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Renesas ISL88012IH523Z-TK
- Part No.:
- ISL88012IH523Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH523Z-TK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,592
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Product details
Overview
ISL88012IH523Z-TK from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 2.32V VDD monitoring and user-adjustable VMON threshold down to 0.6V. It delivers complementary active-low (RST) and active-high (RST) reset outputs, 200ms power-on reset timeout, manual reset input, and ultra-low 5.5µA supply current - used for reliable µP power sequencing in battery-powered instrumentation.
For engineers reviewing the ISL88012IH523Z-TK datasheet, ISL88012IH523Z-TK pinout, ISL88012IH523Z-TK application, or ISL88012IH523Z-TK equivalent, key selection criteria include its dual-supply monitoring capability, ±1.5% voltage threshold accuracy over –40°C to +85°C, reset validity down to VDD = 1V, immunity to supply transients, and Pb-free SOT-23 package compatibility with automated assembly.
Technical Context
The ISL88012IH523Z-TK integrates two independent voltage monitoring paths: one compares VDD against a factory-trimmed 2.32V threshold (±1.5%), while the other compares VMON against an internal 600mV reference, adjustable upward via external resistor divider. Both paths feed into a shared reset logic block that asserts complementary RST/RST outputs upon violation.
It supports manual reset assertion via debounced RST/MR pin, maintains reset assertion for 200ms after recovery (tPOR), and guarantees valid reset signaling even as VDD drops to 1V - enabling robust brownout protection in low-voltage embedded systems without requiring external pull-ups on reset lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.32V ±1.5% - factory-trimmed trip point for primary supply monitoring, stable across –40°C to +85°C |
| VMON Threshold | 0.6V nominal, adjustable above via resistor divider - enables custom monitoring of any rail ≥0.6V |
| POR Timeout | 200ms typical - ensures microprocessor remains held in reset until supply stabilizes post-power-up |
| Supply Current | 5.5µA at VDD = 3.3V - enables multi-year operation in coin-cell–powered devices |
| Reset Validity | Down to VDD = 1V - guarantees clean reset assertion during deep brownout conditions |
| Output Types | Complementary RST (push-pull high) and RST (open-drain low) - simplifies interface to diverse logic families |
| Hysteresis | 23mV at 2.32V threshold - prevents chatter near trip point under noisy supply conditions |
Pinout & Package
ISL88012IH523Z-TK uses a 5-lead Pb-free SOT-23 package (JEDEC MO178AA, Intersil pkg drawing P5.064), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads and 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined manual reset input / active-low reset output | Debounced active-low input accepts push-button or controller signal; open-drain output pulls low during reset |
| 2 - GND | Ground reference | Common return path for all internal circuits and reset outputs |
| 3 - RST | Active-high reset output | Push-pull output driven to VDD during reset; requires no external pull-up |
| 4 - VDD | Supply input and monitored rail | Power source and primary voltage sense node; trip point = 2.32V ±1.5% |
| 5 - VMON | Adjustable voltage monitor input | Compares external voltage (via resistor divider) against 600mV reference; supports thresholds ≥0.6V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneously monitors VDD at 2.32V and user-defined VMON rail - eliminates need for two discrete supervisors |
| Complementary RST and RST outputs | Reduces BOM count by supporting both active-high and active-low reset logic without level-shifting components |
| Manual reset with debounce | RST/MR pin includes internal filtering - removes need for external RC debounce circuitry |
| Ultra-low quiescent current | 5.5µA max at 3.3V enables integration into always-on subsystems without compromising battery life |
| Reset validity to 1V supply | Ensures deterministic reset behavior during severe brownout - critical for fail-safe shutdown in portable equipment |
Applications
| Battery-Powered Instrumentation | Industrial Microcontroller Supervision |
|---|---|
Use Scenario: Handheld multimeter powered by two AA cells, requiring stable reset during battery discharge from 3.2V to 1.8V. IC Role / Device Role / Timing Role: Dual supervisor monitors main 3.3V rail (VDD) and analog reference rail (VMON) to prevent erroneous measurements during voltage sag. Use Value: 2.32V VDD threshold and 0.6V-adjustable VMON ensure reset remains asserted until both rails exceed safe operating levels - eliminating corrupted ADC readings. | Use Scenario: PLC I/O module with isolated µC, where power integrity must be verified before fieldbus initialization. IC Role / Device Role / Timing Role: Provides POR hold-off and continuous VDD/VMON monitoring to gate firmware execution until 5V and 3.3V supplies stabilize. Use Value: Complementary RST/RST outputs directly drive µC reset and FPGA configuration enable pins - reducing layout complexity and improving timing margin. |
| Embedded Medical Sensor Node | Portable Data Logger |
Use Scenario: Wearable ECG sensor using coin cell, needing guaranteed reset during cold-start and low-battery conditions. IC Role / Device Role / Timing Role: Monitors 2.8V LDO output (VDD) and 1.8V sensor bias rail (VMON) with hysteresis to avoid false resets from transient noise. Use Value: 23mV hysteresis at 2.32V and reset validity down to VDD = 1V ensure reliable startup and brownout recovery - meeting IEC 60601 safety requirements. | Use Scenario: Environmental logger recording temperature/humidity every 10 seconds, powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Supervises main 3.3V system rail and backup real-time clock (RTC) 3.0V rail to prevent data corruption during power transitions. Use Value: Adjustable VMON allows precise 3.0V RTC monitoring while fixed 2.32V VDD threshold covers core logic - enabling single-IC dual-rail protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR23+T | Fixed 2.32V VDD monitor only; no VMON input - single-rail supervision only | Lacks adjustable secondary monitoring; suitable only when only one rail requires supervision | Select if cost sensitivity outweighs need for dual-rail coverage and board space permits separate VMON supervisor |
| TPS3808G125DBVR | Adjustable VDD threshold (via external resistor); no dedicated VMON pin - requires external divider on VDD | Cannot independently monitor two distinct rails; less accurate for low-voltage VMON tracking | Choose when flexibility in primary rail threshold is prioritized over independent secondary rail monitoring |
Compared with MAX6326XR23+T and TPS3808G125DBVR, the ISL88012IH523Z-TK uniquely provides simultaneous fixed-VDD and adjustable-VMON supervision in one SOT-23 package - delivering true dual-rail protection without external components or accuracy trade-offs.
Availability
ISL88012IH523Z-TK is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial microcontroller supervision, and portable data loggers requiring stable component supply despite end-of-life status.
Supply support for ISL88012IH523Z-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) designs precision analog and power management ICs for industrial, infrastructure, and high-end consumer markets.
The ISL88012IH523Z-TK belongs to the ISL8801x family of voltage supervisors engineered for low-power, high-accuracy power sequencing in space-constrained embedded systems - emphasizing threshold stability, reset reliability, and minimal footprint.
FAQ
What is the exact VDD voltage threshold for ISL88012IH523Z-TK?
The ISL88012IH523Z-TK has a factory-programmed VDD threshold of 2.32V with ±1.5% accuracy over –40°C to +85°C, as confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00. This value is laser-trimmed and applies specifically to the ISL88012IH523Z-TK variant - not inferred from adjacent part numbers.
Does ISL88012IH523Z-TK support adjustable power-on reset timeout?
No, the ISL88012IH523Z-TK does not support adjustable POR timeout. Unlike ISL88011/ISL88014 which feature CPOR pin functionality, ISL88012 uses a fixed 200ms tPOR delay. This is explicitly stated in the Product Features Table (page 5) and Principles of Operation (page 9), where CPOR capability is marked "x" only for ISL88011 and ISL88014.
What is the function of the VMON pin on ISL88012IH523Z-TK?
The VMON pin on ISL88012IH523Z-TK serves as a user-adjustable voltage monitor input referenced to an internal 600mV threshold. When connected to a resistor divider, it enables monitoring of any external rail ≥0.6V - for example, setting a 3.0V trip point for a secondary supply. This capability is documented in the Pin Descriptions (page 5), Electrical Specifications (page 6), and Figure 2 of FN8093 Rev 5.00.
Can ISL88012IH523Z-TK generate both active-high and active-low reset signals?
Yes, ISL88012IH523Z-TK provides complementary reset outputs: RST (active-high, push-pull) and RST (active-low, open-drain). This is confirmed in the Product Features Table (page 5), Pin Descriptions (page 5), and Functional Block Diagram (page 4) of FN8093 Rev 5.00. The dual outputs eliminate need for external inverters or level shifters when interfacing with mixed-logic systems.
Is ISL88012IH523Z-TK still in production or supported?
No, ISL88012IH523Z-TK is marked "No longer available or supported" in the Ordering Information table (page 3) of FN8093 Rev 5.00. While functional and fully specified, it is obsolete - Aetrix Electronics provides last-time-buy support, traceable legacy stock, and technical continuity guidance for migration to active alternatives like ISL88011IH523Z-TK or modern equivalents.
ISL88012IH523Z-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:
- 2.32V, 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
ISL88012IH523Z-TK FAQ
1.How can I place an order for ISL88012IH523Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH523Z-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 ISL88012IH523Z-TK reliable?
The price and inventory of ISL88012IH523Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH523Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88012IH523Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH523Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH523Z-TK?
ISL88012IH523Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH523Z-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 ISL88012IH523Z-TK?
For technical support, including ISL88012IH523Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH523Z-TK requirements.
6.How does Aetrix verify that ISL88012IH523Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88012IH523Z-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 ISL88012IH523Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88012IH523Z-TK?
All ISL88012IH523Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH523Z-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 ISL88012IH523Z-TK part is unused and in its original packaging.
Return procedure for ISL88012IH523Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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