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Renesas ISL88013IH531Z-TK
- Part No.:
- ISL88013IH531Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88013IH531Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,466
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Product details
Overview
ISL88013IH531Z-TK from Renesas (formerly Intersil) is a 5-lead SOT-23 voltage supervisor IC with fixed 3.09V VDD monitoring, watchdog timer, active-low/manual-reset input (RST/MR), active-high reset output (RST), and supply supervision down to 1V. It delivers ±1.5% threshold accuracy, 5.5µA quiescent current, and supports critical µP power sequencing in embedded control systems.
For engineers reviewing the ISL88013IH531Z-TK datasheet, ISL88013IH531Z-TK pinout, ISL88013IH531Z-TK application, or ISL88013IH531Z-TK equivalent, key selection criteria include its 3.09V fixed VDD trip point, 1.6s normal / 51s startup watchdog timeout, dual reset outputs, manual reset capability, and operation across –40°C to +85°C.
Technical Context
The ISL88013IH531Z-TK integrates a precision bandgap reference, comparator-based voltage detection, and a digital watchdog timer with two distinct timeout modes: a 51s startup window (to accommodate OS/FPGA initialization) and a 1.6s nominal timeout for runtime fault detection. Its reset assertion logic responds to VDD falling below 3.09V (±1.5%), MR pull-down, or WDI timeout.
It features complementary push-pull RST and open-drain RST/MR outputs, enabling direct interface with both active-high and active-low reset domains. The device asserts valid reset signals even as VDD drops to 1V, ensuring robust brownout protection during power collapse.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 3.09V ±1.5% - factory-trimmed trip point for reliable 3.3V rail monitoring with hysteresis (31mV) |
| Supply Current | 7µA (typ) at 3.3V - enables ultra-low-power operation in battery-backed or energy-constrained systems |
| Watchdog Timeout | 1.6s (normal), 51s (startup) - prevents premature reset during boot while ensuring runtime lockup detection |
| Reset Output Drive | RST: push-pull high/low; RST/MR: open-drain low - supports mixed-voltage reset signaling without external pull-ups |
| Operating Range | –40°C to +85°C, VDD = 2.0V to 5.5V - qualified for industrial temperature and wide-input-supply applications |
| Reset Validity | Down to VDD = 1V - guarantees reset assertion integrity during deep brownout or power-fail conditions |
| Input Leakage | <100nA on VMON/WDI - minimizes loading on sensitive analog or microcontroller I/O nodes |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74 compatible; dimensions 2.9mm × 1.6mm × 1.1mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined active-low reset output & manual reset input | Open-drain output asserted LOW during reset; debounced active-low input accepts push-button or MCU signal |
| 2 - GND | Ground reference | Primary return path for internal comparators, oscillator, and output drivers |
| 3 - RST | Active-high reset output | Push-pull output driven HIGH during reset; directly interfaces with µP / FPGA / ASIC reset inputs requiring active-high assertion |
| 4 - VDD | Power supply and monitored voltage input | Supplies internal circuitry and serves as primary monitored rail (3.09V threshold); operates from 2.0V–5.5V |
| 5 - WDI | Watchdog timer input | Edge-sensitive input (rising/falling) that clears 1.6s timer; requires toggling within timeout to prevent reset assertion |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.09V VDD monitoring | Factory-trimmed threshold eliminates external resistor network, reducing BOM count and layout area |
| Dual reset outputs (RST, RST/MR) | Simultaneous active-high and active-low assertion enables compatibility with diverse host processor reset architectures |
| 51s startup + 1.6s runtime watchdog | Two-phase timeout prevents false resets during boot while maintaining strict runtime fault coverage |
| Manual reset input with debounce | Integrated 1µs minimum pulse width filtering allows direct connection to mechanical push-buttons without external RC |
| 1V minimum operating voltage | Ensures reset remains asserted through full power collapse, supporting fail-safe shutdown in safety-critical systems |
| ±1.5% threshold accuracy over temp | Guarantees precise trip point across industrial temperature range without calibration or trimming |
Applications
| Industrial PLC Controller | Medical Diagnostic Handheld |
|---|---|
|
Use Scenario: Monitors 3.3V main logic rail and provides system-wide reset during brownout or firmware hang. IC Role / Device Role / Timing Role: Voltage supervisor and watchdog timer asserting active-high RST to ARM Cortex-M4 and active-low RST/MR to FPGA configuration controller. Use Value: Prevents corrupted memory writes and invalid state transitions by holding processors in reset until 3.3V stabilizes above 3.09V and WDI is serviced. |
Use Scenario: Ensures safe power-up sequence and runtime integrity of battery-powered ultrasound processing unit. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors VDD for 3.3V rail stability and watches WDI from DSP core to detect software lockup. Use Value: Enables guaranteed cold-start reliability and automatic recovery from frozen firmware-critical for FDA-compliant medical devices. |
| Smart Energy Meter | Automotive Body Control Module (BCM) |
|
Use Scenario: Supervises isolated 3.3V supply powering metrology SoC and communication interface under fluctuating mains conditions. IC Role / Device Role / Timing Role: Primary power-on reset generator and brownout detector; RST/MR tied to tamper-detection switch. Use Value: Maintains meter accuracy and data integrity by preventing operation during undervoltage events and enabling field-service manual reset. |
Use Scenario: Provides fail-safe reset for microcontroller managing door locks, lighting, and CAN transceivers in 12V vehicle electrical system. IC Role / Device Role / Timing Role: Monitors regulated 3.3V domain and feeds WDI from BCM MCU; RST drives reset input of LIN transceiver. Use Value: Guarantees deterministic restart after load-dump transients and detects MCU freeze before CAN bus error propagation occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88011IH531Z-TK | No watchdog timer; identical 3.09V VDD threshold, dual reset outputs, and SOT-23 package | Suitable where only power-on reset and voltage monitoring are required-no runtime fault detection needed | Select when watchdog functionality is unnecessary and lowest BOM cost is prioritized |
| MAX6326UT31D3+T | 3.08V threshold (±2.5%), no WDI pin, 1.25µA supply current, same SOT-23-5 package | Lacks watchdog and manual reset; optimized for ultra-low-power, single-rail monitoring only | Choose for battery-life-critical applications where watchdog and MR are omitted |
Compared with ISL88013IH531Z-TK, ISL88011IH531Z-TK removes watchdog capability but retains identical voltage monitoring and reset architecture, while MAX6326UT31D3+T trades accuracy and feature set for sub-µA quiescent current-making each suitable for distinct system-level trade-offs.
Availability
ISL88013IH531Z-TK is available at Aetrix Electronics and suitable for industrial PLC controllers, medical handheld diagnostics, smart energy meters, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL88013IH531Z-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 semiconductor leader delivering trusted embedded solutions, including high-precision analog and power management ICs for industrial, automotive, and infrastructure markets.
The ISL88013IH531Z-TK belongs to Renesas' legacy Intersil voltage supervisor family, engineered specifically for reliable power-on reset, brownout protection, and watchdog-based system recovery in space-constrained embedded systems.
FAQ
What is the exact VDD reset threshold voltage for ISL88013IH531Z-TK?
The ISL88013IH531Z-TK has a factory-programmed VDD threshold of 3.09V with ±1.5% accuracy over temperature (–40°C to +85°C). This value is confirmed in the Electrical Specifications table on page 6 of FN8093 Rev 5.00, where VTHVDD for IH531 variants is specified as 3.04V (min), 3.09V (typ), and 3.14V (max).
Does ISL88013IH531Z-TK support manual reset, and how is it implemented?
Yes, ISL88013IH531Z-TK supports manual reset via the RST/MR pin (Pin 1), which functions as both an active-low reset output and a debounced manual reset input. A logic-low pulse ≥1µs applied to this pin asserts reset for the full POR timeout period (200ms), and the device accepts direct push-button connection to ground without external components.
What are the watchdog timer timeout durations for ISL88013IH531Z-TK?
The ISL88013IH531Z-TK features two watchdog timeout modes: a 51s startup timeout (to allow OS/FPGA initialization) and a 1.6s nominal runtime timeout. These values are explicitly documented in the Electrical Specifications table (page 7, Note 8) and functional block diagram (page 4) of the FN8093 datasheet.
Can ISL88013IH531Z-TK monitor a second voltage rail besides VDD?
No. Unlike ISL88012/ISL88014/ISL88015, the ISL88013IH531Z-TK does not include a VMON pin and therefore monitors only the VDD supply. Its pinout (Page 2, top view) shows WDI on Pin 5-not VMON-and the Product Features Table (Page 5) confirms ISL88013 supports Watchdog Timer and Fixed Trip Point Voltage, but not Adjustable Trip Point Voltage.
What is the minimum supply voltage at which ISL88013IH531Z-TK guarantees valid reset assertion?
The ISL88013IH531Z-TK guarantees reset signal validity down to VDD = 1V, as stated in the Features list (page 1) and confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions (page 6). This ensures robust brownout response even during severe supply collapse.
ISL88013IH531Z-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:
- 3.09V
- 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
ISL88013IH531Z-TK FAQ
1.How can I place an order for ISL88013IH531Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88013IH531Z-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 ISL88013IH531Z-TK reliable?
The price and inventory of ISL88013IH531Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88013IH531Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88013IH531Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88013IH531Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88013IH531Z-TK?
ISL88013IH531Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88013IH531Z-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 ISL88013IH531Z-TK?
For technical support, including ISL88013IH531Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88013IH531Z-TK requirements.
6.How does Aetrix verify that ISL88013IH531Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88013IH531Z-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 ISL88013IH531Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88013IH531Z-TK?
All ISL88013IH531Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88013IH531Z-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 ISL88013IH531Z-TK part is unused and in its original packaging.
Return procedure for ISL88013IH531Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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