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Renesas ISL88013IH544Z-TK
- Part No.:
- ISL88013IH544Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88013IH544Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL88013IH544Z-TK from Renesas Electronics (formerly Intersil) is a 5-lead SOT-23 voltage supervisor IC with fixed VDD monitoring, watchdog timer, manual reset, and complementary active-low/high reset outputs. It features a 4.38V ±1.5% VDD trip threshold, 1.6s normal and 51s start-up watchdog timeout, ultra-low 5.5µA supply current, and operates from -40°C to +85°C - used for reliable power-on reset and brownout protection in microcontroller-based embedded systems.
For engineers reviewing the ISL88013IH544Z-TK datasheet, ISL88013IH544Z-TK pinout, ISL88013IH544Z-TK application, or ISL88013IH544Z-TK equivalent, key selection criteria include its fixed 4.38V VDD supervision threshold, integrated watchdog with dual timeout modes, complementary RST/RST outputs, 5.5µA quiescent current, and compatibility with 2.0–5.5V supply rails in space-constrained industrial and portable designs.
Technical Context
The ISL88013IH544Z-TK implements a precision bandgap-based voltage comparator for VDD supervision with ±1.5% threshold accuracy over temperature and 44mV hysteresis at 4.38V. Its watchdog timer uses an internal oscillator to enforce system-level software liveness checks, with independent 51s start-up and 1.6s normal timeout periods triggered by WDI edge transitions.
Reset assertion is synchronized to VDD stabilization via Power-On Reset logic, with reset deassertion delayed by a fixed 200ms tPOR after VDD exceeds 4.38V. The device supports manual reset via debounced RST/MR input and delivers push-pull RST and open-drain RST outputs simultaneously for flexible interface to diverse host logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Trip Threshold | 4.38V ±1.5% - factory-programmed fixed threshold for +3.3V or +5V rail monitoring with guaranteed accuracy across -40°C to +85°C. |
| Watchdog Timeout | 1.6s normal / 51s start-up - prevents premature reset during boot while enforcing runtime software responsiveness. |
| Supply Current | 5.5µA typical at 5V - enables use in battery-powered systems without measurable impact on standby life. |
| Reset Output Types | Complementary RST (push-pull high) and RST (open-drain low) - supports direct interfacing to both CMOS and TTL inputs without external pull-ups. |
| Operating Voltage Range | 2.0V to 5.5V - ensures valid reset operation even during deep brownout conditions down to 1V VDD. |
| Reset Pulse Width | 200ms minimum - provides sufficient hold time for microcontroller initialization, FPGA configuration, and oscillator stabilization. |
| Manual Reset Input | Active-low, debounced, <100mV threshold - allows robust push-button or controller-driven reset initiation with 1µs minimum pulse width. |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS-compliant, JEDEC MO-178AA, 1.6mm × 2.9mm footprint).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined reset output & manual reset input | Open-drain active-low reset output; also accepts debounced active-low manual reset signal (e.g., push-button to GND). |
| 2 - GND | Ground reference | System ground return for all internal comparators, oscillator, and output drivers. |
| 3 - RST | Active-high push-pull reset output | CMOS-compatible high/low output that asserts HIGH during reset; requires no external pull-up. |
| 4 - VDD | Power supply and monitored voltage input | Supplies internal circuitry and serves as primary monitored rail; compared against 4.38V threshold. |
| 5 - WDI | Watchdog timer input | Edge-sensitive input (rising/falling) that resets internal 1.6s/51s watchdog timer; must be toggled within timeout period. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode watchdog timer | 51s start-up timeout prevents false triggers during boot; 1.6s runtime timeout enforces firmware liveness without requiring dedicated timer peripherals. |
| Complementary reset outputs | RST (push-pull) and RST (open-drain) enable simultaneous connection to mixed-logic systems - e.g., RST to MCU reset pin, RST to LED indicator or power sequencer. |
| Ultra-low quiescent current | 5.5µA max ensures negligible battery drain in always-on monitoring applications such as portable medical devices or remote sensors. |
| Immunity to supply transients | Internal hysteresis (44mV at 4.38V) and noise-filtered comparators prevent chattering during power rail ripple or ESD events. |
| Valid reset down to 1V VDD | Guarantees functional reset assertion even during severe brownout, enabling safe shutdown before logic corruption occurs. |
Applications
| Industrial PLC I/O Module | Medical Infusion Pump Controller |
|---|---|
Use Scenario: Monitors main 3.3V logic rail and detects brownout or software lockup in real-time control loop. IC Role / Device Role / Timing Role: Voltage supervisor and watchdog timer ensuring deterministic reset behavior during power instability or firmware hang. Use Value: Prevents unsafe actuator movement by forcing controlled reset when VDD drops below 4.38V or WDI stops toggling - meeting IEC 62304 Class B requirements. |
Use Scenario: Supervises 5V microcontroller supply and validates firmware execution integrity in battery-operated infusion delivery system. IC Role / Device Role / Timing Role: Dual-function supervisor providing POR, VDD monitoring, and 1.6s watchdog timeout aligned with motor control task cycle. Use Value: Enables fail-safe shutdown before erroneous dose delivery; 5.5µA current extends single-battery life beyond 12 months in standby mode. |
| Automotive Body Control Module | Handheld Test Instrument |
Use Scenario: Ensures reliable startup and runtime supervision of 5V MCU supply in vehicle door module exposed to load-dump transients. IC Role / Device Role / Timing Role: Fixed-threshold supervisor with ±1.5% accuracy and transient-immune design for automotive-grade power monitoring. Use Value: Maintains reset assertion during 12V system dips to 6V; complementary RST/RST outputs interface directly to MCU and CAN transceiver enable pins. |
Use Scenario: Provides power-on reset and software watchdog for ARM Cortex-M based portable oscilloscope with rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Low-power supervisor enabling clean boot and periodic firmware health check without burdening CPU resources. Use Value: Eliminates need for discrete RC reset + external watchdog IC, reducing BOM count by two components and saving 3.5mm² PCB area in 5-lead SOT-23 package. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor and watchdog timer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US43D3+ | Fixed 4.3V reset threshold; no watchdog timer; only active-low reset output; 1.6µA supply current. | Lacks watchdog functionality - suitable only where software liveness monitoring is handled externally or not required. | Select when lowest possible current (<2µA) is critical and watchdog capability is unnecessary. |
| TPS3808G33DBVR | Adjustable reset threshold (0.4–5V); no watchdog; active-low only; 16µA supply current; 200ms fixed POR delay. | Requires external resistor divider for threshold setting; lacks complementary outputs and watchdog - demands additional discrete logic for RST inversion. | Choose when custom voltage monitoring (e.g., 3.15V rail) is needed and system already includes separate watchdog circuitry. |
Compared with MAX6326US43D3+ and TPS3808G33DBVR, the ISL88013IH544Z-TK uniquely integrates fixed-accuracy 4.38V supervision, dual-mode watchdog, and complementary reset outputs in a single 5-pin SOT-23 - eliminating external components while delivering higher functional density and deterministic boot timing.
Availability
ISL88013IH544Z-TK is available at Aetrix Electronics and suitable for industrial PLCs, portable medical devices, and automotive body electronics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL88013IH544Z-TK 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 Corporation is a global leader in microcontrollers, analog, power management, and connectivity solutions, formed through the integration of Intersil, IDT, and Renesas' legacy businesses.
The ISL88013IH544Z-TK belongs to Renesas' legacy Intersil voltage supervisor family, designed specifically for high-accuracy, low-power power-on reset and system-level watchdog functionality in space-constrained embedded applications.
FAQ
What is the exact VDD reset threshold voltage for ISL88013IH544Z-TK?
The ISL88013IH544Z-TK has a factory-programmed fixed VDD trip threshold of 4.38V, with ±1.5% accuracy over the full -40°C to +85°C operating temperature range. This value is confirmed in the Ordering Information table (Page 3) and Electrical Specifications (Page 6) of FN8093 Rev 5.00, and applies specifically to the ISL88013IH544Z-TK variant.
Does ISL88013IH544Z-TK support adjustable voltage monitoring on the VMON pin?
No, the ISL88013IH544Z-TK does not support adjustable voltage monitoring. Unlike ISL88012/ISL88014/ISL88015 variants, the ISL88013 uses Pin 5 as WDI (Watchdog Input), not VMON. Its supervision is fixed to the VDD rail only - confirmed by the Pinouts diagram (Page 2) and Product Features Table (Page 5) in FN8093 Rev 5.00.
What are the watchdog timeout durations supported by ISL88013IH544Z-TK?
The ISL88013IH544Z-TK supports two distinct watchdog timeout durations: a 51s start-up timeout (to allow OS/FPGA initialization) and a 1.6s nominal normal-mode timeout (to enforce runtime software responsiveness). These values are specified in the Electrical Specifications table (Page 7, Note 8) and Principles of Operation section (Page 10) of FN8093 Rev 5.00.
Can ISL88013IH544Z-TK generate a valid reset signal when VDD drops below 2.0V?
Yes - the ISL88013IH544Z-TK guarantees valid reset assertion down to VDD = 1V, per the Absolute Maximum Ratings and Recommended Operating Conditions (Page 6). Its internal circuitry remains functional and produces correct RST/RST states even during deep brownout, enabling safe system shutdown before logic corruption.
What is the function of Pin 1 (RST/MR) on ISL88013IH544Z-TK?
Pin 1 serves a dual role: it functions as an active-low open-drain reset output (RST) and as a debounced manual reset input (MR). When asserted, it pulls low to signal reset; when driven low externally (e.g., by a push-button), it initiates a system reset. This dual functionality is documented in the Pin Descriptions (Page 5) and Principles of Operation (Page 10) of FN8093 Rev 5.00.
ISL88013IH544Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-SOT
ISL88013IH544Z-TK FAQ
1.How can I place an order for ISL88013IH544Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88013IH544Z-TK 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 ISL88013IH544Z-TK reliable?
The price and inventory of ISL88013IH544Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88013IH544Z-TK is usually 5 days.
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Once your ISL88013IH544Z-TK 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 ISL88013IH544Z-TK?
For technical support, including ISL88013IH544Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88013IH544Z-TK requirements.
6.How does Aetrix verify that ISL88013IH544Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88013IH544Z-TK 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 ISL88013IH544Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88013IH544Z-TK?
All ISL88013IH544Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88013IH544Z-TK, 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 ISL88013IH544Z-TK part is unused and in its original packaging.
Return procedure for ISL88013IH544Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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