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Renesas ISL88012IH523Z-T7A
- Part No.:
- ISL88012IH523Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH523Z-T7A.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,118
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Product details
Overview
ISL88012IH523Z-T7A from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 package, providing fixed 2.32V VDD monitoring and user-adjustable VMON input down to 0.6V, ±1.5% threshold accuracy, 200ms power-on reset timeout, and complementary active-low (RST) and active-high (RST) reset outputs. It supports critical µP power sequencing in embedded control systems.
For engineers reviewing the ISL88012IH523Z-T7A datasheet, ISL88012IH523Z-T7A pinout, ISL88012IH523Z-T7A application, or ISL88012IH523Z-T7A equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options for industrial and portable system designs.
Technical Context
The ISL88012IH523Z-T7A integrates two independent voltage supervision paths: one factory-trimmed at 2.32V on VDD with 23mV hysteresis, and a second adjustable path on VMON referenced to an internal 600mV comparator. Reset assertion occurs when either input falls below its trip point and remains asserted for 200ms after recovery.
It features dual reset outputs (open-drain RST/MR and push-pull RST), manual reset debouncing, and operates from 2.0V to 5.5V supply while consuming only 5.5µA at 2.5V. Reset validity extends down to VDD = 1V, ensuring reliable brownout detection during power ramp-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.32V ±1.5% over -40°C to +85°C - ensures precise 2.3V rail monitoring without external calibration |
| VMON Threshold | 0.6V nominal, adjustable via resistor divider - enables custom monitoring of any supply ≥0.6V |
| POR Timeout | 200ms typical - holds microprocessor in reset until power stabilizes post-power-up |
| Supply Current | 5.5µA at 2.5V - supports ultra-low-power battery-backed systems |
| Reset Output Types | Complementary RST (push-pull high) and RST/MR (open-drain low) - simplifies interface to diverse logic families |
| Operating Voltage | 2.0V to 5.5V - compatible with 2.5V, 3.3V, and 5V system rails |
| Reset Validity | Down to VDD = 1V - guarantees reset assertion during deep brownout conditions |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined open-drain reset output & manual reset input | Asserts low on power failure or button press; debounced, active-low MR accepts <100mV pulse ≥1µs |
| 2 - GND | Ground reference | Common return for all internal comparators and reset drivers |
| 3 - RST | Active-high push-pull reset output | Drives high (VDD–0.4V) when not asserting reset; sinks 0.5mA max when low |
| 4 - VDD | Supply input and primary monitored voltage | Supplies device and provides 2.32V fixed-threshold supervision; valid from 1V to 5.5V |
| 5 - VMON | Adjustable voltage monitor input | Compares external voltage against 600mV reference; supports resistor-divider scaling for custom thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supervision architecture | Simultaneously monitors fixed 2.32V VDD rail and user-defined VMON voltage - eliminates need for two discrete supervisors |
| ±1.5% threshold accuracy over temp | Reduces design margin requirements and avoids recalibration across industrial temperature range (-40°C to +85°C) |
| Complementary reset outputs | RST (push-pull high) and RST/MR (open-drain low) enable direct connection to both CMOS and TTL inputs without level-shifting |
| Ultra-low 5.5µA quiescent current | Extends battery life in portable equipment and enables always-on supervision in energy-constrained IoT nodes |
| Reset valid down to 1V VDD | Ensures fail-safe behavior during gradual power collapse - prevents processor runaway during undervoltage transients |
Applications
| Industrial PLC Power Sequencing | Battery-Powered Medical Sensor Node |
|---|---|
Use Scenario: Monitoring 2.3V LDO output and 3.3V MCU core rail in programmable logic controller backplane. IC Role / Device Role / Timing Role: Dual-supervisor enforces strict power-up order and detects brownout on both rails before enabling FPGA configuration. Use Value: Prevents corrupted state machine initialization by holding reset until both supplies exceed 2.32V and scaled 3.3V threshold for 200ms. |
Use Scenario: Supervising coin-cell-powered ECG front-end ASIC and BLE radio subsystem. IC Role / Device Role / Timing Role: ISL88012IH523Z-T7A monitors main 2.3V supply and scales VMON to detect 1.8V rail collapse using 100k/68k divider. Use Value: 5.5µA supply current minimizes standby drain; 1V reset validity ensures clean shutdown before battery depletion. |
| Embedded Automotive Telematics Module | Handheld Test Instrument Power Management |
Use Scenario: Validating 2.3V CAN transceiver supply and 5V analog sensor bias rail in vehicle OBD-II adapter. IC Role / Device Role / Timing Role: Fixed VDD threshold guards against ignition-switched supply ripple; VMON tracks scaled 5V rail via resistor network. Use Value: ±1.5% accuracy eliminates need for trimming resistors; hysteresis prevents chatter during engine cranking transients. |
Use Scenario: Ensuring stable operation of precision ADC and LCD controller in portable multimeter. IC Role / Device Role / Timing Role: ISL88012IH523Z-T7A asserts reset if main 2.3V rail dips below 2.29V or VMON-scaled 3.3V rail drops below 3.27V. Use Value: Complementary RST/RST outputs drive separate reset domains for analog and digital subsystems without external inverters. |
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-T7A | No fixed VDD threshold; VMON adjustable only; no RST output (RST/MR only); 4.5µA supply current | Lacks dedicated 2.32V monitoring - requires external resistor divider on VMON to emulate fixed threshold | Choose when only one adjustable rail needs supervision and lowest possible current (4.5µA) is critical |
| MAX6326XR23+T | Single 2.32V supervisor; no VMON input; 3-pin SOT-23; 1.6µA supply current; 200ms POR | Provides only fixed 2.32V monitoring - cannot supervise secondary voltage without adding discrete components | Choose when only VDD supervision is required and board space is constrained to 3-pin footprint |
Compared with ISL88012IH523Z-T7A, ISL88014IH5Z-T7A reduces current but sacrifices fixed-threshold simplicity, while MAX6326XR23+T saves space and power but eliminates dual-rail capability - selection depends on whether adjustable VMON supervision is mandatory.
Availability
ISL88012IH523Z-T7A is available at Aetrix Electronics and suitable for industrial PLC power sequencing, battery-powered medical sensor nodes, embedded automotive telematics modules, and handheld test instrument power management requiring stable component supply despite end-of-life status.
Supply support for ISL88012IH523Z-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
Intersil Corporation is a provider of precision analog and power management ICs, acquired by Renesas Electronics in 2017. Its products target industrial, infrastructure, and high-reliability embedded systems.
The ISL88012IH523Z-T7A belongs to the ISL8801x family of voltage supervisors designed specifically for low-power, high-accuracy dual-rail monitoring in space-constrained embedded applications where reliability under brownout conditions is critical.
FAQ
What is the exact voltage threshold for VDD monitoring on the ISL88012IH523Z-T7A?
The ISL88012IH523Z-T7A has a factory-programmed VDD threshold of 2.32V, specified 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 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00, where VTHVDD = 2.29V (min), 2.32V (typ), 2.35V (max) for part marking AHK.
Does the ISL88012IH523Z-T7A support adjustable power-on reset timeout?
No, the ISL88012IH523Z-T7A does not support adjustable POR timeout. Unlike ISL88011 and ISL88014, it lacks a CPOR pin. Its power-on reset timeout is fixed at 200ms (typical), as stated in the Electrical Specifications table (page 7) under tPOR for ISL88012. The CPOR pin is absent from the ISL88012 pinout shown on page 2.
What is the function of the VMON pin on the ISL88012IH523Z-T7A?
The VMON pin on the ISL88012IH523Z-T7A is an adjustable voltage monitor input referenced to an internal 600mV comparator. When used with an external resistor divider, it allows supervision of any voltage ≥0.6V. Per Note 2 (page 4), the default trip point is 0.6V if no resistors are connected; the datasheet confirms VTHVMON = 597–603–609mV for this part number (page 7).
Can the ISL88012IH523Z-T7A be used in place of ISL88011IH523Z-T7A?
No - ISL88012IH523Z-T7A and ISL88011IH523Z-T7A are not interchangeable. ISL88011IH523Z-T7A is a single-supervisor with only VDD monitoring (2.32V) and CPOR pin for adjustable POR; ISL88012IH523Z-T7A adds VMON for dual supervision but removes CPOR. Pinouts differ: ISL88011 uses pins 1–5 as RST/MR, GND, RST, VDD, CPOR; ISL88012 uses RST/MR, GND, RST, VDD, VMON.
Is the ISL88012IH523Z-T7A still in production?
No - the ISL88012IH523Z-T7A is marked "No longer available or supported" in the official Ordering Information table (page 3, FN8093 Rev 5.00). While Aetrix Electronics maintains limited legacy stock and supply support, new designs should consider alternatives like ISL88014IH5Z-T7A or MAX6326XR23+T, as confirmed in the datasheet's status notes.
ISL88012IH523Z-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:
- 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-T7A FAQ
1.How can I place an order for ISL88012IH523Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH523Z-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 ISL88012IH523Z-T7A reliable?
The price and inventory of ISL88012IH523Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH523Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88012IH523Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH523Z-T7A transactions.
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4.How is shipping managed for ISL88012IH523Z-T7A?
ISL88012IH523Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH523Z-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 ISL88012IH523Z-T7A?
For technical support, including ISL88012IH523Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH523Z-T7A requirements.
6.How does Aetrix verify that ISL88012IH523Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88012IH523Z-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 ISL88012IH523Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88012IH523Z-T7A?
All ISL88012IH523Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH523Z-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 ISL88012IH523Z-T7A part is unused and in its original packaging.
Return procedure for ISL88012IH523Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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