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Renesas ISL88011IH546Z-TK
- Part No.:
- ISL88011IH546Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88011IH546Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,632
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Product details
Overview
ISL88011IH546Z-TK from Renesas (formerly Intersil) is a single-supply voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 4.64V VDD monitoring with ±1.5% threshold accuracy, 200ms power-on reset timeout, complementary active-low and active-high reset outputs (RST/MR and RST), and manual reset input - used for reliable µP/µC power sequencing in embedded control systems.
For engineers reviewing the ISL88011IH546Z-TK datasheet, ISL88011IH546Z-TK pinout, ISL88011IH546Z-TK application, or ISL88011IH546Z-TK equivalent, this device delivers precise brownout detection down to VDD = 1V, ultra-low 5.5µA supply current, and robust immunity to power-supply transients - critical for battery-powered instrumentation and industrial microcontroller supervision.
Technical Context
The ISL88011IH546Z-TK implements a factory-programmed 4.64V fixed-voltage trip point on VDD with 46mV hysteresis, ensuring stable reset assertion during supply ramp-up and recovery. It asserts complementary reset signals (open-drain RST/MR and push-pull RST) when VDD falls below threshold or during manual reset activation.
No watchdog timer or adjustable VMON functionality is present - unlike ISL88013/ISL88015 or ISL88012/ISL88014 variants. POR timeout is nominally 200ms but extendable via external capacitor on CPOR pin; reset remains valid down to VDD = 1V, supporting low-voltage system operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 4.64V ±1.5% over -40°C to +85°C - ensures accurate 5V rail supervision with minimal drift. |
| POR Timeout | 200ms nominal (adjustable via CPOR capacitor) - guarantees sufficient time for µP oscillator stabilization and register initialization. |
| Supply Current | 5.5µA typical at 5V - enables long-term operation in battery-backed or energy-constrained systems. |
| Reset Outputs | Complementary RST (push-pull high) and RST/MR (open-drain low) - supports direct interface to both active-high and active-low reset inputs. |
| Operating Range | VDD = 2.0V to 5.5V, temperature = -40°C to +85°C - suitable for industrial-grade embedded applications. |
| Reset Validity | Reset signal functional down to VDD = 1V - prevents spurious release during deep brownout conditions. |
| Hysteresis | 46mV at 4.64V trip point - suppresses noise-induced false resets near threshold crossing. |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS-compliant, JEDEC MO178AA / EIAJ SC-74 compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined active-low reset output & manual reset input | Open-drain output pulled low during reset; debounced active-low input accepts push-button or controller signal. |
| 2 - GND | Ground reference | Common return path for internal comparators, reset logic, and leakage-limited biasing. |
| 3 - RST | Active-high reset output | Push-pull output driven high during reset assertion - directly interfaces with µP active-high reset pins. |
| 4 - VDD | Supply voltage and monitored input | Power source and primary supervision node - compared against 4.64V internal reference with hysteresis. |
| 5 - CPOR | Capacitive POR timeout delay input | Connects external capacitor to ground to scale tPOR beyond 200ms - e.g., 30pF extends to ~2.5s. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.64V VDD monitoring | Factory-trimmed threshold with ±1.5% accuracy over full temperature range - eliminates external resistor network for 5V rail supervision. |
| Complementary reset outputs | RST (push-pull high) and RST/MR (open-drain low) enable drop-in compatibility with diverse µP reset architectures without level-shifting. |
| Adjustable POR timeout | CPOR pin allows capacitor-based extension of reset hold time - supports FPGA configuration loading or slow-ramping supplies. |
| Manual reset input | Debounced MR function on RST/MR pin enables hardware-initiated system reset via push-button or controller GPIO. |
| Ultra-low quiescent current | 5.5µA typical supply current - minimizes battery drain in portable instrumentation and always-on monitoring nodes. |
Applications
| Industrial Process Controller | Portable Medical Instrument |
|---|---|
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 asserting reset if VDD drops below 4.64V during brownout, holding µC in reset until stable. Use Value: Prevents corrupted I/O state transitions and firmware execution errors during unstable power conditions. |
Use Scenario: Power sequencing in handheld glucose meter with coin-cell backup and intermittent 5V USB charging. IC Role / Device Role / Timing Role: Ensures µC remains held in reset until 5V rail reaches 4.64V and stabilizes for ≥200ms after charge initiation. Use Value: Eliminates boot failures caused by undershot USB voltage during cold-start or cable impedance effects. |
| Embedded Test Equipment | Smart Sensor Node |
Use Scenario: Supervising dual-rail 5V/3.3V subsystems in benchtop multimeter where 5V powers analog front-end and display. IC Role / Device Role / Timing Role: Single-device supervision of 5V rail with manual reset override for field calibration mode entry. Use Value: Reduces BOM count vs. discrete supervisor + reset generator while maintaining test-mode accessibility. |
Use Scenario: Battery-powered environmental sensor transmitting via LoRaWAN, requiring guaranteed boot integrity after wake-from-sleep. IC Role / Device Role / Timing Role: Detects VDD collapse during RF transmission surge and asserts reset to prevent memory corruption. Use Value: Maintains data logging continuity by forcing clean restart instead of erratic peripheral behavior under transient load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88013IH546Z-TK | Includes watchdog timer (1.6s normal / 51s startup timeout); same 4.64V VDD threshold and pinout. | Required where µP activity must be verified post-boot; adds WDI pin and timing complexity. | Select ISL88013IH546Z-TK only if watchdog functionality is needed - otherwise ISL88011IH546Z-TK offers simpler integration and lower cost. |
| MAX6326US46D3+ | Pin-compatible 4.63V supervisor (±1.5%) with 200ms POR, but no CPOR adjustability or complementary RST output. | Lacks manual reset input and adjustable timeout - limited to basic reset generation without user timing control. | Choose MAX6326US46D3+ only when footprint compatibility is mandatory and CPOR/RST/MR features are unused. |
Compared with ISL88013IH546Z-TK, the ISL88011IH546Z-TK removes watchdog overhead for deterministic reset-only operation; versus MAX6326US46D3+, it retains CPOR adjustability and dual-reset signaling - making it optimal for systems needing flexible timing and robust reset architecture.
Availability
ISL88011IH546Z-TK is available at Aetrix Electronics and suitable for industrial process controllers, portable medical instruments, and embedded test equipment requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for ISL88011IH546Z-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 (acquired Intersil in 2017) is a global semiconductor leader specializing in microcontrollers, analog power management, and precision timing solutions for industrial, automotive, and infrastructure markets.
The ISL88011IH546Z-TK belongs to Renesas' legacy Intersil voltage supervisor family, designed specifically for low-power, high-accuracy power-on reset and brownout protection in space-constrained embedded systems.
FAQ
What is the exact voltage threshold and accuracy of the ISL88011IH546Z-TK?
The ISL88011IH546Z-TK has a factory-programmed VDD threshold of 4.64V with ±1.5% accuracy over the full -40°C to +85°C operating 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 ISL88011IH546Z-TK variant - not to other members of the ISL8801x family.
Does the ISL88011IH546Z-TK support watchdog timer functionality?
No, the ISL88011IH546Z-TK does not include a watchdog timer. Watchdog capability is exclusive to ISL88013 and ISL88015 variants per the Product Features Table (page 5) and Functional Block Diagrams (page 4). The ISL88011IH546Z-TK provides only voltage supervision, POR, and manual reset - making it a dedicated reset supervisor without WDI pin or timeout logic.
Can the power-on reset timeout of the ISL88011IH546Z-TK be extended beyond 200ms?
Yes, the ISL88011IH546Z-TK supports adjustable POR timeout via the CPOR pin: connecting an external capacitor between CPOR and GND scales tPOR linearly - e.g., a 30pF capacitor extends the timeout to approximately 2.5s (per Figure 3, page 9). This feature is explicitly documented for ISL88011 and ISL88014 in the Principles of Operation section.
What are the reset output configurations supported by the ISL88011IH546Z-TK?
The ISL88011IH546Z-TK provides two complementary reset outputs: RST (active-high, push-pull) and RST/MR (active-low, open-drain). As confirmed in the Product Features Table (page 5) and Pin Descriptions (page 5), both outputs are asserted simultaneously during reset events - enabling direct interface to µPs with either reset polarity requirement without external inverters.
Is the ISL88011IH546Z-TK compatible with 3.3V microcontrollers?
Yes, the ISL88011IH546Z-TK operates from VDD = 2.0V to 5.5V and asserts valid reset signals down to VDD = 1V. Its RST output drives high to VDD–0.4V (min) when sourcing 0.4mA, and RST/MR pulls low to ≤0.4V when sinking 0.5mA - meeting standard 3.3V logic thresholds. These specifications are verified in the Electrical Specifications table (page 7) under VOH and VOL parameters.
ISL88011IH546Z-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:
- 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-TK FAQ
1.How can I place an order for ISL88011IH546Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88011IH546Z-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 ISL88011IH546Z-TK reliable?
The price and inventory of ISL88011IH546Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88011IH546Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88011IH546Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88011IH546Z-TK transactions.
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4.How is shipping managed for ISL88011IH546Z-TK?
ISL88011IH546Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88011IH546Z-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 ISL88011IH546Z-TK?
For technical support, including ISL88011IH546Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88011IH546Z-TK requirements.
6.How does Aetrix verify that ISL88011IH546Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88011IH546Z-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 ISL88011IH546Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88011IH546Z-TK?
All ISL88011IH546Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88011IH546Z-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 ISL88011IH546Z-TK part is unused and in its original packaging.
Return procedure for ISL88011IH546Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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