My Inquiry
My Account
Renesas ISL88012IH531Z-TK
- Part No.:
- ISL88012IH531Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH531Z-TK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,288
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL88012IH531Z-TK from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 3.09V VDD monitoring and user-adjustable VMON input down to 0.6V for secondary supply supervision. It delivers complementary active-low (RST) and active-high (RST) reset outputs, 200ms power-on reset timeout, manual reset input, and operates with ultra-low 5.5µA supply current - used in embedded microcontroller power sequencing and brownout protection.
For engineers reviewing the ISL88012IH531Z-TK datasheet, ISL88012IH531Z-TK pinout, ISL88012IH531Z-TK application, or ISL88012IH531Z-TK equivalent, key selection considerations include its dual-threshold architecture (fixed + adjustable), ±1.5% voltage threshold accuracy over temperature, reset validity down to VDD = 1V, immunity to supply transients, and compatibility with low-power portable systems requiring reliable POR and manual reset capability.
Technical Context
The ISL88012IH531Z-TK integrates two independent voltage monitoring paths: one compares VDD against a factory-programmed 3.09V trip point (±1.5% tolerance), while the second monitors VMON against an internal 600mV reference, configurable via external resistor divider for custom thresholds ≥0.6V. Both paths feed into a shared reset logic block that asserts complementary RST/RST outputs upon violation.
Reset assertion is synchronized with power-on conditions (tPOR = 200ms nominal), manual reset activation (MR pin debounced, <100mV threshold), and maintains output validity down to VDD = 1V. The device uses hysteresis (31mV at 3.09V) to prevent chatter during voltage recovery and draws only 5.5µA typical supply current at 3.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 3.09V ±1.5% - factory-trimmed fixed trip point for primary supply monitoring |
| VMON Threshold | 0.6V nominal (adjustable ≥0.6V) - internal reference enables custom secondary voltage supervision |
| POR Timeout | 200ms typical - ensures stable power before releasing reset to microcontroller |
| Supply Current | 5.5µA typical at 3.3V - enables long battery life in portable equipment |
| Reset Outputs | Complementary RST (push-pull high) and RST (open-drain low) - supports mixed-logic interface requirements |
| Operating Range | -40°C to +85°C - qualified for industrial temperature environments |
| Reset Validity | Down to VDD = 1V - guarantees functional reset behavior during deep brownout |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74 compatible).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined active-low reset output & manual reset input | Open-drain RST output; debounced MR input triggers reset when pulled below 100mV for ≥1µs |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external bias networks |
| 3 - RST | Active-high push-pull reset output | Drives high to VDD during normal operation; pulls low during reset assertion |
| 4 - VDD | Supply voltage and monitored primary input | Power source (2.0–5.5V) and input for fixed 3.09V threshold comparison |
| 5 - VMON | User-adjustable voltage monitor input | Compares external voltage (via resistor divider) against 600mV reference for secondary supply supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual voltage supervision | Simultaneous monitoring of fixed 3.09V VDD rail and user-configurable VMON rail ≥0.6V |
| ±1.5% threshold accuracy | Guaranteed over full -40°C to +85°C range - eliminates need for external calibration |
| Complementary reset outputs | RST (push-pull) and RST (open-drain) enable direct interface with diverse logic families and pull-up configurations |
| Ultra-low quiescent current | 5.5µA typical at 3.3V - reduces system standby power and extends battery runtime |
| Reset validity to 1V VDD | Ensures deterministic reset behavior even during severe brownout conditions |
| Transient immunity | Internal filtering prevents false resets from short-duration supply noise or glitches |
Applications
| Microcontroller Power Sequencing | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Ensuring safe startup and shutdown of ARM Cortex-M or PIC microcontrollers in handheld test equipment. IC Role / Device Role / Timing Role: Dual-supervisor enforces valid VDD (3.09V) and backup rail (e.g., 1.8V via VMON) before releasing reset to CPU. Use Value: Prevents code execution under marginal voltage, avoiding corrupted flash writes or undefined peripheral states. |
Use Scenario: Monitoring main Li-ion (3.3V) and auxiliary LDO (1.2V) rails in portable gas analyzers. IC Role / Device Role / Timing Role: ISL88012IH531Z-TK asserts reset if either rail drops below threshold, halting sensor sampling and display. Use Value: Eliminates need for discrete comparators and logic gates - reduces BOM count and PCB area by >40%. |
| Industrial PLC I/O Module | Medical Point-of-Care Device |
Use Scenario: Supervising 5V fieldbus and 3.3V logic rails in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Fixed VDD monitoring guards 5V bus; VMON configured for 3.3V logic rail using 100k/68k divider. Use Value: Hysteresis (31mV) prevents oscillation during noisy industrial power transitions. |
Use Scenario: Validating regulated 2.8V analog front-end and 1.8V digital core supplies in portable ECG monitors. IC Role / Device Role / Timing Role: ISL88012IH531Z-TK provides fail-safe reset with manual override via front-panel button on MR pin. Use Value: Reset remains valid down to VDD = 1V - critical for graceful shutdown during battery depletion. |
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-only supervision with adjustable POR via CPOR pin | Lacks primary 3.09V VDD monitoring - requires external resistor divider for all rails | Select when only one adjustable rail needs supervision and POR delay tuning is required |
| MAX6326UR31-T | Single 3.08V fixed threshold, no VMON input, no complementary outputs (RST only) | Provides basic POR only - cannot supervise secondary voltage or support mixed-logic interfaces | Choose for cost-sensitive, single-rail applications where dual monitoring is unnecessary |
Compared with ISL88012IH531Z-TK, ISL88014IH5Z-TK offers POR adjustability but sacrifices fixed VDD supervision, while MAX6326UR31-T reduces feature set to lowest-cost single-threshold operation - making ISL88012IH531Z-TK optimal for dual-rail systems needing both precision fixed and flexible monitoring in minimal footprint.
Availability
ISL88012IH531Z-TK is available at Aetrix Electronics and suitable for industrial control systems, portable instrumentation, and medical electronics requiring stable component supply despite end-of-life status through lifecycle management and traceable sourcing.
Supply support for ISL88012IH531Z-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-reliability embedded applications.
The ISL88012IH531Z-TK belongs to the ISL8801x family of voltage supervisors engineered for low-power, high-accuracy power sequencing in space-constrained systems - emphasizing threshold stability, transient immunity, and minimal quiescent current.
FAQ
What is the exact voltage threshold for VDD monitoring on the ISL88012IH531Z-TK?
The ISL88012IH531Z-TK has a factory-programmed VDD threshold of 3.09V with ±1.5% accuracy over the full -40°C to +85°C operating range. This value is confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00, where VTHVDD for ISL88012IH531Z-TK is specified as 3.04V (min), 3.09V (typ), and 3.14V (max).
Does the ISL88012IH531Z-TK support adjustable power-on reset timeout?
No, the ISL88012IH531Z-TK does not support adjustable POR timeout. Unlike ISL88011 and ISL88014, it lacks a CPOR pin. Its POR timeout is fixed at 200ms typical (140–260ms min/max), as documented in the Electrical Specifications table on page 7 of FN8093 Rev 5.00.
Can the ISL88012IH531Z-TK monitor a 1.2V supply using the VMON pin?
Yes, the ISL88012IH531Z-TK can monitor a 1.2V supply via VMON using an external resistor divider. With its internal 600mV reference, a 1.2V rail maps to a divider ratio of R1/R2 = 1.0 (e.g., 100kΩ/100kΩ). The datasheet confirms VMON is user-adjustable down to 0.6V, and Figure 2 explicitly shows VIN-to-VMON scaling for voltages above 0.6V.
What are the reset output types provided by the ISL88012IH531Z-TK?
The ISL88012IH531Z-TK provides complementary reset outputs: RST is a push-pull active-high output (drives to VDD or GND), and RST/MR is an open-drain active-low output (pulls to GND when asserted, requires external pull-up). This dual-output architecture supports interfacing with both TTL and CMOS logic families without level-shifting components.
Is the ISL88012IH531Z-TK still in production or supported by the manufacturer?
No - the ISL88012IH531Z-TK is marked "No longer available or supported" in the official Ordering Information table (page 3 of FN8093 Rev 5.00). While Aetrix Electronics provides legacy supply chain support, design-in of new systems should consider alternatives like ISL88014IH5Z-TK or newer Renesas supervisor families with extended availability.
ISL88012IH531Z-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:
- 3.09V, 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
ISL88012IH531Z-TK FAQ
1.How can I place an order for ISL88012IH531Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH531Z-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 ISL88012IH531Z-TK reliable?
The price and inventory of ISL88012IH531Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH531Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88012IH531Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH531Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH531Z-TK?
ISL88012IH531Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH531Z-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 ISL88012IH531Z-TK?
For technical support, including ISL88012IH531Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH531Z-TK requirements.
6.How does Aetrix verify that ISL88012IH531Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88012IH531Z-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 ISL88012IH531Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88012IH531Z-TK?
All ISL88012IH531Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH531Z-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 ISL88012IH531Z-TK part is unused and in its original packaging.
Return procedure for ISL88012IH531Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL88012IH531Z-TK Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
