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Renesas ISL88011IH523Z-T7A
- Part No.:
- ISL88011IH523Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88011IH523Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:104
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Product details
Overview
ISL88011IH523Z-T7A from Renesas (formerly Intersil) is a single-supply voltage supervisor IC in 5-lead SOT-23 packaging, featuring a fixed 2.32V ±1.5% VDD trip threshold, adjustable Power-On Reset timeout via external capacitor on CPOR pin, complementary active-low (RST) and active-high (RST) reset outputs, and manual reset input (RST/MR). It ensures reliable microprocessor power-up sequencing in battery-powered embedded systems.
For engineers reviewing the ISL88011IH523Z-T7A datasheet, ISL88011IH523Z-T7A pinout, ISL88011IH523Z-T7A application, or ISL88011IH523Z-T7A equivalent, key selection considerations include its 2.32V fixed VDD monitoring threshold, 200ms nominal POR delay (extendable via CPOR), ultra-low 5.5µA supply current, operation down to VDD = 1V, and immunity to power-supply transients.
Technical Context
The ISL88011IH523Z-T7A implements a precision bandgap-based voltage reference comparator with ±1.5% threshold accuracy over -40°C to +85°C, hysteresis of 23mV at 2.32V, and internal POR circuitry activated at VDD ≥ 1V. Its dual reset outputs (push-pull RST and open-drain RST/MR) support flexible system-level reset signaling.
Unlike ISL88012/ISL88014/ISL88015, this variant lacks VMON or WDI pins and does not support dual-voltage monitoring or watchdog functionality. It relies solely on factory-programmed VTHVDD = 2.32V for VDD supervision and uses CPOR pin capacitance to scale tPOR beyond the base 200–250ms range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.32V ±1.5% - factory-trimmed fixed trip point for +2.3V rail monitoring; enables precise brownout detection without external resistors. |
| POR Timeout (base) | 200–250ms - ensures stable power-up before releasing reset; extended via external capacitor on CPOR pin (e.g., 30pF → ~2.5s). |
| Supply Current | 5.5µA typical at VDD = 2.5V - supports multi-year battery life in portable instrumentation and low-power IoT edge nodes. |
| Reset Validity | Down to VDD = 1V - guarantees functional reset assertion during deep brownout or battery discharge below nominal operating voltage. |
| Hysteresis | 23mV at 2.32V - prevents false resets due to noise or ripple near trip point, critical for noisy industrial DC rails. |
| Output Drive | RST push-pull (VDD–0.4V high, 0.4V low @ 0.4mA); RST/MR open-drain - allows direct connection to µP reset inputs or pull-up to different voltage domains. |
| Operating Temp | -40°C to +85°C - qualified for industrial-grade embedded control, process automation, and automotive body electronics. |
Pinout & Package
Package: 5-lead Pb-free SOT-23 (JEDEC MO-178AA, package drawing P5.064), footprint-compatible with industry-standard 5-pin SOT-23 layouts.
| 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 controller signal to force system reset. |
| 2 - GND | Ground reference | Common return path for all internal comparators and reset logic; must be low-impedance to ensure accurate threshold sensing. |
| 3 - RST | Active-high push-pull reset output | Drives HIGH (VDD–0.4V) when not in reset; LOW (≤0.4V) during reset - directly interfaces with µP / FPGA / ASIC reset inputs requiring active-HIGH assertion. |
| 4 - VDD | Supply voltage and monitored input | Power source (2.0–5.5V) and primary monitored rail; internal comparator compares against 2.32V reference; POR activates at ≥1V. |
| 5 - CPOR | Capacitive POR timeout adjustment input | Connect external capacitor to GND to linearly extend tPOR beyond 250ms baseline; stray capacitance must be minimized for timing accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.32V VDD monitoring | Eliminates external resistor divider, reducing BOM count and layout area while maintaining ±1.5% accuracy across temperature. |
| Adjustable POR timeout | Enables system-specific power-up timing tuning (e.g., FPGA configuration load time, LDO settling) without firmware changes. |
| Complementary reset outputs | Supports both active-HIGH and active-LOW reset architectures in same design, simplifying integration with mixed-vendor SoCs. |
| Manual reset input with debounce | Hardware-level MR pulse filtering removes switch bounce artifacts, avoiding spurious resets during field maintenance or diagnostics. |
| Ultra-low quiescent current | Reduces standby power draw in always-on devices such as smart sensors and battery-backed controllers, extending operational lifetime. |
Applications
| Industrial Process Controller | Portable Medical Monitor |
|---|---|
|
Use Scenario: Monitoring 2.3V auxiliary power rail in PLC I/O module during cold start and brownout events. IC Role / Device Role / Timing Role: Voltage supervisor ensuring µC remains held in reset until 2.3V rail stabilizes above 2.32V with 23mV hysteresis. Use Value: Prevents erratic firmware execution during marginal power conditions, eliminating field failures caused by undervoltage-induced register corruption. |
Use Scenario: Supervising main 2.3V Li-ion battery output in handheld ECG device during discharge cycles. IC Role / Device Role / Timing Role: Single-rail supervisor asserting reset when battery drops below 2.32V, with POR delay allowing analog front-end stabilization. Use Value: Guarantees clean shutdown before ADC/DAC bias points collapse, preserving measurement integrity and patient data safety. |
| Smart Energy Meter | Automotive Body Control Module |
|
Use Scenario: Validating 2.3V RTC backup supply after main power interruption in utility meter. IC Role / Device Role / Timing Role: Low-current supervisor (5.5µA) maintaining reset state on RTC domain while minimizing battery drain over 10+ year service life. Use Value: Extends coin-cell lifetime beyond specification while ensuring timekeeping resumes only after stable 2.3V rail restoration. |
Use Scenario: Power-on sequencing of 2.3V CAN transceiver supply in door module during vehicle wake-up. IC Role / Device Role / Timing Role: Ensures CAN PHY is fully powered and stable before enabling MCU communication interface via RST signal. Use Value: Eliminates bus arbitration errors and transceiver lockup during cold cranking or low-battery scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88011IH522Z-T7A | Fixed VDD threshold = 2.19V ±1.5%; otherwise identical pinout, features, and timing. | Suitable where system requires earlier reset assertion during deeper brownout (e.g., 2.2V rail with tighter margin). | Select when 2.19V trip better matches actual rail tolerance or legacy design requirements. |
| MAX6326XR23+T | 2.32V fixed threshold, but no CPOR adjustability; 3-pin SOT-23; only active-low reset output. | Limited to simple reset-only use cases without manual reset or extended POR; smaller footprint but less flexible. | Choose for space-constrained designs needing minimal functionality and lower cost, accepting loss of CPOR and RST. |
Compared with ISL88011IH523Z-T7A, ISL88011IH522Z-T7A offers a lower trip point for tighter brownout response, while MAX6326XR23+T sacrifices CPOR adjustability and dual-reset capability for reduced size and cost-making it suitable only for basic reset needs.
Availability
ISL88011IH523Z-T7A is available at Aetrix Electronics and suitable for industrial process control systems, portable medical monitors, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for ISL88011IH523Z-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 support its precision analog and power management portfolio, emphasizing reliability, low-power design, and industrial-grade qualification.
The ISL88011IH523Z-T7A belongs to Renesas' legacy voltage supervisor family designed specifically for robust, low-quiescent-current power monitoring in space- and power-constrained embedded systems.
FAQ
What is the exact voltage threshold and accuracy of the ISL88011IH523Z-T7A?
The ISL88011IH523Z-T7A has a factory-programmed fixed VDD trip threshold of 2.32V with ±1.5% accuracy over the full -40°C to +85°C 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 exclusively to the ISL88011IH523Z-T7A variant.
Does the ISL88011IH523Z-T7A support watchdog timer or dual-voltage monitoring?
No, the ISL88011IH523Z-T7A does not support watchdog timer or dual-voltage monitoring. Per the Product Features Table (page 5) and Pin Descriptions (page 5), it lacks WDI and VMON pins and is designated solely as a single-supply supervisor. Watchdog and dual-monitoring functions are exclusive to ISL88013/ISL88015 and ISL88012/ISL88014 variants, respectively.
How is the Power-On Reset timeout adjusted on the ISL88011IH523Z-T7A?
The ISL88011IH523Z-T7A uses the CPOR pin (Pin 5) to adjust POR timeout: connecting an external capacitor between CPOR and GND scales tPOR linearly (e.g., 30pF extends 250ms baseline to ~2.5s). This behavior is documented in Figure 3 (page 9) and Principles of Operation (page 9) of FN8093 Rev 5.00.
What are the reset output types provided by the ISL88011IH523Z-T7A?
The ISL88011IH523Z-T7A provides two complementary reset outputs: Pin 3 (RST) is a push-pull active-HIGH output (VDD–0.4V high, ≤0.4V low), and Pin 1 (RST/MR) is an open-drain active-LOW output. Both are asserted simultaneously during reset, as confirmed in the Pin Descriptions (page 5) and Functional Block Diagram (page 4).
Can the ISL88011IH523Z-T7A operate with supply voltages below 2.32V?
Yes - the ISL88011IH523Z-T7A asserts reset down to VDD = 1V, and its internal POR circuit activates at ≥1V. While the 2.32V threshold defines the trip point for normal supervision, the device remains functional and maintains valid reset signaling even during deep brownout, as specified in the Absolute Maximum Ratings (page 6) and Principles of Operation (page 9).
ISL88011IH523Z-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:
- 2.32V
- 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
ISL88011IH523Z-T7A FAQ
1.How can I place an order for ISL88011IH523Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88011IH523Z-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 ISL88011IH523Z-T7A reliable?
The price and inventory of ISL88011IH523Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88011IH523Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88011IH523Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88011IH523Z-T7A transactions.
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ISL88011IH523Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88011IH523Z-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 ISL88011IH523Z-T7A?
For technical support, including ISL88011IH523Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88011IH523Z-T7A requirements.
6.How does Aetrix verify that ISL88011IH523Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88011IH523Z-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 ISL88011IH523Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88011IH523Z-T7A?
All ISL88011IH523Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88011IH523Z-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 ISL88011IH523Z-T7A part is unused and in its original packaging.
Return procedure for ISL88011IH523Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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