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Renesas ISL88013IH526Z-TK
- Part No.:
- ISL88013IH526Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88013IH526Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,427
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Product details
Overview
ISL88013IH526Z-TK from Intersil is a 5-lead SOT-23 voltage supervisor IC with fixed 2.63V VDD monitoring, watchdog timer (1.6s normal / 51s start-up timeout), complementary active-low and active-high reset outputs, and manual reset input - used for reliable power-on reset and brownout protection in microprocessor-based embedded systems.
For engineers reviewing the ISL88013IH526Z-TK datasheet, ISL88013IH526Z-TK pinout, ISL88013IH526Z-TK application, or ISL88013IH526Z-TK equivalent, key selection criteria include ±1.5% threshold accuracy over temperature, ultra-low 5.5µA supply current, reset validity down to VDD = 1V, immunity to supply transients, and dual RST/RST outputs for flexible system-level reset control.
Technical Context
The ISL88013IH526Z-TK implements a precision bandgap-based voltage reference comparator for VDD supervision at 2.63V ±1.5%, with built-in hysteresis (26mV typical) to prevent noise-induced chatter. Its watchdog timer uses an internal oscillator and resets on WDI edge detection or timeout - with distinct 51s start-up window to accommodate boot sequences before watchdog enforcement begins.
Reset assertion occurs when VDD falls below 2.63V or during manual MR pull-down; both RST (push-pull high) and RST (open-drain low) are asserted simultaneously and held for 200ms after recovery. The device operates from 2.0V to 5.5V and maintains valid reset signaling down to VDD = 1V, ensuring fail-safe behavior during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.63V ±1.5% - factory-trimmed trip point for +2.5V rail monitoring with guaranteed accuracy across -40°C to +85°C. |
| Supply Current | 5.5µA typical at 2.5V - enables battery-backed or ultra-low-power applications without compromising supervision reliability. |
| Watchdog Timeout | 1.6s nominal normal mode / 51s start-up mode - prevents premature reset during OS/FPGA initialization while enforcing runtime fault detection. |
| Reset Delay (tPOR) | 200ms typical - ensures stable power and clock settling before releasing µP/µC from reset state. |
| Reset Output Types | Complementary RST (push-pull high) and RST (open-drain low) - supports direct interface to both active-high and active-low reset domains. |
| Operating Voltage | 2.0V to 5.5V - compatible with 2.5V, 3.3V, and 5V logic families and retains reset functionality down to VDD = 1V. |
| Hysteresis | 26mV at 2.63V threshold - suppresses false triggering due to supply ripple or transient noise on monitored rail. |
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 reset output & manual reset input | Open-drain active-low reset output; also accepts debounced active-low manual reset pulses ≥1µs wide. |
| 2 - GND | Ground reference | System ground connection for all internal comparators, oscillator, and output drivers. |
| 3 - RST | Active-high push-pull reset output | Drives high to VDD during normal operation; pulled low only during reset assertion. |
| 4 - VDD | Supply input & monitored voltage rail | Power source and primary monitored supply; compared against 2.63V internal reference. |
| 5 - WDI | Watchdog timer input | Edge-sensitive input - toggling within 1.6s clears watchdog; no toggle triggers reset after timeout. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.63V VDD supervision | Factory-trimmed threshold eliminates external resistor network, reducing BOM count and layout area for +2.5V rail monitoring. |
| Dual RST/RST outputs | Simultaneous active-high and active-low reset signals enable direct compatibility with diverse processor and peripheral reset architectures. |
| 51s watchdog start-up window | Allows full system boot (OS load, FPGA configuration, firmware initialization) before watchdog enforcement begins - avoids spurious resets. |
| Reset valid to VDD = 1V | Ensures deterministic reset behavior even during severe brownout or battery depletion, preventing undefined µP states. |
| ±1.5% threshold accuracy | Guaranteed over full industrial temperature range (-40°C to +85°C), enabling robust operation in harsh environments without calibration. |
Applications
| Industrial PLC Controller | Medical Diagnostic Handheld |
|---|---|
Use Scenario: Monitors main 2.5V logic supply in programmable logic controller CPU module during field operation with variable ambient temperature and EMI exposure. IC Role / Device Role / Timing Role: Primary VDD supervisor providing power-on reset, brownout detection, and watchdog safety layer for ARM Cortex-M7 core. Use Value: Prevents erratic execution during rail sag by asserting reset before VDD drops below 2.59V, with hysteresis avoiding chatter near threshold. | Use Scenario: Ensures safe startup and runtime integrity of battery-powered ultrasound imaging device with low-noise analog front-end and real-time DSP. IC Role / Device Role / Timing Role: Dual-output supervisor delivering synchronized RST and RST to SoC and ADC subsystems while monitoring 2.5V LDO output. Use Value: Ultra-low 5.5µA quiescent current extends battery life; 51s watchdog start-up window accommodates full FPGA bitstream load before runtime monitoring begins. |
| Automotive Infotainment Head Unit | Network Edge Router Module |
Use Scenario: Supervises 2.5V core voltage in automotive-grade infotainment head unit exposed to cold-crank and load-dump transients. IC Role / Device Role / Timing Role: Immune-to-transient voltage supervisor with manual reset capability for service-mode recovery and watchdog-enforced firmware health check. Use Value: ±1.5% threshold accuracy and transient immunity ensure no false resets during ISO 7637-2 pulse tests; RST/MR pin enables service technician reset via button. | Use Scenario: Provides fail-safe reset coordination between multi-core network processor and packet buffer memory in enterprise edge router. IC Role / Device Role / Timing Role: Centralized reset generator with complementary outputs driving processor reset and DDR PHY reset pins simultaneously. Use Value: Simultaneous RST and RST assertion guarantees atomic reset of tightly coupled subsystems; 200ms tPOR aligns with DDR initialization timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR26-T | Single 2.63V fixed threshold, no watchdog timer, only active-low reset output, 1.6µA supply current. | Lacks watchdog and complementary reset - suitable only where basic POR/brownout is sufficient and board space is critical. | Select when watchdog functionality is unnecessary and lowest possible quiescent current is prioritized over feature set. |
| TPS3808G125DBVR | 2.63V fixed threshold, no watchdog, active-low reset only, 16µA supply current, 200ms tPOR, supports manual reset. | Higher supply current and single-reset architecture limit use in battery-powered or dual-domain systems. | Choose if TI ecosystem preference exists and complementary outputs are not required; verify reset timing compatibility with target µP. |
Compared with MAX6326UR26-T and TPS3808G125DBVR, the ISL88013IH526Z-TK uniquely delivers watchdog timer capability, dual RST/RST outputs, and industry-leading ±1.5% threshold accuracy - making it optimal for safety-critical embedded systems requiring both supervision and runtime fault detection.
Availability
ISL88013IH526Z-TK is available at Aetrix Electronics and suitable for industrial PLC controllers, medical handheld diagnostics, automotive infotainment units, and network edge routers requiring stable component supply with long-term lifecycle support.
Supply support for ISL88013IH526Z-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
Intersil Corporation (now part of Renesas Electronics) is a leader in precision analog and power management ICs, specializing in high-reliability solutions for industrial, automotive, and computing markets.
The ISL88013IH526Z-TK belongs to the ISL8801x family of voltage supervisors designed specifically for robust, low-power, multi-function power monitoring in space-constrained embedded systems - emphasizing accuracy, transient immunity, and integrated safety features.
FAQ
What is the exact voltage threshold and accuracy of the ISL88013IH526Z-TK?
The ISL88013IH526Z-TK has a factory-programmed VDD voltage threshold of 2.63V with ±1.5% accuracy 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 (Page 6) of FN8093 Rev 5.00, where VTHVDD = 2.59V (min), 2.63V (typ), 2.67V (max) at 2.63V nominal. The ISL88013IH526Z-TK does not support adjustable VMON - only fixed VDD supervision.
Does the ISL88013IH526Z-TK include a watchdog timer, and what are its timeout values?
Yes, the ISL88013IH526Z-TK includes a watchdog timer with two distinct timeout modes: a 51s start-up timeout (to allow system boot without immediate watchdog enforcement) and a 1.6s nominal normal-mode timeout (with 1.0–2.0s range). These values are explicitly specified in the Electrical Specifications table (Page 7, Note 8) and apply only to ISL88013 and ISL88015 per the Product Features Table (Page 5). The ISL88013IH526Z-TK requires periodic WDI pin toggling to prevent reset assertion.
What are the reset output configurations supported by the ISL88013IH526Z-TK?
The ISL88013IH526Z-TK provides complementary reset outputs: RST (active-high, push-pull) and RST (active-low, open-drain). As confirmed in the Product Features Table (Page 5), both outputs are present on ISL88013 devices. RST drives to VDD during normal operation and pulls low during reset; RST remains high-impedance until reset, then pulls to GND. This dual-output architecture allows direct interfacing with processors requiring either polarity without external inverters.
Can the ISL88013IH526Z-TK monitor a second voltage rail, such as a 3.3V supply?
No - the ISL88013IH526Z-TK monitors only the VDD pin at its fixed 2.63V threshold and does not support dual-voltage supervision or adjustable VMON input. Unlike ISL88012/ISL88014/ISL88015, the ISL88013 variant lacks a VMON pin (Pin 3 is RST, not VMON); its Pin 5 is WDI, not CPOR or VMON. Therefore, it cannot monitor a separate 3.3V rail. For dual-rail monitoring, ISL88012IH533Z-TK (3.3V + adjustable) or ISL88014IH5Z-TK would be appropriate alternatives.
What is the minimum operating voltage and reset validity range for the ISL88013IH526Z-TK?
The ISL88013IH526Z-TK operates from 2.0V to 5.5V (Absolute Maximum Ratings, Page 6), and its reset outputs remain valid down to VDD = 1V - meaning RST and RST retain correct logic states and drive strength even during deep brownout conditions. This is explicitly stated in the Features list (Page 1) and confirmed in the Functional Block Diagrams section (Page 4). The ISL88013IH526Z-TK continues asserting reset until VDD recovers above 2.63V and sustains that level for 200ms.
ISL88013IH526Z-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:
- 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-TK FAQ
1.How can I place an order for ISL88013IH526Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88013IH526Z-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 ISL88013IH526Z-TK reliable?
The price and inventory of ISL88013IH526Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88013IH526Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88013IH526Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88013IH526Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88013IH526Z-TK?
ISL88013IH526Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88013IH526Z-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 ISL88013IH526Z-TK?
For technical support, including ISL88013IH526Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88013IH526Z-TK requirements.
6.How does Aetrix verify that ISL88013IH526Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88013IH526Z-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 ISL88013IH526Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88013IH526Z-TK?
All ISL88013IH526Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88013IH526Z-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 ISL88013IH526Z-TK part is unused and in its original packaging.
Return procedure for ISL88013IH526Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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