ISL43141IBZ Equivalent & Substitute Parts

Part Overview

The ISL43141IBZ is a 4-circuit SPST-NO IC switch manufactured by Renesas Electronics Corporation, designed for low-voltage analog signal switching applications. This part features 65Ohm on-state resistance and operates across supply voltages of 2.7V to 12V (single supply) or ±2.6V to 6V (dual supply). The ISL43141IBZ is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility through matching switch topology, circuit count, package type, and electrical performance within acceptable operating ranges.

Key Parameters

Parameter	ISL43141IBZ	Unit
Switch Circuit Type	SPST - NO	—
Number of Circuits	4	—
Multiplexer/Demultiplexer Circuit	1:1	—
On-State Resistance (Max)	65	Ohm
Channel-to-Channel Matching (ΔRon)	2	Ohm
Voltage - Supply, Single (V+)	2.7 ~ 12	V
Voltage - Supply, Dual (V±)	±2.6 ~ 6	V
Switch Time (Ton, Toff) (Max)	80, 30	ns
Charge Injection	1	pC
Channel Capacitance (CS(off), CD(off))	7, 7	pF
Current - Leakage (IS(off)) (Max)	1	nA
Crosstalk	-90	dB @ 100kHz
Operating Temperature	-40 ~ 85	°C
Package / Case	16-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution of the ISL43141IBZ is determined by strict adherence to the following criteria:

Mandatory Compatibility Parameters:

Switch circuit topology: SPST - NO (Single Pole Single Throw - Normally Open)
Circuit count: 4 independent circuits
Multiplexer configuration: 1:1
Package type: 16-SOIC surface mount
Pin count and footprint: 16-pin SOIC (0.154", 3.90mm width)

Electrical Performance Boundaries:

On-state resistance must not exceed application requirements; lower resistance values are acceptable
Supply voltage ranges must overlap with the ISL43141IBZ operating window (2.7V ~ 12V single supply minimum)
Switch timing characteristics (Ton, Toff) must be compatible with signal bandwidth requirements
Leakage current specifications must meet application noise and power consumption limits
Crosstalk performance must maintain signal integrity at operating frequencies

Compliance Requirements:

RoHS3 compliance mandatory
Operating temperature range must support -40°C to 85°C minimum

Substitute parts are grouped by on-state resistance value, as this parameter directly impacts signal attenuation, power dissipation, and circuit performance. Parts with significantly different resistance characteristics require application-level verification but remain functionally compatible within the 16-SOIC package constraint.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Ohm)	ΔRon (Ohm)	V+ Range (V)	V± Range (V)	Ton/Toff (ns)	IS(off) (Max)	Crosstalk (dB)	Temp Range (°C)	Packaging	Status
ISL43141IBZ	Renesas Electronics	65	2	2.7 ~ 12	±2.6 ~ 6	80, 30	1 nA	-90 @ 100kHz	-40 ~ 85	Tube	Obsolete
MAX4712ESE+	Analog Devices/Maxim	25	0.2	2.7 ~ 11	±2.7 ~ 5.5	125, 80	500 pA	-87 @ 1MHz	-40 ~ 85	Tube	Active
MAX392CSE+	Analog Devices/Maxim	35	0.3	3 ~ 15	±3 ~ 8	130, 75	100 pA	-85 @ 1MHz	0 ~ 70	Tube	Active
MAX392CSE+T	Analog Devices/Maxim	35	0.3	3 ~ 15	±3 ~ 8	130, 75	100 pA	-85 @ 1MHz	0 ~ 70	Tape & Reel	Active
MAX4552ESE+	Analog Devices/Maxim	120	1	2 ~ 12	±2 ~ 6	110, 90	1 nA	-90 @ 100kHz	-40 ~ 85	Tube	Active
MAX4512ESE+	Analog Devices/Maxim	160	—	9 ~ 36	±4.5 ~ 18	500, 400	500 pA	-66 @ 1MHz	-40 ~ 85	Tube	Active
MAX4512ESE+T	Analog Devices/Maxim	160	—	9 ~ 36	±4.5 ~ 18	500, 400	500 pA	-66 @ 1MHz	-40 ~ 85	Tape & Reel	Active
MAX4512CSE+	Analog Devices/Maxim	160	—	9 ~ 36	±4.5 ~ 18	500, 400	500 pA	-66 @ 1MHz	0 ~ 70	Tube	Active
ALD4202MSCL	Advanced Linear Devices	135	2.7	3 ~ 12	±1.5 ~ 6	240, 130	100 pA	-90 @ 100kHz	0 ~ 70	Tube	Active
DG455EY-T1-E3	Vishay Siliconix	5.3	0.12	12 ~ 36	±5 ~ 15	118, 97	500 pA	-85 @ 1MHz	-40 ~ 125	Tape & Reel	Active

Engineering Selection Recommendations

Primary Substitutes (Closest Electrical Match):

MAX4712ESE+ and MAX4552ESE+ are the preferred substitutes for the ISL43141IBZ. Both parts maintain the 4-circuit SPST-NO topology in 16-SOIC packaging and support the full -40°C to 85°C operating temperature range. MAX4712ESE+ offers lower on-state resistance (25Ohm) with improved channel matching (0.2Ohm), while MAX4552ESE+ provides higher resistance (120Ohm) with matching leakage current specifications (1nA). Both are RoHS3 compliant and active products with unlimited MSL ratings.

Secondary Substitutes (Extended Supply Voltage Range):

MAX4512ESE+ and MAX4512ESE+T support higher supply voltages (9V ~ 36V) and extended dual supply ranges (±4.5V ~ 18V), making them suitable for applications requiring higher voltage operation. These parts maintain the -40°C to 85°C temperature range and 16-SOIC package. The higher on-state resistance (160Ohm) and slower switching times (500ns, 400ns) require verification against application bandwidth requirements.

Alternative Substitutes (Different Electrical Characteristics):

MAX392CSE+ and MAX392CSE+T provide 35Ohm on-state resistance with superior channel matching (0.3Ohm) and lower leakage current (100pA). However, the operating temperature range is limited to 0°C ~ 70°C, restricting use in extended temperature applications. These parts are suitable for room-temperature and controlled-environment designs.

ALD4202MSCL (Advanced Linear Devices) offers 135Ohm resistance with -90dB crosstalk at 100kHz, matching the ISL43141IBZ crosstalk specification. Operating temperature range is 0°C ~ 70°C, limiting applicability to non-extended-temperature designs.

DG455EY-T1-E3 (Vishay Siliconix) features the lowest on-state resistance (5.3Ohm) and extended operating temperature to 125°C. However, the required supply voltage range (12V ~ 36V) is incompatible with the ISL43141IBZ's 2.7V minimum, restricting this part to high-voltage applications only.

Compliance and Availability:

All substitute parts are RoHS3 compliant and REACH unaffected. Active product status ensures ongoing availability and manufacturing support. Packaging options include both Tube and Tape & Reel formats to accommodate different procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can MAX4712ESE+ directly replace ISL43141IBZ without circuit modification?

A: MAX4712ESE+ is functionally compatible as a direct replacement within the 16-SOIC package. The lower on-state resistance (25Ohm vs. 65Ohm) reduces signal attenuation and power dissipation, which is beneficial for most applications. Verify that the application does not depend on the higher resistance value for impedance matching or signal conditioning.

Q: What is the key difference between MAX4552ESE+ and MAX4712ESE+?

A: Both parts are pin-compatible 4-circuit SPST-NO switches in 16-SOIC packaging. MAX4552ESE+ provides 120Ohm on-state resistance with 1nA leakage current, closely matching the ISL43141IBZ electrical profile. MAX4712ESE+ offers lower resistance (25Ohm) with faster switching times (125ns, 80ns). Select MAX4552ESE+ for applications requiring minimal electrical deviation from the original part; select MAX4712ESE+ for applications benefiting from lower resistance and faster switching.

Q: Why do MAX4512 variants have different operating temperature ranges?

A: MAX4512ESE+ and MAX4512ESE+T support -40°C to 85°C, matching the ISL43141IBZ extended temperature range. MAX4512CSE+ is rated only to 0°C ~ 70°C. The temperature rating reflects manufacturing process and qualification testing. For applications requiring -40°C operation, use MAX4512ESE+ or MAX4512ESE+T variants only.

Q: Is DG455EY-T1-E3 suitable for low-voltage applications?

A: No. DG455EY-T1-E3 requires minimum 12V supply voltage, incompatible with the ISL43141IBZ's 2.7V minimum. This part is restricted to high-voltage applications (12V ~ 36V). For low-voltage designs, select MAX4712ESE+, MAX4552ESE+, or MAX392CSE+ variants.

Q: What is the impact of on-state resistance variation on circuit performance?

A: On-state resistance directly affects signal attenuation, power dissipation, and output impedance. Lower resistance (DG455EY-T1-E3 at 5.3Ohm, MAX4712ESE+ at 25Ohm) reduces signal loss and heat generation, improving signal fidelity in low-impedance circuits. Higher resistance (MAX4512 at 160Ohm, ALD4202MSCL at 135Ohm) increases attenuation and power dissipation, suitable for high-impedance signal paths. The ISL43141IBZ's 65Ohm resistance represents a mid-range value; substitutes spanning 25Ohm to 160Ohm require application-specific verification.

Q: Can I use Tape & Reel packaged parts (MAX392CSE+T, MAX4512ESE+T) in place of Tube packaged parts?

A: Yes. Tape & Reel and Tube packaging contain identical die and electrical specifications; packaging format affects only procurement, storage, and assembly handling. Both formats are suitable for automated pick-and-place assembly. Verify that your assembly process supports the selected packaging format.

Q: What is the significance of MSL (Moisture Sensitivity Level) ratings?

A: ISL43141IBZ carries MSL 3 (168 hours), requiring controlled storage and handling to prevent moisture absorption. All substitute parts carry MSL 1 (unlimited), eliminating moisture sensitivity concerns and simplifying inventory management. This is a manufacturing advantage of active substitute parts over the obsolete ISL43141IBZ.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for new designs and production.

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