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Renesas ISL84544IBZ
- Part No.:
- ISL84544IBZ
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL84544IBZ.pdf
- Description:
- IC SWITCH SPDT X 1 60OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:980
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Product details
Overview
ISL84544IBZ from Renesas Electronics is a low-voltage, single-supply, dual SPST/SPDT analog switch configured as a committed 2-to-1 multiplexer (SPDT), delivering 30Ω on-resistance at 5V, 35ns turn-on time, and guaranteed break-before-make switching. It operates from +2.7V to +12V, supports TTL/CMOS logic, and targets space-constrained portable audio/video routing in battery-powered handheld equipment.
For engineers reviewing the ISL84544IBZ datasheet, ISL84544IBZ pinout, ISL84544IBZ application, or ISL84544IBZ equivalent, key selection criteria include its 6-pin SOT-23 package, 10nA max leakage at 85°C, 20pF COM ON capacitance, 76dB off isolation at 1MHz, and compatibility with +3V/+5V DAC/ADC signal paths requiring low charge injection (≤5pC).
Technical Context
The ISL84544IBZ implements a CMOS-based SPDT architecture with internal level shifters enabling TTL-compatible control (VINH ≥2.4V, VINL ≤0.8V) across its full 2.7V–12V supply range. Its break-before-make timing (2–30ns) prevents signal shorting during channel transitions, critical for high-fidelity analog multiplexing.
Each switch path features matched RON (<1Ω typical matching), low flatness variation (7Ω at 5V), and ESD-hardened I/O (≥2000V per MIL-STD-883 Method 3015.7). The device avoids bipolar supply operation and relies solely on V+ and GND rails to define analog signal limits and drive gate terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Committed SPDT (2-to-1 multiplexer); no dual-SPST configuration - enables deterministic signal routing without external logic. |
| RON @ 5V | 30Ω typical; ensures minimal signal attenuation and gain error in precision +5V ADC/DAC interfaces. |
| tON / tOFF | 35ns / 25ns at 5V; supports high-speed multiplexing in ultrasound and digital filter sampling applications. |
| Charge Injection | ≤5pC maximum; reduces voltage glitch in sample-and-hold and integrator reset circuits. |
| Off Isolation | 76dB at 1MHz; suppresses crosstalk between active and inactive channels in multi-signal systems. |
| Supply Range | +2.7V to +12V single supply; accommodates Li-ion battery discharge profiles and industrial +3.3V/+5V rails. |
| Leakage Current | ≤10nA max at 85°C; preserves accuracy in high-impedance sensor front-ends and medical ECG amplifiers. |
Pinout & Package
ISL84544IBZ is housed in a RoHS-compliant 6-lead SOT-23 package (JEDEC MO-178AB), measuring 2.90mm × 1.60mm × 1.15mm, with gull-wing leads and thermal resistance θJA = 230°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | TTL/CMOS-compatible logic signal; drives internal level shifter to select NO or NC path. |
| 2 (V+) | Positive power supply | Single rail defining analog signal range (0V to V+) and powering internal switches and logic. |
| 3 (GND) | Ground reference | Return path for supply current and reference for all analog and digital signals. |
| 4 (NO) | Normally open analog terminal | Connects to COM only when IN = high; used for primary signal path in 2-to-1 mux topology. |
| 5 (NC) | Normally closed analog terminal | Connects to COM only when IN = low; provides alternate signal path with guaranteed break-before-make. |
| 6 (COM) | Analog common terminal | Shared I/O node; routes selected input (NO or NC) to system output with ≤20pF ON capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | 2–30ns delay prevents momentary shorting between NO and NC paths during switching - essential for fault-tolerant signal routing. |
| Low on-resistance matching | <1Ω typical ΔRON between channels ensures balanced gain and phase response in differential or dual-path systems. |
| High off isolation | 76dB at 1MHz minimizes signal bleed-through in RF front-ends and high-frequency test equipment. |
| Ultra-low leakage | 10nA max at 85°C maintains DC accuracy in medical instrumentation and precision sensor interfaces. |
| Small-footprint packaging | 6-lead SOT-23 (2.9mm × 1.6mm) saves board area in mobile phones, wearables, and portable diagnostics. |
Applications
| Audio Signal Routing | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Selecting between microphone and line-in inputs in Bluetooth headsets or voice-controlled IoT devices. IC Role / Device Role / Timing Role: SPDT analog switch providing low-noise, low-distortion signal path selection with <35ns settling. Use Value: 30Ω RON and ≤5pC charge injection prevent audible pop/click artifacts and preserve SNR in 24-bit audio paths. |
Use Scenario: Multiplexing ECG electrode inputs into a single ADC channel in handheld electrocardiograph units. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential electrode sampling while maintaining DC integrity. Use Value: 10nA max leakage at 85°C avoids baseline drift; 76dB off isolation rejects cross-channel interference. |
| Test Equipment Signal Path | +3V/+5V Data Converter Interface |
|
Use Scenario: Routing calibration signals or DUT outputs in portable ultrasound probe testers. IC Role / Device Role / Timing Role: High-speed SPDT switch supporting >10MHz bandwidth with consistent frequency response across supply voltages. Use Value: Flat 300MHz bandwidth and 20pF COM ON capacitance minimize group delay distortion in pulse-echo systems. |
Use Scenario: Switching reference voltages or sensor inputs into +3.3V or +5V SAR ADCs in industrial data loggers. IC Role / Device Role / Timing Role: Low-RON analog switch interfacing with precision DACs and op-amp gain networks. Use Value: RON flatness ≤7Ω and matching <1Ω ensure monotonicity and reduce integral nonlinearity (INL) errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4544EUK+T | Pin-compatible 6-pin SOT-23 SPDT; RON = 60Ω @ 5V (vs. 30Ω), tON = 40ns, no guaranteed break-before-make. | Higher RON increases insertion loss in audio paths; lack of B-B-M requires external timing control in safety-critical muxing. | Select MAX4544EUK+T only if legacy footprint reuse is mandatory and RON tolerance >30Ω is acceptable. |
| ISL43120IUZ-T | Pin-compatible 8-pin SOIC SPDT; RON = 25Ω @ 5V, tON = 25ns, but larger package (5mm × 4mm) and higher thermal resistance (θJA = 170°C/W). | Superior speed and lower RON benefit high-frequency test gear, but SOIC footprint conflicts with space-constrained portable designs. | Choose ISL43120IUZ-T when performance outweighs size constraints and PCB layout allows SOIC placement. |
Compared with MAX4544EUK+T and ISL43120IUZ-T, the ISL84544IBZ uniquely balances ultra-low RON (30Ω), guaranteed break-before-make, and minimal 6-pin SOT-23 footprint - making it optimal for next-generation portable medical and audio devices where board area and signal fidelity are co-constrained.
Availability
ISL84544IBZ is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable medical instrumentation, and high-speed test equipment requiring stable component supply and long-term lifecycle support.
Supply support for ISL84544IBZ 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 specializing in microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT markets.
The ISL84544IBZ belongs to Renesas' precision analog switch family, engineered for low-power, high-fidelity signal routing in portable and medical electronics where size, leakage, and switching integrity are critical.
FAQ
What is the maximum supply voltage rating for the ISL84544IBZ?
The ISL84544IBZ has an absolute maximum supply voltage of 15V, with recommended operating range from +2.7V to +12V. This 15V rating accommodates 12V supply tolerances, overshoot, and noise spikes while ensuring reliable operation across industrial and portable environments. Exceeding 15V risks permanent damage per the Absolute Maximum Ratings table on page 4 of FN6016 Rev.8.0.
Does the ISL84544IBZ support bipolar supply operation?
No, the ISL84544IBZ does not support bipolar supplies. Its internal architecture requires a single positive rail (V+) referenced to GND to set analog signal limits and power CMOS switches. Attempting bipolar operation shifts logic thresholds negatively and violates the device's design constraints, as explicitly stated in the "Power-Supply Considerations" section on page 9 of FN6016 Rev.8.0.
What is the guaranteed break-before-make time for the ISL84544IBZ?
The ISL84544IBZ guarantees a break-before-make time delay (tD) of 2ns minimum to 30ns maximum under full temperature range (−40°C to +85°C), tested with RL = 300Ω and CL = 35pF. This parameter is exclusive to the ISL84544 variant and ensures no overlap between NO and NC conduction paths during switching - a key differentiator versus the ISL84541 and many competing SPDT switches.
How does the ISL84544IBZ perform at 3.3V supply compared to 5V?
At 3.3V, the ISL84544IBZ exhibits higher RON (50Ω typical vs. 30Ω at 5V), slower tON/tOFF (50ns/20ns vs. 35ns/25ns), and increased RON flatness variation (up to 12Ω). These degradations are documented in Tables on pages 5–6 of FN6016 Rev.8.0 and reflect inherent CMOS switch physics - designers must verify signal integrity margins when operating below 4.5V.
Is the ISL84544IBZ pin-compatible with the ISL84541IBZ?
No, the ISL84544IBZ is not pin-compatible with the ISL84541IBZ. The ISL84544IBZ uses a 6-pin SOT-23 package (IN, V+, GND, NO, NC, COM), while the ISL84541IBZ is offered in 8-pin packages (SOIC or SOT-23) with two independent NO switches (IN1, IN2, NO1, NO2, COM1, COM2, V+, GND). Their pinouts, functions, and channel configurations are fundamentally incompatible.
ISL84544IBZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL84544IBZ FAQ
1.How can I place an order for ISL84544IBZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84544IBZ 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 ISL84544IBZ reliable?
The price and inventory of ISL84544IBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84544IBZ is usually 5 days.
3.What payment methods are accepted for ISL84544IBZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84544IBZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84544IBZ?
ISL84544IBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84544IBZ 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 ISL84544IBZ?
For technical support, including ISL84544IBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84544IBZ requirements.
6.How does Aetrix verify that ISL84544IBZ is sourced from the original manufacturer or authorized distributors?
All ISL84544IBZ 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 ISL84544IBZ meets industry standards.
7.What is the process for return or replacement of ISL84544IBZ?
All ISL84544IBZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL84544IBZ, 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 ISL84544IBZ part is unused and in its original packaging.
Return procedure for ISL84544IBZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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