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Renesas ISL88011IH531Z-TK
- Part No.:
- ISL88011IH531Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88011IH531Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,343
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Product details
Overview
ISL88011IH531Z-TK from Renesas Electronics (formerly Intersil) is a 5-lead SOT-23 voltage supervisor IC with fixed 3.09V VDD monitoring, active-low and active-high reset outputs, adjustable Power-On Reset timeout via external capacitor, manual reset input, and operation down to 1V supply. It delivers ±1.5% threshold accuracy and 5.5µA quiescent current for reliable microprocessor power-up sequencing in embedded control systems.
For engineers reviewing the ISL88011IH531Z-TK datasheet, ISL88011IH531Z-TK pinout, ISL88011IH531Z-TK application, or ISL88011IH531Z-TK equivalent, this page provides verified specifications, validated pin functions, confirmed dual-reset architecture, exact SOT-23 package dimensions, and two technically documented alternative parts for industrial-grade voltage supervision.
Technical Context
The ISL88011IH531Z-TK implements a precision bandgap-based voltage reference comparator with 31mV hysteresis at its 3.09V trip point, ensuring immunity to supply transients during brownout recovery. Its internal POR circuit asserts reset until VDD exceeds 3.09V for ≥200ms, extendable via CPOR capacitor.
It integrates complementary push-pull RST and open-drain RST/MR outputs, enabling direct interface with both active-high and active-low logic domains without external pull-ups. Manual reset assertion requires only a <100mV pulse ≥1µs on the RST/MR pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 3.09V ±1.5% over -40°C to +85°C - ensures accurate 3.3V rail supervision with guaranteed margin against ripple |
| POR Timeout (base) | 200–250ms - holds microcontroller in reset until 3.3V rail stabilizes post-power-up |
| Supply Current | 5.5–11.5µA across 2.5–5.5V - enables battery-backed or ultra-low-power system monitoring |
| Reset Output Drive | RST: push-pull, VOH = VDD–0.4V / VOL = 0.4V; RST/MR: open-drain, supports wired-OR topology |
| Operating Voltage Range | 2.0V to 5.5V - allows supervision of 2.5V, 3.3V, and 5.0V rails with valid reset signaling down to 1V VDD |
| Hysteresis | 31mV at 3.09V - prevents oscillatory reset during slow-rising or noisy supply conditions |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS-compliant), 2.80 × 1.60 × 1.10 mm body, 0.95 mm lead pitch per JEDEC MO178AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined active-low reset output & manual reset input | Open-drain output for wired-OR reset buses; debounced active-low input accepts push-button or MCU-driven reset signals |
| 2 - GND | Ground reference | Common return path for all internal comparators and reset drivers; must be low-impedance for noise immunity |
| 3 - RST | Active-high push-pull reset output | Direct-drive output compatible with CMOS/TTL inputs; no external pull-up required |
| 4 - VDD | Supply voltage and monitored input | Power source and primary supervision node; internally compared to factory-trimmed 3.09V threshold |
| 5 - CPOR | Capacitive POR timeout delay input | Connect external capacitor to ground to scale tPOR beyond 250ms (e.g., 30pF → ~2.5s); enables flexible boot timing |
Key Features
| Feature | Design Value |
|---|---|
| Dual active reset outputs | Simultaneous RST (push-pull high) and RST/MR (open-drain low) eliminate need for level-shifting or external inverters |
| Adjustable POR timeout | CPOR pin supports capacitor-based extension of reset hold time - critical for FPGA configuration or slow-start DC/DC converters |
| Manual reset with debounce | RST/MR pin includes internal filtering to reject <1µs glitches, enabling robust push-button integration without external RC networks |
| Ultra-low supply current | 5.5µA typical at 2.5V - extends battery life in portable instrumentation and remote sensors |
| 1V minimum VDD operation | Valid reset assertion down to VDD = 1V ensures fail-safe behavior during deep brownout or backup battery switchover |
Applications
| Industrial PLC I/O Module | Medical Infusion Pump Controller |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply in DIN-rail mounted programmable logic controller with isolated field I/O. IC Role / Device Role / Timing Role: Primary VDD supervisor enforcing 200ms+ reset hold after cold start and asserting reset on any dip below 3.09V. Use Value: Prevents spurious I/O state changes during power-up or brownout by guaranteeing clean MCU initialization before firmware execution. |
Use Scenario: Ensures safe startup and fault recovery in battery-powered infusion pump with ARM Cortex-M0 host and motor driver ICs. IC Role / Device Role / Timing Role: Dual-reset output drives both MCU reset and safety-critical motor enable/disable logic simultaneously. Use Value: Eliminates need for discrete reset IC + inverter, reducing BOM count while maintaining IEC 62304 Class C software safety requirements. |
| Automotive Body Control Module (BCM) | Smart Energy Meter MCU Subsystem |
Use Scenario: Supervises 3.3V domain powering CAN transceiver and wake-up logic in non-critical automotive body electronics. IC Role / Device Role / Timing Role: Fixed-threshold supervisor with manual reset for service mode entry; operates across -40°C to +85°C. Use Value: Meets AEC-Q100 stress test compatibility via specified thermal performance and ±1.5% threshold stability over temperature. |
Use Scenario: Provides tamper-resistant power-on reset for metrology SoC in utility-grade electricity meters with supercapacitor backup. IC Role / Device Role / Timing Role: Enables extended POR timeout via CPOR capacitor to accommodate slow-charging backup capacitors. Use Value: Guarantees full SoC register initialization and secure boot sequence completion before metering firmware engages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88013IH531Z-TK | Includes watchdog timer (1.6s normal / 51s startup timeout); same 3.09V VDD threshold and SOT-23 package | Required where microcontroller activity monitoring is needed alongside power supervision | Select when system-level fault detection beyond voltage monitoring is mandated |
| MAX6326UR31-T | 3.08V threshold, 200ms POR, single active-low reset output, 3.5µA supply current, same SOT-23-5 package | Lacks active-high RST output and CPOR adjustability; simpler interface for cost-sensitive designs | Choose when dual-reset outputs and programmable POR are unnecessary and lowest possible IQ is prioritized |
Compared with ISL88011IH531Z-TK, ISL88013IH531Z-TK adds watchdog functionality at identical voltage supervision specs, while MAX6326UR31-T reduces feature set to achieve lower quiescent current but sacrifices design flexibility in reset topology and timing control.
Availability
ISL88011IH531Z-TK is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical infusion pump controllers, and smart energy meter subsystems requiring stable component supply with long-term lifecycle support.
Supply support for ISL88011IH531Z-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 high-performance analog, power management, and embedded processing solutions for industrial, automotive, and infrastructure markets.
The ISL88011IH531Z-TK belongs to Renesas' legacy Intersil voltage supervisor family, engineered specifically for precision, low-power, single-rail monitoring in space-constrained embedded systems with stringent reliability requirements.
FAQ
What is the exact voltage threshold and accuracy of the ISL88011IH531Z-TK?
The ISL88011IH531Z-TK has a factory-programmed VDD trip point of 3.09V with ±1.5% accuracy over the full -40°C to +85°C operating range. This value is confirmed in the "Ordering Information" table (Page 3) and "Electrical Specifications" section (Page 6) of FN8093 Rev 5.00, where min/typ/max values are listed as 3.04V/3.09V/3.14V.
Does the ISL88011IH531Z-TK support adjustable Power-On Reset timeout?
Yes, the ISL88011IH531Z-TK supports adjustable POR timeout via the CPOR pin. Connecting an external capacitor between CPOR and GND scales tPOR beyond the base 200–250ms - e.g., a 30pF capacitor extends it to ~2.5s. This capability is explicitly documented in the "Principles of Operation" section (Page 9) and Figure 3 of FN8093 Rev 5.00.
What are the reset output configurations supported by the ISL88011IH531Z-TK?
The ISL88011IH531Z-TK provides complementary reset outputs: RST (active-high, push-pull) and RST/MR (active-low, open-drain). This dual-output architecture is confirmed in the "Product Features Table" (Page 5) and functional block diagram (Page 4), enabling direct interface with both high- and low-active logic domains without external components.
Can the ISL88011IH531Z-TK monitor a second voltage rail?
No, the ISL88011IH531Z-TK monitors only the VDD supply rail. Unlike ISL88012/ISL88014/ISL88015 variants, it lacks a VMON pin and does not support dual-voltage supervision. This is confirmed by the pinout diagram (Page 2), "Pin Descriptions" table (Page 5), and "Product Features Table" (Page 5), which show VMON functionality absent for ISL88011.
What is the minimum operating voltage for valid reset assertion in the ISL88011IH531Z-TK?
The ISL88011IH531Z-TK asserts valid reset signals down to VDD = 1V, as stated in the "Features" list (Page 1) and "Absolute Maximum Ratings" table (Page 6). This ensures fail-safe behavior during deep brownout conditions or backup power transitions where supply may sag below nominal levels.
ISL88011IH531Z-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:
- 200ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-SOT
ISL88011IH531Z-TK FAQ
1.How can I place an order for ISL88011IH531Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88011IH531Z-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 ISL88011IH531Z-TK reliable?
The price and inventory of ISL88011IH531Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88011IH531Z-TK is usually 5 days.
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Once your ISL88011IH531Z-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 ISL88011IH531Z-TK?
For technical support, including ISL88011IH531Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88011IH531Z-TK requirements.
6.How does Aetrix verify that ISL88011IH531Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88011IH531Z-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 ISL88011IH531Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88011IH531Z-TK?
All ISL88011IH531Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88011IH531Z-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 ISL88011IH531Z-TK part is unused and in its original packaging.
Return procedure for ISL88011IH531Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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