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Renesas ISL84542CB-T
- Part No.:
- ISL84542CB-T
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL84542CB-T.pdf
- Description:
- IC SWITCH SPST-NCX2 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,514
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Product details
Overview
ISL84542CB-T from Renesas Electronics is a dual single-pole/single-throw (SPST) analog switch configured as two normally open (NO) switches, operating from a single +2.7V to +12V supply. It delivers 30Ω on-resistance at 5V, 35ns turn-on time, 25ns turn-off time, and 5pC max charge injection-enabling high-fidelity signal routing in portable audio multiplexing and battery-powered sensor interface circuits.
For engineers reviewing the ISL84542CB-T datasheet, ISL84542CB-T pinout, ISL84542CB-T application, or ISL84542CB-T equivalent, key selection criteria include guaranteed RON matching (<1Ω), ultra-low leakage (10nA max at 85°C), SOT-23-6 package footprint, and TTL/CMOS-compatible control logic with break-before-make timing only on ISL84544-not applicable to ISL84542CB-T.
Technical Context
The ISL84542CB-T implements CMOS transmission-gate architecture with integrated level shifters, enabling TTL-compatible digital inputs (0.8V/2.4V thresholds) across its full 2.7–12V supply range. Its analog signal path supports rail-to-rail operation (0V to V+), with ESD protection diodes on all pins referenced to V+ and GND.
Unlike the ISL84544 SPDT variant, the ISL84542CB-T provides two independent NO switches without break-before-make functionality. Its performance degrades predictably at lower supplies: RON rises to 50Ω at 3.3V, tON/tOFF increase to 50ns/20ns, and leakage remains stable below 10nA up to 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V single supply - enables direct integration with 3.3V and 5V systems without level translation |
| On-Resistance (RON) | 30Ω max at 5V - ensures minimal signal attenuation and gain error in precision ADC/DAC interfaces |
| RON Matching | <1Ω between channels - critical for matched gain switching networks and differential signal routing |
| Switching Speed | tON = 35ns, tOFF = 25ns - supports high-speed multiplexing up to ~10MHz in 50Ω systems |
| Charge Injection | 5pC max - limits voltage glitch in sample-and-hold and integrator reset circuits |
| Leakage Current | 10nA max at 85°C - preserves accuracy in high-impedance sensor front-ends and battery monitoring |
| ESD Protection | 2000V per MIL-STD-883 Method 3015.7 - enhances robustness in handheld device assembly and field use |
Pinout & Package
ISL84542CB-T is housed in a 6-lead SOT-23 package (JEDEC MO-178AB compliant), with pin 1 marked by a dot or beveled edge. The compact 2.90mm × 1.60mm footprint supports high-density PCB layouts in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital Control Input | TTL/CMOS-compatible logic input controlling switch state; threshold defined at 0.8V (low) / 2.4V (high) |
| 2 (V+) | Positive Supply Rail | Single power input for analog and digital sections; sets analog signal range (0V to V+) |
| 3 (GND) | Ground Reference | Common return for supply and logic; must be established before applying analog signals |
| 4 (NO) | Analog Normally Open Terminal | Open-circuit when IN = low; connects to COM when IN = high - used for signal enable paths |
| 5 (NC) | No Internal Connection | Unbonded pad; no electrical function - must remain unconnected on PCB |
| 6 (COM) | Analog Common Terminal | Shared analog node for both switch paths; carries bidirectional signal current during conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low Power Consumption | <5µW quiescent dissipation - extends battery life in always-on sensor nodes and wearables |
| Rail-to-Rail Analog Range | 0V to V+ signal handling - eliminates external biasing in single-supply op-amp and ADC applications |
| High Off Isolation | 76dB at 1MHz - prevents crosstalk between adjacent channels in multi-signal routing |
| Low Capacitance | 8pF OFF capacitance (NO/NC), 20pF ON capacitance (COM) - preserves bandwidth in RF and audio paths |
| Pb-Free & RoHS Compliant | Matte tin termination, MSL3 rating - supports lead-free reflow and long-term industrial compliance |
Applications
| Portable Audio Multiplexing | Battery Monitoring Interface |
|---|---|
Use Scenario: Routing microphone, headset, and line-in signals in smartphones and wireless earbuds. IC Role / Device Role / Timing Role: Dual SPST switch isolating analog paths under microcontroller GPIO control. Use Value: 30Ω RON and 5pC charge injection minimize THD+N and DC offset in audio band (20Hz–20kHz). | Use Scenario: Selecting between multiple Li-ion cell voltages for fuel gauging in power banks and tablets. IC Role / Device Role / Timing Role: Low-leakage analog switch enabling high-impedance voltage sensing without loading cells. Use Value: 10nA max leakage at 85°C ensures <0.1% measurement error in 1MΩ sense networks. |
| Medical Sensor Front-End | Industrial DAC Output Switching |
Use Scenario: Configuring electrode inputs in portable ECG and pulse oximeter modules. IC Role / Device Role / Timing Role: Precision analog switch routing biopotential signals to instrumentation amplifier inputs. Use Value: 76dB off isolation suppresses 50/60Hz mains interference between differential leads. | Use Scenario: Enabling/disabling multiple DAC outputs driving separate analog actuators in PLC I/O modules. IC Role / Device Role / Timing Role: High-speed SPST switch selecting active DAC channel under FPGA control. Use Value: 35ns tON allows sub-microsecond channel switching for real-time closed-loop response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4541EUT+T | Same 6-pin SOT-23, 35Ω RON at 5V, but higher 10pC charge injection and 20nA leakage at 85°C | Suitable for general-purpose muxing where charge injection sensitivity is relaxed | Prefer ISL84542CB-T for low-glitch sample-and-hold or high-impedance sensor paths |
| ISL43120IBZ-T | Pin-compatible upgrade: 12Ω RON, 15ns tON, but requires 4.5–13.2V supply - not functional below 4.5V | Better for high-speed, low-RON applications powered from ≥4.5V rails | Select ISL84542CB-T when 2.7V operation, ultra-low leakage, or 3.3V compatibility is required |
Compared with MAX4541EUT+T and ISL43120IBZ-T, the ISL84542CB-T uniquely balances sub-30Ω RON, 5pC charge injection, and true 2.7V operation - making it optimal for battery-powered precision analog routing where supply headroom and signal integrity are constrained.
Availability
ISL84542CB-T is available at Aetrix Electronics and suitable for portable medical devices, battery management systems, and industrial data acquisition requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ISL84542CB-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in analog, power, and timing technologies.
The ISL84542CB-T belongs to Renesas' precision analog switch family designed specifically for low-voltage, low-power, high-fidelity signal routing in space- and energy-constrained portable electronics.
FAQ
What is the maximum analog signal voltage range supported by the ISL84542CB-T?
The ISL84542CB-T supports a rail-to-rail analog signal range from 0V to V+, where V+ is the positive supply voltage. With a supply range of +2.7V to +12V, the analog input/output can swing fully within those bounds - for example, 0V to 5V when powered from 5V. Exceeding V+ or going below GND risks forward-biasing internal ESD diodes, so clamping protection is recommended for overvoltage conditions.
Does the ISL84542CB-T support break-before-make switching?
No, the ISL84542CB-T does not implement break-before-make functionality. It is a dual SPST (normally open) switch, meaning each channel operates independently with simple ON/OFF control. Break-before-make timing is specified only for the ISL84544 SPDT variant - not for ISL84542CB-T. Designers requiring BBM must select ISL84544 or add external timing circuitry.
What is the thermal resistance (θJA) of the ISL84542CB-T in its SOT-23-6 package?
The ISL84542CB-T has a typical junction-to-ambient thermal resistance (θJA) of 230°C/W when mounted on a low effective thermal conductivity test board in free air. This value assumes standard JEDEC test conditions; actual θJA will improve with PCB copper area, thermal vias, and airflow. Maximum junction temperature is rated at 150°C, limiting continuous power dissipation to ~217mW at 85°C ambient.
Can the ISL84542CB-T operate reliably from a 3.3V supply?
Yes, the ISL84542CB-T is fully specified and guaranteed at 3.3V operation. At V+ = 3.3V, typical RON is 50Ω (max 80Ω), tON/tOFF are 50ns/20ns, and leakage remains ≤10nA at 85°C. All digital thresholds (0.8V low, 2.4V high) remain compatible with standard 3.3V logic families, making ISL84542CB-T suitable for mixed-voltage 3.3V system designs.
Is the ISL84542CB-T pin-compatible with the MAX323?
No, the ISL84542CB-T is not pin-compatible with the MAX323. While the datasheet notes pin compatibility with MAX323 for the ISL84541/ISL84544 family in SOIC-8, the ISL84542CB-T uses a 6-lead SOT-23 package with different pin count and layout. Its pinout (IN-V+-GND-NO-NC-COM) differs fundamentally from the 8-lead MAX323 SOIC configuration. Direct replacement requires PCB redesign.
ISL84542CB-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 60Ohm
- Channel-to-Channel Matching (ΔRon):
- 800mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 100ns, 75ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL84542CB-T FAQ
1.How can I place an order for ISL84542CB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84542CB-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL84542CB-T reliable?
The price and inventory of ISL84542CB-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84542CB-T is usually 5 days.
3.What payment methods are accepted for ISL84542CB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84542CB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84542CB-T?
ISL84542CB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84542CB-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL84542CB-T?
For technical support, including ISL84542CB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84542CB-T requirements.
6.How does Aetrix verify that ISL84542CB-T is sourced from the original manufacturer or authorized distributors?
All ISL84542CB-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL84542CB-T meets industry standards.
7.What is the process for return or replacement of ISL84542CB-T?
All ISL84542CB-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL84542CB-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL84542CB-T part is unused and in its original packaging.
Return procedure for ISL84542CB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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