ISL5120CBZ Equivalent & Substitute Parts

Part Overview

The ISL5120CBZ is a 2-circuit SPST-NO IC switch manufactured by Renesas Electronics Corporation, designed for low-impedance analog signal switching applications. This device features a 20Ohm on-state resistance and operates across a 2.7V to 12V single supply range. The ISL5120CBZ is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting current availability and product status requirements.

Key Parameters

Parameter	ISL5120CBZ
Switch Circuit Type	SPST - NO
Number of Circuits	2
Multiplexer/Demultiplexer Circuit	1:1
On-State Resistance (Max)	20Ohm
Channel-to-Channel Matching (ΔRon)	800mOhm
Voltage - Supply, Single (V+)	2.7V ~ 12V
Switch Time (Ton, Toff) (Max)	35ns, 30ns
Charge Injection	5pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF
Current - Leakage (IS(off)) (Max)	100pA
Crosstalk	-105dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the ISL5120CBZ are identified based on the following critical parameters that determine functional compatibility:

Core Compatibility Criteria:

Switch Circuit Type: SPST - NO (maintained across all substitutes)
Number of Circuits: 2 (maintained across all substitutes)
Multiplexer/Demultiplexer Circuit: 1:1 (maintained across all substitutes)
Package / Case: 8-SOIC form factor (maintained across all substitutes)
Channel-to-Channel Matching (ΔRon): 800mOhm (maintained across all substitutes)
Voltage - Supply, Single (V+): 2.7V ~ 12V (maintained across all substitutes)
Current - Leakage (IS(off)) (Max): 100pA (maintained across all substitutes)
RoHS Status: ROHS3 Compliant (maintained across all substitutes)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (maintained across all substitutes)

Substitute Part Family: All four substitute parts are variants of the MAX4541 series manufactured by Analog Devices Inc./Maxim Integrated. These parts differ only in packaging format (Tube, Tape & Reel, or Cut Tape & Digi-Reel) and operating temperature range. The MAX4541 series maintains identical electrical specifications for switch circuit topology, circuit count, impedance matching, supply voltage range, and leakage characteristics. All MAX4541 variants are classified as Active products, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Parameter	ISL5120CBZ	MAX4541CSA+	MAX4541CSA+T	MAX4541ESA+	MAX4541ESA+T
Manufacturer	Renesas Electronics	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit Type	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	2	2	2	2	2
Multiplexer/Demultiplexer Circuit	1:1	1:1	1:1	1:1	1:1
On-State Resistance (Max)	20Ohm	60Ohm	60Ohm	60Ohm	60Ohm
Channel-to-Channel Matching (ΔRon)	800mOhm	800mOhm	800mOhm	800mOhm	800mOhm
Voltage - Supply, Single (V+)	2.7V ~ 12V	2.7V ~ 12V	2.7V ~ 12V	2.7V ~ 12V	2.7V ~ 12V
Switch Time (Ton, Toff) (Max)	35ns, 30ns	100ns, 75ns	100ns, 75ns	100ns, 75ns	100ns, 75ns
Charge Injection	5pC	1pC	1pC	1pC	1pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF	8pF, 8pF	8pF, 8pF	8pF, 8pF	8pF, 8pF
Current - Leakage (IS(off)) (Max)	100pA	100pA	100pA	100pA	100pA
Crosstalk	-105dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°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)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Packaging Format	-	Tube	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Product Status Consideration: The ISL5120CBZ is classified as obsolete. All four substitute parts from the MAX4541 series are classified as Active, ensuring continued manufacturing support, supply chain availability, and long-term component sourcing for production and maintenance applications.

Compliance and Certification: All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original ISL5120CBZ specifications. This ensures compatibility with environmental and regulatory requirements across manufacturing and deployment environments.

Packaging Format Selection:

MAX4541CSA+ (Tube packaging): Standard tube format for manual assembly and small-quantity applications
MAX4541CSA+T (Tape & Reel): Automated assembly format for high-volume production
MAX4541ESA+ (Tube packaging): Extended temperature range variant in tube format
MAX4541ESA+T (Cut Tape & Digi-Reel): Extended temperature range variant in automated assembly format

Temperature Range Consideration: The ISL5120CBZ operates across 0°C to 70°C. The MAX4541CSA+ and MAX4541CSA+T variants maintain this identical temperature range. The MAX4541ESA+ and MAX4541ESA+T variants extend the operating range to -40°C to 85°C, providing broader environmental coverage for applications requiring extended temperature performance.

Frequently Asked Questions (FAQ)

Q: What are the key differences between the ISL5120CBZ and MAX4541 substitutes?

A: The primary differences are on-state resistance (ISL5120CBZ: 20Ohm vs. MAX4541: 60Ohm), switch timing (ISL5120CBZ: 35ns/30ns vs. MAX4541: 100ns/75ns), charge injection (ISL5120CBZ: 5pC vs. MAX4541: 1pC), and crosstalk performance (ISL5120CBZ: -105dB vs. MAX4541: -90dB @ 1MHz). All other electrical and mechanical parameters remain equivalent. The ISL5120CBZ is obsolete while all MAX4541 variants are active products.

Q: Can I use MAX4541 parts as direct replacements in existing ISL5120CBZ designs?

A: The MAX4541 series maintains identical switch circuit topology, circuit count, supply voltage range, leakage characteristics, and 8-SOIC package form factor. However, the higher on-state resistance and slower switch timing of the MAX4541 must be evaluated against application-specific performance requirements. Pin-to-pin compatibility is maintained.

Q: What is the difference between MAX4541CSA+ and MAX4541ESA+ variants?

A: Both variants are functionally identical in electrical performance. The primary difference is operating temperature range: MAX4541CSA+ operates 0°C to 70°C, while MAX4541ESA+ operates -40°C to 85°C. Select MAX4541ESA+ for applications requiring extended temperature performance.

Q: How do packaging formats differ among the MAX4541 substitutes?

A: MAX4541CSA+ and MAX4541ESA+ are supplied in Tube packaging, suitable for manual assembly and small-quantity orders. MAX4541CSA+T and MAX4541ESA+T are supplied in Tape & Reel or Cut Tape & Digi-Reel formats, optimized for automated assembly and high-volume production. Electrical specifications are identical across all packaging formats.

Q: Are all substitute parts RoHS compliant?

A: Yes. All MAX4541 substitute variants maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original ISL5120CBZ specifications.

Q: Which MAX4541 variant should I select for new designs?

A: For new designs requiring standard temperature operation (0°C to 70°C), select MAX4541CSA+ (Tube) or MAX4541CSA+T (Tape & Reel) based on assembly method. For applications requiring extended temperature performance (-40°C to 85°C), select MAX4541ESA+ (Tube) or MAX4541ESA+T (Tape & Reel) based on assembly method. All variants are active products with assured long-term availability.

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