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Renesas ISL88012IH522Z-TK
- Part No.:
- ISL88012IH522Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH522Z-TK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
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Product details
Overview
ISL88012IH522Z-TK from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 2.19V VDD monitoring and user-adjustable VMON monitoring down to 0.6V. It delivers complementary active-low (RST) and active-high (RST) reset outputs, 200ms power-on reset timeout, ±1.5% threshold accuracy over temperature, and ultra-low 5.5µA supply current - used for reliable µP power sequencing in battery-powered embedded systems.
For engineers reviewing the ISL88012IH522Z-TK datasheet, ISL88012IH522Z-TK pinout, ISL88012IH522Z-TK application, or ISL88012IH522Z-TK equivalent, key selection criteria include dual-supply monitoring capability, adjustable VMON trip point, complementary reset outputs, POR timeout stability across voltage and temperature, and compatibility with low-power industrial microcontrollers requiring brownout immunity down to VDD = 1V.
Technical Context
The ISL88012IH522Z-TK integrates two independent voltage monitoring paths: one compares VDD against a factory-trimmed 2.19V threshold (±1.5% over −40°C to +85°C), while the other compares VMON against an internal 600mV reference, enabling custom monitoring of any supply ≥0.6V via external resistor divider. Both paths drive synchronized reset assertion with 200ms timeout and hysteresis (22mV at 2.19V).
It supports manual reset via debounced RST/MR pin (active-low, <100mV threshold, 1µs minimum pulse), asserts valid reset signals even at VDD = 1V, and features push-pull RST and open-drain RST outputs - eliminating need for external pull-ups on RST while allowing flexible logic-level interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.19V ±1.5% - factory-trimmed fixed trip point for primary supply monitoring |
| VMON Threshold | 0.6V nominal - user-adjustable down to 0.6V; settable higher via resistor divider per Equation 1 |
| POR Timeout | 200ms typical - ensures stable power-up before releasing reset to µP/FPGA |
| Supply Current | 5.5µA typical at VDD = 2.5V - enables multi-year operation in coin-cell–powered devices |
| Reset Outputs | Complementary RST (push-pull high) and RST (open-drain low) - supports direct interface to both CMOS and TTL inputs |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded control and instrumentation |
| Reset Validity | Valid down to VDD = 1V - guarantees fail-safe reset assertion during deep brownout |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS-compliant, JEDEC MO178AA / EIAJ SC-74 compliant; dimensions per P5.064 drawing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/MR | Combined manual reset input & active-low reset output | Debounced active-low MR input (<100mV threshold); open-drain RST output with internal pull-down when asserted |
| GND | Ground reference | Common return path for all internal comparators, oscillator, and output drivers |
| RST | Active-high reset output | Push-pull output driven HIGH during reset; compatible with CMOS/TTL inputs without external pull-up |
| VDD | Supply voltage & monitored input | Power source (2.0–5.5V) and primary monitored rail; compared against 2.19V fixed threshold |
| VMON | Adjustable voltage monitor input | Secondary monitored input; compared against 600mV reference; supports custom trip points ≥0.6V via resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply supervision | Simultaneous monitoring of main supply (VDD @ 2.19V) and auxiliary rail (VMON @ 0.6V+), enabling fault detection across multiple power domains |
| Complementary reset outputs | RST (push-pull) and RST (open-drain) allow direct connection to diverse µP reset inputs without level-shifting or external components |
| Ultra-low quiescent current | 5.5µA max at 2.5V enables integration into always-on battery-backed subsystems without compromising runtime |
| Factory-trimmed accuracy | ±1.5% VDD threshold tolerance over full industrial temperature range eliminates need for system-level calibration |
| Brownout-immune reset | Reset remains valid down to VDD = 1V - ensures deterministic behavior during severe undervoltage events |
Applications
| Process Control Systems | Embedded Control Systems |
|---|---|
Use Scenario: Monitoring 3.3V I/O supply and 2.19V core rail in PLC I/O modules operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Dual-supervisor ensuring both rails are within spec before enabling FPGA configuration and analog front-end sampling. Use Value: Prevents spurious register writes and ADC corruption during brownout by holding µC in reset until both supplies stabilize for ≥200ms. | Use Scenario: Power sequencing in smart sensor nodes powered by single-cell Li-ion (3.0–4.2V) with regulated 2.19V analog subsystem and 0.6V+ reference rail. IC Role / Device Role / Timing Role: Primary supervisor asserting reset if main supply drops below 2.19V or reference rail falls below user-set 1.2V threshold. Use Value: Enables precise low-voltage cutoff and graceful shutdown before battery depletion damages cell or corrupts EEPROM data. |
| Critical µP Power Monitoring | Portable/Battery-Powered Equipment |
Use Scenario: Ensuring clean boot of ARM Cortex-M4 in medical handheld device where 2.19V LDO powers the MCU core and VMON monitors 1.8V I/O rail. IC Role / Device Role / Timing Role: Dual-threshold supervisor generating synchronized RST/RST signals only after both rails exceed thresholds for 200ms. Use Value: Eliminates race conditions between core and I/O domain startup, preventing bus contention and undefined state during initialization. | Use Scenario: Supervising coin-cell–powered real-time clock (RTC) backup circuit with 2.19V main rail and adjustable 1.0V VMON threshold for RAM retention voltage. IC Role / Device Role / Timing Role: Low-current supervisor detecting RTC supply failure and triggering backup switchover before data loss. Use Value: 5.5µA supply current extends 10-year RTC battery life; ±1.5% accuracy ensures reliable low-voltage warning at end-of-life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88014IH5Z-TK | No fixed VDD threshold; VMON adjustable from 0.6V; requires external resistor network to set both trip points | Lacks factory-trimmed 2.19V VDD monitor - suitable only when both rails require user-defined thresholds | Select when flexibility to set both thresholds > guaranteed accuracy on primary rail |
| MAX6326UR23-T | Single 2.32V fixed threshold; no VMON input; 200ms POR; 1.6µA supply current | Monitors only one rail; lacks dual-supply capability and adjustable monitoring | Select only for cost-sensitive single-rail applications where secondary rail supervision is unnecessary |
Compared with ISL88014IH5Z-TK and MAX6326UR23-T, the ISL88012IH522Z-TK uniquely combines factory-accurate 2.19V VDD supervision with user-configurable VMON monitoring in one ultra-low-power package - making it irreplaceable for designs requiring guaranteed accuracy on one rail and flexibility on another.
Availability
ISL88012IH522Z-TK is available at Aetrix Electronics and suitable for process control systems, embedded control systems, and critical µP power monitoring requiring stable component supply despite its legacy status.
Supply support for ISL88012IH522Z-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 is a provider of precision analog and power management ICs, now part of Renesas Electronics, with focus on industrial, infrastructure, and embedded applications.
The ISL88012IH522Z-TK belongs to the ISL8801x family of voltage supervisors designed specifically for low-power, high-accuracy dual-rail monitoring in space-constrained industrial and portable electronics.
FAQ
What is the exact VDD reset threshold voltage for ISL88012IH522Z-TK?
The ISL88012IH522Z-TK has a factory-programmed VDD reset threshold of 2.19V, with ±1.5% accuracy over the full −40°C to +85°C industrial temperature range. This value is confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00, where VTHVDD = 2.16V (min), 2.19V (typ), 2.22V (max) for the IH522Z variant. The ISL88012IH522Z-TK does not support adjustment of this fixed threshold.
Does ISL88012IH522Z-TK support watchdog timer functionality?
No, the ISL88012IH522Z-TK does not include a watchdog timer. According to the Product Features Table (page 5) and Functional Block Diagrams (page 4), watchdog timer capability is exclusive to ISL88013 and ISL88015. The ISL88012IH522Z-TK provides dual voltage monitoring, manual reset, and power-on reset - but no WDI pin or watchdog timing circuitry.
Can ISL88012IH522Z-TK monitor a 1.2V supply using the VMON pin?
Yes, the ISL88012IH522Z-TK can monitor a 1.2V supply via the VMON pin by configuring an external resistor divider. As specified in Note 2 (page 3) and Equation 1 (page 9), the default 600mV trip point is adjustable upward; for a 1.2V target, use R1 and R2 such that VIN × R2/(R1+R2) = 0.6V. The ISL88012IH522Z-TK's VMON input supports trip points ≥0.6V, making 1.2V fully achievable and stable across temperature.
What is the function of the RST/MR pin on ISL88012IH522Z-TK?
The RST/MR pin on ISL88012IH522Z-TK serves a dual role: it functions as an active-low manual reset input (MR) with debounced <100mV threshold and 1µs minimum pulse width, and as an open-drain active-low reset output (RST). When asserted, it pulls low to signal reset; when released, it remains high-impedance. This pin allows push-button reset initiation while sharing the same terminal as one of the two reset outputs - reducing PCB footprint versus separate pins.
Is ISL88012IH522Z-TK still in production or supported by the manufacturer?
No, the ISL88012IH522Z-TK is marked "No longer available or supported" in the official Ordering Information table (page 3) of FN8093 Rev 5.00. While Aetrix Electronics maintains legacy supply channels for this part, design-ins should consider migration paths such as ISL88013IH522Z-TK (with watchdog) or newer Renesas alternatives. Technical documentation and parametric data for ISL88012IH522Z-TK remain valid per the final revision of the datasheet.
ISL88012IH522Z-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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.19V, Adj
- 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
ISL88012IH522Z-TK FAQ
1.How can I place an order for ISL88012IH522Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH522Z-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 ISL88012IH522Z-TK reliable?
The price and inventory of ISL88012IH522Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH522Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88012IH522Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH522Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH522Z-TK?
ISL88012IH522Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH522Z-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 ISL88012IH522Z-TK?
For technical support, including ISL88012IH522Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH522Z-TK requirements.
6.How does Aetrix verify that ISL88012IH522Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88012IH522Z-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 ISL88012IH522Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88012IH522Z-TK?
All ISL88012IH522Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH522Z-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 ISL88012IH522Z-TK part is unused and in its original packaging.
Return procedure for ISL88012IH522Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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