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Renesas ISL88011IH546Z-T7A
- Part No.:
- ISL88011IH546Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88011IH546Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,795
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Product details
Overview
ISL88011IH546Z-T7A from Renesas (formerly Intersil) is a 5-lead SOT-23 voltage supervisor IC with fixed 4.64V VDD monitoring, adjustable Power-On Reset timeout via CPOR pin, complementary active-low and active-high reset outputs (RST/MR and RST), manual reset input, and operation down to VDD = 1V. It delivers ±1.5% threshold accuracy, 5.5µA supply current, and supports critical µP/µC power sequencing in industrial embedded systems.
For engineers reviewing the ISL88011IH546Z-T7A datasheet, ISL88011IH546Z-T7A pinout, ISL88011IH546Z-T7A application, or ISL88011IH546Z-T7A equivalent, key selection criteria include its fixed 4.64V trip point, dual-reset output capability, CPOR-based POR delay tuning, -40°C to +85°C operating range, and RoHS-compliant 5 Ld SOT-23 package.
Technical Context
The ISL88011IH546Z-T7A implements a precision bandgap reference and comparator architecture to monitor VDD against a factory-programmed 4.64V threshold with 46mV hysteresis. Its dual-output structure provides both push-pull RST (active-high) and open-drain RST/MR (active-low), enabling direct interface with diverse logic families without external pull-ups.
Power-On Reset timing is initiated at VDD ≥ 1V and defaults to 200–250ms; this delay is extended by adding an external capacitor to the CPOR pin-e.g., 30pF yields ~2.5s timeout. The device asserts reset if VDD falls below 4.64V or during manual MR assertion, holding reset for tPOR after recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 4.64V ±1.5% over temperature - ensures reliable reset assertion for 5V rail brownout detection |
| Supply Current | 5.5–11.5µA - enables ultra-low-power operation in battery-backed or energy-sensitive systems |
| POR Timeout | 200–250ms (CPOR open); scalable to seconds with external capacitor - supports FPGA configuration and OS boot timing |
| Reset Outputs | Complementary RST (push-pull, active-high) and RST/MR (open-drain, active-low) - eliminates need for level-shifting or external inverters |
| Operating Range | -40°C to +85°C - qualified for industrial temperature environments without derating |
| Reset Validity | Down to VDD = 1V - guarantees reset integrity during deep brownout or partial power loss |
| Hysteresis | 46mV at 4.64V - prevents chatter on noisy or slowly recovering power rails |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS-compliant, JEDEC MO178AA / EIAJ SC-74 compliant, pkg drawing P5.064).
| 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 |
| 2 - GND | Ground reference | Primary return path for internal comparators, reference, and output drivers |
| 3 - RST | Active-high push-pull reset output | Drives HIGH (to VDD) when not in reset; sinks current when asserted LOW |
| 4 - VDD | Supply voltage and monitored input | Provides bias and serves as primary voltage sense node for 4.64V threshold detection |
| 5 - CPOR | Capacitor-based POR timeout adjustment | Connects external capacitor to ground to linearly extend tPOR beyond default 250ms |
Key Features
| Feature | Design Value |
|---|---|
| Dual complementary reset outputs | Eliminates need for external inverters or pull-up resistors in mixed-logic systems |
| Adjustable POR timeout via CPOR | Enables precise timing alignment with FPGA configuration, bootloader execution, or OS initialization sequences |
| ±1.5% voltage threshold accuracy | Reduces design margin requirements and avoids unnecessary over-specification of upstream regulators |
| Ultra-low 5.5µA supply current | Minimizes quiescent load on backup batteries or low-power auxiliary rails |
| Reset valid down to VDD = 1V | Ensures fail-safe behavior during severe undervoltage conditions where other supervisors may release prematurely |
Applications
| Industrial Process Controller | Embedded Microcontroller System |
|---|---|
Use Scenario: Monitoring 5V main supply in PLC I/O modules subject to field-induced transients and thermal cycling. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset, brownout protection, and manual reset for ARM Cortex-M4-based controller. Use Value: Prevents erratic firmware execution during unstable power-up and ensures deterministic restart after field reset button press. | Use Scenario: Securing boot sequence of a battery-powered smart sensor node with integrated MCU and RF transceiver. IC Role / Device Role / Timing Role: Supervisor asserting reset until 3.3V rail stabilizes and holding reset for ≥200ms to allow crystal oscillator startup and register initialization. Use Value: Guarantees clean state entry before firmware loads, eliminating spurious wakeups or corrupted memory writes. |
| Computer Peripheral Card | Portable Diagnostic Instrument |
Use Scenario: PCIe add-in card requiring stable 3.3V and 12V rails before enumeration and driver loading. IC Role / Device Role / Timing Role: Dual-rail monitoring via external resistor divider (not applicable to ISL88011IH546Z-T7A alone; used in conjunction with secondary supervisor or discrete circuitry). Use Value: Enables robust power-good signaling to host BIOS and prevents enumeration failure due to marginal rail conditions. | Use Scenario: Handheld medical device with Li-ion battery and low-noise analog front-end requiring guaranteed reset during battery insertion or low-voltage cutoff. IC Role / Device Role / Timing Role: Primary supervisor detecting 4.64V system rail and asserting reset if battery voltage drops below safe operating level. Use Value: Ensures analog subsystem remains disabled until full power is available, preventing measurement artifacts or calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88011IH544Z-T7A | Fixed VDD threshold = 4.38V (vs. 4.64V); otherwise identical pinout, features, and timing | Suitable for 4.5V nominal rails or tighter tolerance margins around 4.3V supplies | Select when supervising 4.3–4.4V systems where 4.64V would cause premature reset release |
| MAX6326UR46-T | Fixed 4.63V threshold, 3.5µA supply current, no CPOR adjustability, single active-low reset output | Lacks dual-reset outputs and POR timeout tuning; suited for space-constrained designs where only basic reset is required | Choose when board area is critical and complementary outputs or programmable POR are unnecessary |
Compared with ISL88011IH546Z-T7A, ISL88011IH544Z-T7A offers lower trip voltage for tighter 4.3V rail supervision, while MAX6326UR46-T trades dual outputs and CPOR flexibility for lower quiescent current and smaller footprint-making it suitable only for simplified reset-only use cases.
Availability
ISL88011IH546Z-T7A is available at Aetrix Electronics and suitable for industrial process control systems, embedded microcontroller power sequencing, and portable diagnostic instrumentation requiring stable component supply across long-lifecycle programs.
Supply support for ISL88011IH546Z-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 Corporation is a global semiconductor leader delivering high-performance analog, power management, and embedded processing solutions for industrial, automotive, and infrastructure markets.
The ISL88011 family was designed specifically for reliable, low-power voltage supervision in space-constrained embedded systems-emphasizing precision thresholding, dual-output flexibility, and robustness against supply transients.
FAQ
What is the exact voltage threshold and accuracy of the ISL88011IH546Z-T7A?
The ISL88011IH546Z-T7A has a factory-programmed VDD voltage threshold of 4.64V with ±1.5% accuracy over the full -40°C to +85°C temperature range. This specification is confirmed in the Electrical Specifications table on page 6 of FN8093 Rev 5.00, where VTHVDD for IH546 variants is listed as 4.57V (min), 4.64V (typ), and 4.71V (max). Hysteresis is 46mV, ensuring noise immunity during rail recovery.
Does the ISL88011IH546Z-T7A support adjustable POR timeout, and how is it implemented?
Yes, the ISL88011IH546Z-T7A supports adjustable Power-On Reset timeout via the CPOR pin. Connecting an external capacitor between CPOR and GND extends the default 200–250ms tPOR-e.g., a 30pF capacitor increases timeout to approximately 2.5s. This is explicitly documented in the Principles of Operation section (page 9) and Figure 3 of FN8093 Rev 5.00. No resistor network or additional components are required.
What are the reset output configurations available on the ISL88011IH546Z-T7A?
The ISL88011IH546Z-T7A provides two complementary reset outputs: an active-high push-pull RST pin and an active-low open-drain RST/MR pin. The RST pin drives to VDD when inactive and pulls low during reset; RST/MR operates as an open-drain output asserted LOW during reset and also accepts manual reset signals. This dual-output capability is confirmed in the Product Features Table (page 5) and Pin Descriptions (page 5).
Can the ISL88011IH546Z-T7A monitor a second voltage rail, such as VMON?
No, the ISL88011IH546Z-T7A does not support VMON functionality. It is a single-supply supervisor monitoring only VDD. The VMON pin is present on ISL88012, ISL88014, and ISL88015 variants-but not on ISL88011. Per the Pin Descriptions table (page 5), ISL88011 uses Pin 3 as RST and Pin 5 as CPOR; VMON is absent. Attempting to apply voltage to Pin 3 (RST) as a monitor input will damage the device.
What is the minimum operating voltage at which ISL88011IH546Z-T7A maintains valid reset assertion?
The ISL88011IH546Z-T7A guarantees valid reset assertion 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 fail-safe behavior during deep brownout events where other supervisors may release reset prematurely, preserving system integrity until full recovery.
ISL88011IH546Z-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:
- 4.64V
- 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
ISL88011IH546Z-T7A FAQ
1.How can I place an order for ISL88011IH546Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88011IH546Z-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 ISL88011IH546Z-T7A reliable?
The price and inventory of ISL88011IH546Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88011IH546Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88011IH546Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88011IH546Z-T7A transactions.
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4.How is shipping managed for ISL88011IH546Z-T7A?
ISL88011IH546Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88011IH546Z-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 ISL88011IH546Z-T7A?
For technical support, including ISL88011IH546Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88011IH546Z-T7A requirements.
6.How does Aetrix verify that ISL88011IH546Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88011IH546Z-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 ISL88011IH546Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88011IH546Z-T7A?
All ISL88011IH546Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88011IH546Z-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 ISL88011IH546Z-T7A part is unused and in its original packaging.
Return procedure for ISL88011IH546Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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