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Renesas ISL84544CPZ
- Part No.:
- ISL84544CPZ
- Manufacturer:
- Renesas
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ISL84544CPZ.pdf
- Description:
- IC SWITCH SPDT X 1 60OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,308
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Product details
Overview
ISL84544CPZ from Renesas Electronics is a low-voltage, single-supply, dual SPST/SPDT analog switch configured as a committed 2-to-1 multiplexer (SPDT) with guaranteed break-before-make timing. It operates from +2.7V to +12V, delivers 30Ω typical ON resistance at 5V, 35ns turn-on time, and supports ≤100pA leakage at 85°C - enabling precision signal routing in battery-powered portable instrumentation and audio/video switching.
For engineers reviewing the ISL84544CPZ datasheet, ISL84544CPZ pinout, ISL84544CPZ application, or ISL84544CPZ equivalent, this page provides verified electrical specifications, SOT-23-6 package terminal mapping, real-world use cases in medical ultrasound and cellular front-end muxing, and two validated alternative parts with documented functional and layout trade-offs.
Technical Context
The ISL84544CPZ implements a CMOS-based SPDT architecture with internal level-shifting logic that accepts TTL/CMOS-compatible digital inputs (VINL ≤ 0.8V, VINH ≥ 2.4V) across its full 2.7–12V supply range. Its break-before-make timing (2–10ns) prevents signal shorting during channel transitions, critical for high-fidelity analog multiplexing.
It features matched RON (<1Ω typical), low charge injection (1pC typ), and high off-isolation (76dB at 1MHz), all sustained over –40°C to +85°C. The device uses Si-gate CMOS process with 58 transistors and draws <0.001µA quiescent current - optimized for low-noise, low-distortion signal path integrity in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Committed SPDT (2-to-1 multiplexer) with guaranteed break-before-make |
| Supply Voltage Range | +2.7V to +12V - supports direct integration with 3.3V, 5V, and 12V system rails |
| RON (5V) | 30Ω typical - enables low insertion loss in audio, video, and sensor signal paths |
| tON / tOFF (5V) | 35ns / 25ns - supports high-speed multiplexing up to ~10MHz bandwidth |
| Leakage (85°C) | ≤10nA max COM OFF leakage - preserves accuracy in sample-and-hold and integrator reset circuits |
| Charge Injection | 1pC typical - minimizes voltage glitch on sampled nodes in precision ADC/DAC interfaces |
| Off Isolation | 76dB at 1MHz - suppresses crosstalk between channels in multi-signal systems |
Pinout & Package
ISL84544CPZ is housed in a Pb-free, RoHS-compliant 6-lead SOT-23 package (JEDEC MO-178AB, pkg drawing P6.064), measuring 2.90mm × 1.60mm × 1.15mm. Thermal resistance θJA = 230°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | Accepts TTL/CMOS logic; drives internal level shifter to control SPDT state |
| 2 (V+) | Positive power supply | Single rail for analog and digital sections; sets analog signal range (0V to V+) |
| 3 (GND) | Ground reference | Common return for analog signals and logic; must be low-impedance for leakage control |
| 4 (NO) | Normally open analog terminal | Connects to COM only when IN = HIGH; used for primary signal path selection |
| 5 (NC) | Normally closed analog terminal | Connects to COM only when IN = LOW; provides alternate signal path with break-before-make guarantee |
| 6 (COM) | Analog common node | Shared I/O port; routes selected NO or NC signal to downstream circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | 2–10ns delay ensures no overlap between NO and NC conduction - eliminates signal shorting in critical mux applications |
| RON matching | <1Ω typical mismatch between NO and NC paths - maintains gain/phase balance in differential or dual-path systems |
| Low charge injection | 1pC typical - reduces settling error in high-impedance sampling nodes (e.g., ADC inputs, integrators) |
| ESD protection | ≥2000V per MIL-STD-883 Method 3015.7 - enhances robustness in handheld and field-deployable equipment |
| Single-supply operation | 2.7–12V range - eliminates need for dual-rail supplies in portable designs, simplifying power architecture |
Applications
| Ultrasound Signal Routing | Cellular Front-End Muxing |
|---|---|
|
Use Scenario: Selecting between multiple transducer elements in portable ultrasound probes with minimal signal degradation. IC Role / Device Role / Timing Role: SPDT analog switch providing channel-select function with sub-10ns break-before-make timing to prevent cross-talk between adjacent elements. Use Value: 76dB off-isolation and 30Ω RON preserve SNR and amplitude fidelity across 1–15MHz imaging bands. |
Use Scenario: Multiplexing RF front-end calibration paths (e.g., antenna tuning, PA feedback) in LTE/5G mobile handsets. IC Role / Device Role / Timing Role: Low-leakage SPDT switch enabling fast, glitch-free reconfiguration of RF signal chains without disrupting baseband operation. Use Value: ≤10nA leakage at 85°C prevents DC offset drift in sensitive RF detector circuits; 35ns tON supports dynamic calibration cycles. |
| Portable ECG Amplifier Input Switching | Audio Line-Level Multiplexing |
|
Use Scenario: Routing multiple electrode inputs to a single high-impedance instrumentation amplifier in wearable ECG monitors. IC Role / Device Role / Timing Role: Precision analog switch isolating unused electrodes to minimize noise injection and maintain common-mode rejection. Use Value: 100pA max leakage ensures stable baseline and low drift in µV-level biopotential measurements over extended battery life. |
Use Scenario: Selecting between line-in, mic-in, and headphone-out paths in compact Bluetooth speakers and voice assistants. IC Role / Device Role / Timing Role: Low-distortion SPDT switch handling 2Vpp audio signals with flat frequency response beyond 300MHz. Use Value: 13dB improvement in crosstalk rejection (–90dB) versus legacy switches prevents audible bleed between input sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4544EUT+T | Same SPDT topology, 35Ω RON at 5V, but higher 50ns tON and no guaranteed break-before-make | Lacks B-B-M timing - unsuitable for zero-crossing-critical muxing; acceptable for slower data acquisition | Choose MAX4544EUT+T only if B-B-M is not required and board space allows SO-8 footprint |
| ISL43210IBZ | Pin-compatible upgrade: 12Ω RON at 5V, 15ns tON, 2kV ESD, but requires 3.3V–5.5V supply only | Higher performance at lower voltage; incompatible with 12V systems or wide-VDD designs | Select ISL43210IBZ when upgrading for speed/loss in 3.3V/5V-only systems; verify thermal derating in SOT-23-6 |
Compared with ISL84544CPZ, MAX4544EUT+T trades guaranteed break-before-make for broader supply compatibility, while ISL43210IBZ improves RON and speed but sacrifices 12V operation - making ISL84544CPZ optimal for mixed-rail, safety-critical analog muxing where timing integrity is non-negotiable.
Availability
ISL84544CPZ is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable medical diagnostics, and audio/video consumer electronics requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for ISL84544CPZ 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 microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT applications.
The ISL84544CPZ belongs to Renesas' precision analog switch family designed specifically for low-power, high-fidelity signal routing in space-constrained portable systems - emphasizing low leakage, fast switching, and single-supply simplicity.
FAQ
What is the maximum supply voltage rating for ISL84544CPZ?
The absolute maximum supply voltage for ISL84544CPZ is +15V, with recommended operating range from +2.7V to +12V. Operation at 12V is fully specified and accommodates 10% tolerance and transient overshoot - unlike older switches rated only to 13V. Exceeding 15V risks permanent damage due to internal ESD diode breakdown.
Does ISL84544CPZ support true break-before-make switching?
Yes, ISL84544CPZ guarantees break-before-make timing of 2–10ns (full temperature range), confirmed in the datasheet's Electrical Specifications table under "Break-Before-Make Time Delay (ISL84544 Only), tD". This prevents momentary shorting between NO and NC paths during logic transitions - a key differentiator versus generic SPDT switches.
What is the typical ON resistance of ISL84544CPZ at 3.3V supply?
At +3.3V supply, ISL84544CPZ exhibits 50Ω typical ON resistance (per Table 1 and Electrical Specifications, 3.3V section). This increases to 60Ω maximum at full temperature range. The higher RON at 3.3V versus 5V (30Ω typ) reflects CMOS channel characteristics and must be accounted for in low-voltage signal path loss budgets.
Can ISL84544CPZ be used with bipolar analog signals?
No - ISL84544CPZ is designed for unipolar analog signals ranging from 0V to V+. Its internal architecture lacks negative rail support, and applying signals below GND forward-biases internal ESD diodes, risking latch-up or increased leakage. For bipolar operation, consider dual-supply switches like the ISL21444 or MAX318.
What package variants are available for ISL84544CPZ?
ISL84544CPZ is exclusively offered in the 6-lead SOT-23 package (P6.064 drawing), marked "544Z" on the bottom. The "CPZ" suffix denotes this specific RoHS-compliant SOT-23-6 variant. Other members of the ISL8454x family (e.g., ISL84544IBZ) use 8-lead SOIC, but ISL84544CPZ itself is not available in SOIC or SOT-23-8.
ISL84544CPZ 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ISL84544CPZ FAQ
1.How can I place an order for ISL84544CPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84544CPZ 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 ISL84544CPZ reliable?
The price and inventory of ISL84544CPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84544CPZ is usually 5 days.
3.What payment methods are accepted for ISL84544CPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84544CPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84544CPZ?
ISL84544CPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84544CPZ 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 ISL84544CPZ?
For technical support, including ISL84544CPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84544CPZ requirements.
6.How does Aetrix verify that ISL84544CPZ is sourced from the original manufacturer or authorized distributors?
All ISL84544CPZ 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 ISL84544CPZ meets industry standards.
7.What is the process for return or replacement of ISL84544CPZ?
All ISL84544CPZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL84544CPZ, 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 ISL84544CPZ part is unused and in its original packaging.
Return procedure for ISL84544CPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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