it the preferred choice for designs requiring exact electrical compatibility with the obsolete ISL43144IV.

Equivalent Resistance Category (25Ohm): MAX4712CUE+ and MAX4712CUE+T from Analog Devices/Maxim Integrated provide 25Ohm on-state resistance matching the ISL43144IV. These parts are ROHS3 compliant and active. Note that MAX4712 variants operate at 0°C to 70°C temperature range, which is narrower than the ISL43144IV's -40°C to 85°C range. Supply voltage ranges are slightly reduced (2.7V ~ 11V single, ±2.7V ~ 5.5V dual). Channel matching is superior at 200mOhm versus 500mOhm.

Lower Resistance Alternatives (1.1Ohm to 10Ohm): ADG1612BRUZ series (1.1Ohm) and ADG5412BRUZ series (10Ohm) from Analog Devices offer significantly lower on-state resistance with improved channel matching. These parts are ROHS3 compliant and active. ADG1612 variants support extended temperature range (-40°C to 125°C) and higher supply voltages (3.3V ~ 16V single, ±3.3V ~ 8V dual). ADG5412 variants operate at higher voltage ranges (9V ~ 40V single, ±9V ~ 22V dual) suitable for higher-voltage applications. Lower resistance reduces power dissipation in signal paths.

Mid-Range Resistance Alternative (5.3Ohm): DG455EQ-T1-E3 from Vishay Siliconix provides 5.3Ohm on-state resistance with ROHS3 compliance and active status. This part operates at higher supply voltages (12V ~ 36V single, ±5V ~ 15V dual) and extended temperature range (-40°C to 125°C). Suitable for applications requiring moderate resistance reduction with higher voltage operation.

Higher Resistance Alternative (35Ohm): MAX392EUE+ from Analog Devices/Maxim Integrated offers 35Ohm on-state resistance with ROHS3 compliance and active status. This part maintains the ISL43144IV's -40°C to 85°C temperature range and 100pA leakage current specification. Supply voltage ranges are 3V ~ 15V (single) and ±3V ~ 8V (dual). Suitable for applications where slightly higher resistance is acceptable.

Frequently Asked Questions (FAQ)

Q: Can ISL43144IVZ be used as a direct replacement for ISL43144IV? A: Yes. ISL43144IVZ is the active production equivalent with identical electrical specifications. The only differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). All electrical parameters, package type, and pin configuration are identical.

Q: What is the primary difference between ISL43144IV and ADG1612BRUZ? A: The primary difference is on-state resistance: ISL43144IV is 25Ohm while ADG1612BRUZ is 1.1Ohm. ADG1612BRUZ also features superior channel matching (30mOhm vs. 500mOhm), extended temperature range (-40°C to 125°C vs. -40°C to 85°C), and higher supply voltage capability (3.3V ~ 16V vs. 2.7V ~ 12V). Lower resistance reduces signal path power dissipation.

Q: Are all substitute parts available in 16-TSSOP packaging? A: Yes. All listed substitute parts are available in 16-TSSOP surface mount packaging with identical physical dimensions (0.173", 4.40mm width). Packaging format varies (Tube, Cut Tape & Digi-Reel, Tape & Reel) but the component footprint remains consistent.

Q: Which substitute part has the lowest on-state resistance? A: ADG1612BRUZ, ADG1612BRUZ-REEL, and ADG1612BRUZ-REEL7 all feature 1.1Ohm on-state resistance, the lowest among all listed substitutes. These parts are suitable for applications requiring minimal signal path resistance and power dissipation.

Q: Can MAX4712CUE+ be used in applications requiring -40°C operation? A: No. MAX4712CUE+ and MAX4712CUE+T operate at 0°C to 70°C temperature range, which does not include -40°C. For applications requiring -40°C minimum operating temperature, use ISL43144IVZ, ADG1612 series, ADG5412 series, DG455EQ-T1-E3, or MAX392EUE+.

Q: What is the difference between ADG5412BRUZ and ADG5412BRUZ-REEL7? A: Both parts have identical electrical specifications (10Ohm on-state resistance, -40°C to 125°C operation, 9V ~ 40V supply range). The difference is packaging format: ADG5412BRUZ is supplied in Tube packaging, while ADG5412BRUZ-REEL7 is supplied in Tape & Reel (TR) format for automated assembly.

Q: Is RoHS compliance required for my application? A: ISL43144IV is RoHS non-compliant. All listed substitute parts are ROHS3 compliant. If RoHS compliance is a design requirement, any of the substitute parts listed are suitable. If RoHS compliance is not required, ISL43144IV or ISL43144IVZ can be used based on availability.

Q: Which substitute part offers the best crosstalk performance? A: ADG1612BRUZ, ADG1612BRUZ-REEL, and ADG1612BRUZ-REEL7 offer the best crosstalk performance at -110dB @ 1MHz, compared to ISL43144IV at -89dB @ 1MHz. This represents 21dB improvement in crosstalk isolation.

Q: Can DG455EQ-T1-E3 be used in low-voltage applications? A: No. DG455EQ-T1-E3 requires minimum supply voltage of 12V (single) or ±5V (dual), which is higher than ISL43144IV's 2.7V minimum. This part is suitable only for applications with 12V or higher supply voltages.

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