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Renesas ISL88013IH526Z-T7A
- Part No.:
- ISL88013IH526Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88013IH526Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,684
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Product details
Overview
ISL88013IH526Z-T7A from Renesas (formerly Intersil) is a 5-lead SOT-23 voltage supervisor IC with fixed VDD monitoring at 2.63 V ±1.5%, watchdog timer (1.6 s normal / 51 s start-up timeout), complementary active-low and active-high reset outputs, and manual reset input. It ensures reliable power-on reset and brownout protection in microprocessor-based systems requiring stable supply supervision.
For engineers reviewing the ISL88013IH526Z-T7A datasheet, ISL88013IH526Z-T7A pinout, ISL88013IH526Z-T7A application, or ISL88013IH526Z-T7A equivalent, this page delivers verified specifications, functional context, package details, real-world use cases, and validated alternative options for industrial embedded control, portable equipment, and critical µP power monitoring.
Technical Context
The ISL88013IH526Z-T7A integrates a precision bandgap reference, comparator with hysteresis (26 mV at 2.63 V trip point), and a dual-mode watchdog timer-51 s start-up timeout prevents false resets during boot, while 1.6 s normal timeout detects firmware hangs. Its fixed VDD threshold (2.63 V) is factory-programmed and temperature-stable (±1.5% over –40°C to +85°C).
It features complementary push-pull RST and open-drain RST/MR outputs, enabling direct interface with both active-high and active-low logic domains. Reset assertion remains valid down to VDD = 1 V, and supply current is ultra-low (5.5 µA typical at 3.3 V), supporting battery-powered operation without compromising supervision integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.63 V ±1.5% - factory-trimmed fixed trip point for +2.5 V rail supervision with guaranteed accuracy across temperature. |
| Watchdog Timeout | 1.6 s nominal normal mode / 51 s start-up mode - enables safe OS/FPGA initialization before watchdog enforcement begins. |
| Reset Outputs | Complementary RST (push-pull high) and RST/MR (open-drain low) - supports mixed-signal system interfacing without external level-shifting. |
| Supply Current | 5.5 µA typical at 3.3 V - enables multi-year operation in coin-cell–powered devices without degrading supervision reliability. |
| Reset Validity | Valid down to VDD = 1 V - guarantees reset assertion during deep brownout, preventing undefined µP behavior. |
| Hysteresis | 26 mV at 2.63 V trip - suppresses noise-induced chatter on noisy power rails without requiring external RC filtering. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded applications including process control and instrumentation. |
Pinout & Package
ISL88013IH526Z-T7A uses a Pb-free 5-lead SOT-23 package (JEDEC MO-178AA, Intersil P5.064), measuring 2.9 mm × 1.6 mm × 1.1 mm, with gull-wing leads and 0.95 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Active-low reset output / manual reset input | Open-drain output asserted LOW during reset; debounced active-low input accepts push-button or controller signal (≤100 mV, ≥1 µs pulse). |
| 2 - GND | Ground reference | Primary return path for internal comparators, watchdog oscillator, and reset drivers; must be low-impedance for noise immunity. |
| 3 - RST | Active-high reset output | Push-pull output driven HIGH during reset; sinks/source up to 0.5 mA/0.4 mA; compatible with TTL/CMOS inputs directly. |
| 4 - VDD | Supply voltage and monitored input | Power input (2.0–5.5 V) and primary supervision node; internally compared against 2.63 V threshold with 26 mV hysteresis. |
| 5 - WDI | Watchdog timer input | Edge-sensitive input (rising/falling); toggling within 1.6 s clears watchdog; no toggle → RST asserts after timeout. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.63 V VDD supervision | Factory-trimmed threshold eliminates external resistor network, reducing BOM count and layout area in +2.5 V system designs. |
| Dual-mode watchdog timer | 51 s start-up window avoids premature reset during boot; 1.6 s runtime timeout provides deterministic firmware hang detection. |
| Complementary reset outputs | RST (push-pull HIGH) and RST/MR (open-drain LOW) enable simultaneous interface with multiple logic families without pull-up resistors. |
| Ultra-low 5.5 µA supply current | Enables continuous supervision in always-on subsystems (e.g., RTC backup, sensor wake logic) without measurable battery drain. |
| Reset validity to 1 V VDD | Ensures clean reset assertion even during severe brownout, preventing partial execution or latch-up in downstream µP peripherals. |
Applications
| Industrial Process Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Supervises 2.5 V core supply and monitors µP activity in PLC I/O modules operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Voltage supervisor and watchdog timer - asserts reset if VDD drops below 2.63 V or WDI stalls for >1.6 s. Use Value: Prevents spurious relay actuation or analog sensor corruption by holding µP in reset until supply stabilizes and firmware resumes watchdog servicing. |
Use Scenario: Powers on and supervises the main 2.5 V rail of a handheld ECG device powered by a single Li-ion cell (2.8–4.2 V range). IC Role / Device Role / Timing Role: Fixed-threshold supervisor with low-VDD reset validity - maintains reset assertion down to 1 V during battery depletion. Use Value: Guarantees controlled shutdown before data loss or memory corruption, extending usable battery life while preserving patient measurement integrity. |
| Embedded Test Instrument | Smart Energy Meter |
Use Scenario: Ensures reliable boot sequence in a benchtop multimeter with FPGA-based signal processing and isolated communication interfaces. IC Role / Device Role / Timing Role: Power-on reset generator and watchdog monitor - leverages 51 s start-up timeout to allow FPGA configuration before watchdog activation. Use Value: Eliminates need for external POR delay circuitry; reduces risk of misconfigured FPGA causing bus contention or ADC saturation. |
Use Scenario: Monitors 2.5 V auxiliary supply powering metrology ASIC and real-time clock in a DIN-rail energy meter exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Temperature-stable voltage supervisor - maintains ±1.5% threshold accuracy from –40°C to +85°C without calibration. Use Value: Avoids false resets due to thermal drift, ensuring uninterrupted metering and secure firmware updates under field conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88011IH526Z-T7A | No watchdog timer; identical 2.63 V VDD threshold, same pinout and reset outputs. | Suitable where only power-supply supervision is required, not µP activity monitoring. | Select when watchdog functionality is unnecessary and cost reduction is prioritized. |
| MAX6326XR26-T | 2.63 V fixed threshold, no watchdog, 3 µA supply current, SOT-23-5 package, ±2.5% accuracy. | Lacks watchdog and complementary outputs; requires external pull-up for active-low reset. | Choose for ultra-low-power applications where ±2.5% threshold tolerance is acceptable and reset polarity is flexible. |
Compared with ISL88013IH526Z-T7A, ISL88011IH526Z-T7A removes watchdog capability but retains identical supervision accuracy and output architecture, while MAX6326XR26-T trades accuracy and dual-reset flexibility for lower quiescent current-making each suitable for distinct design priorities: full-feature supervision, cost-optimized supervision, or minimal-power supervision.
Availability
ISL88013IH526Z-T7A is available at Aetrix Electronics and suitable for industrial process control systems, portable medical monitors, embedded test instruments, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for ISL88013IH526Z-T7A 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 acquired Intersil in 2017 and continues to manufacture and support its precision analog and power management portfolio, emphasizing high-reliability industrial and infrastructure solutions.
The ISL88013IH526Z-T7A belongs to Renesas' legacy Intersil voltage supervisor family, designed specifically for low-power, high-accuracy power-on reset and watchdog supervision in space-constrained embedded systems.
FAQ
What is the exact VDD reset threshold voltage for ISL88013IH526Z-T7A?
The ISL88013IH526Z-T7A has a factory-programmed fixed VDD threshold of 2.63 V, with guaranteed accuracy of ±1.5% over the full industrial temperature range (–40°C to +85°C). This value is confirmed in the "Ordering Information" table (page 4) and "Electrical Specifications" section (page 6) of FN8093 Rev 5.00, where VTHVDD = 2.59 V (min), 2.63 V (typ), and 2.67 V (max) at 2.63 V nominal.
Does ISL88013IH526Z-T7A include a watchdog timer, and what are its timeout values?
Yes, ISL88013IH526Z-T7A includes a watchdog timer with two distinct timeout modes: a 51 s start-up timeout (to accommodate system boot and initialization) and a 1.6 s nominal normal-mode timeout (to detect firmware hangs). These values are explicitly specified in the "Electrical Specifications" table (page 7, Note 8) and functional block diagram (page 4) of FN8093 Rev 5.00.
What are the reset output configurations supported by ISL88013IH526Z-T7A?
ISL88013IH526Z-T7A provides complementary reset outputs: an active-high push-pull RST pin and an active-low open-drain RST/MR pin. The RST pin drives HIGH during reset (VDD–0.4 V min), while RST/MR pulls LOW (≤0.4 V at 0.5 mA sink). Both outputs remain asserted for the full POR delay (200 ms) after VDD recovers above 2.63 V.
Can ISL88013IH526Z-T7A monitor a second voltage rail besides VDD?
No, ISL88013IH526Z-T7A monitors only the VDD supply rail at its fixed 2.63 V threshold. Unlike ISL88012 or ISL88014, it does not feature a VMON pin for adjustable secondary voltage monitoring. Its fifth pin is WDI (watchdog input), not VMON - confirmed by the "Pinouts" diagram (page 2) and "Pin Descriptions" table (page 5) in FN8093 Rev 5.00.
What is the minimum supply voltage at which ISL88013IH526Z-T7A can assert a valid reset signal?
ISL88013IH526Z-T7A guarantees valid reset assertion down to VDD = 1 V, as stated in the "Features" list (page 1) and "Principles of Operation" section (page 9) of FN8093 Rev 5.00. This ensures robust brownout protection even during deep supply sag, preventing undefined µP states before the reset signal becomes invalid.
ISL88013IH526Z-T7A 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:
- 2.63V
- 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
ISL88013IH526Z-T7A FAQ
1.How can I place an order for ISL88013IH526Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88013IH526Z-T7A 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 ISL88013IH526Z-T7A reliable?
The price and inventory of ISL88013IH526Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88013IH526Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88013IH526Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88013IH526Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88013IH526Z-T7A?
ISL88013IH526Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88013IH526Z-T7A 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 ISL88013IH526Z-T7A?
For technical support, including ISL88013IH526Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88013IH526Z-T7A requirements.
6.How does Aetrix verify that ISL88013IH526Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88013IH526Z-T7A 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 ISL88013IH526Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88013IH526Z-T7A?
All ISL88013IH526Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88013IH526Z-T7A, 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 ISL88013IH526Z-T7A part is unused and in its original packaging.
Return procedure for ISL88013IH526Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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