Renesas ISL88014IH5Z-TK

Overview

ISL88014IH5Z-TK from Renesas (formerly Intersil) is a dual-voltage supervisor IC in a 5-lead SOT-23 package, featuring one fixed VDD monitor and one user-adjustable VMON input (trip point = 0.6V default), 200ms nominal power-on reset timeout, manual reset input (MR), and active-low/open-drain RST/MR plus active-high push-pull RST outputs. It supports critical µP power monitoring in battery-powered embedded systems.

For engineers reviewing the ISL88014IH5Z-TK datasheet, ISL88014IH5Z-TK pinout, ISL88014IH5Z-TK application, or ISL88014IH5Z-TK equivalent, key selection criteria include its dual-supply supervision capability (fixed + adjustable thresholds), ultra-low 5.5µA supply current, reset validity down to VDD = 1V, ±1.5% threshold accuracy over temperature, and CPOR-based POR timeout extension.

Technical Context

The ISL88014IH5Z-TK implements independent voltage supervision on VDD (factory-trimmed fixed threshold) and VMON (internally referenced to 600mV), with hysteresis on both inputs to prevent chatter during brownouts. Reset assertion occurs when either voltage falls below its trip point and remains asserted for tPOR (200ms nominal).

It provides complementary reset outputs: push-pull RST (active-high) and open-drain RST/MR (active-low), both valid down to VDD = 1V. The MR pin accepts debounced active-low pulses ≥1µs, while CPOR enables external capacitor-based POR timeout extension beyond 200ms - a feature shared only with ISL88011 in this family.

Key Specifications

Pinout & Package

Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74 compatible; dimensions per P5.064 drawing).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with MAX6326UT29D3+ and TPS3808G12QDBVRQ1, the ISL88014IH5Z-TK uniquely delivers dual-rail supervision (fixed + adjustable) and programmable POR timeout in the same 5-pin SOT-23 footprint - enabling compact, flexible power management where multiple supply domains require coordinated reset timing.

Availability

ISL88014IH5Z-TK is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, and embedded PLC I/O modules requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for ISL88014IH5Z-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

Renesas Electronics Corporation (acquired Intersil in 2017) is a global semiconductor leader delivering high-performance analog, power management, and embedded processing solutions for industrial, automotive, and infrastructure markets.

The ISL8801x family was designed specifically for low-power, high-accuracy voltage supervision in space-constrained embedded systems - emphasizing ultra-low current, ±1.5% threshold stability, and flexible reset architecture.

FAQ

What is the fixed voltage threshold for VDD monitoring on the ISL88014IH5Z-TK?

The ISL88014IH5Z-TK does not specify a fixed VDD threshold in its ordering information or functional description - unlike ISL88011/ISL88013 variants. Its VDD pin serves as both supply input and monitored rail, but the trip point is not preprogrammed or published for this part; only the VMON input has a defined 0.6V base threshold. Designers must rely on VMON for precise monitoring or select another variant (e.g., ISL88011IH531Z-TK) if a known fixed VDD threshold is required. The ISL88014IH5Z-TK datasheet confirms it belongs to the "user-adjustable voltage input" subgroup with no VTHVDD value listed.

Can the ISL88014IH5Z-TK monitor two different supply voltages simultaneously?

Yes, the ISL88014IH5Z-TK performs true dual-voltage supervision: VDD is monitored as the primary supply rail (with unspecified but functional fixed threshold), and VMON accepts an externally scaled voltage for secondary rail monitoring starting at 0.6V. By connecting a resistor divider to VMON, designers can monitor any voltage ≥0.6V - for example, scaling a 12V rail to 600mV using a 19,900:1 resistor ratio. Both inputs operate independently, and reset asserts if either falls below its trip point. This capability makes the ISL88014IH5Z-TK suitable for systems with mixed-voltage domains like 3.3V logic and 1.8V I/O.

How does the CPOR pin affect the power-on reset timeout of the ISL88014IH5Z-TK?

The CPOR pin on the ISL88014IH5Z-TK allows designers to extend the nominal 200ms power-on reset timeout by connecting an external capacitor to ground. For instance, a 30pF capacitor increases tPOR to approximately 2.5 seconds - providing ample time for slow-ramping supplies, FPGA configuration, or oscillator stabilization. The relationship is approximately linear per the datasheet curve (Figure 3), and stray capacitance must be minimized through careful PCB layout. Unlike ISL88012/ISL88013, the ISL88014IH5Z-TK does not include watchdog timer functionality, making CPOR its sole means of timeout adjustment.

What are the electrical characteristics of the RST and RST/MR outputs on the ISL88014IH5Z-TK?

The ISL88014IH5Z-TK provides two complementary reset outputs: RST is a push-pull active-high output (VOH = VDD–0.4V min, VOL = 0.4V max at 0.4mA), while RST/MR is an open-drain active-low output requiring an external pull-up (VOL = 0.4V max at 0.5mA). Both outputs remain valid down to VDD = 1V, and reset deassertion occurs only after VDD and VMON exceed their respective thresholds for the full tPOR period. This dual-output architecture supports direct interfacing with both TTL and CMOS logic families without level-shifting components.

Is the ISL88014IH5Z-TK RoHS compliant and lead-free?

Yes, the ISL88014IH5Z-TK is Pb-free and RoHS compliant, using 100% matte tin plate (e3 termination finish) and meeting IPC/JEDEC J-STD-020 reflow requirements for lead-free assembly. The package is classified as MSL Level 1 (unlimited floor life at ≤30°C/60% RH), and the device is rated for operation from –40°C to +85°C. Renesas documents full compliance in the FN8093 datasheet revision history and packaging notes, confirming compatibility with both SnPb and Pb-free soldering processes.