Toshiba Semiconductor and Storage TC75W58FU,LF

Overview

TC75W58FU,LF from Toshiba is a CMOS dual comparator IC with open-drain outputs, designed for single-supply operation (1.8–7.0 V), ultra-low supply current (22 μA typ. at 5 V), and wide common-mode input range (VSS to VDD−0.9 V). It serves as a precision voltage comparison element in battery-powered sensors, level-shifted interface monitoring, and analog threshold detection circuits.

For engineers reviewing the TC75W58FU,LF datasheet, TC75W58FU,LF pinout, TC75W58FU,LF application, or TC75W58FU,LF equivalent, key selection criteria include its 230 ns turn-off propagation delay at 100 mV overdrive, ±1 mV typical input offset voltage, open-drain output compatibility with wired-OR logic, and SSOP8-P-0.65 package footprint.

Technical Context

The TC75W58FU,LF integrates two independent high-impedance CMOS comparators sharing a common supply rail. Each channel features picoampere-level input bias current (1 pA typ.) and supports rail-to-rail common-mode input down to VSS, enabling direct sensing of low-side current shunts or ground-referenced signals.

Its open-drain output stage requires external pull-up for logic-level translation and enables direct connection to mixed-voltage buses (e.g., 3.3 V logic driving 5 V bus) without level-shifting components. Propagation delays are specified under controlled overdrive conditions (100 mV), with tPHL = 230 ns (min) and tPLH = 800 ns (max) at VDD = 5 V.

Key Specifications

Pinout & Package

TC75W58FU,LF is housed in an SSOP8-P-0.65 package (0.65 mm lead pitch, 8-pin shrink small outline package), measuring 3.0 × 4.4 × 1.2 mm (typ.), with a typical weight of 0.021 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator applications.

Compared with LM393DR and TLV3702IDR, TC75W58FU,LF uniquely balances nanoamp-level input bias, open-drain configurability, and sub-25 μA supply current-making it optimal for battery-critical, multi-threshold, and bus-shared comparator functions where layout simplicity and energy efficiency are primary constraints.

Availability

TC75W58FU,LF is available at Aetrix Electronics and suitable for battery management systems, industrial sensor interfaces, LED driver control, and portable medical devices requiring stable component supply across long production lifecycles.

Supply support for TC75W58FU,LF 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

Toshiba Electronic Devices & Storage Corporation designs and manufactures high-reliability semiconductor solutions for industrial, automotive, and consumer applications, with emphasis on energy efficiency and miniaturization.

The TC75W58FU,LF belongs to Toshiba's CMOS Linear IC family, engineered specifically for ultra-low-power analog signal conditioning in space- and energy-constrained embedded systems.

FAQ

What is the maximum operating supply voltage for TC75W58FU,LF?

The TC75W58FU,LF supports a maximum supply voltage of 7.0 V, as specified in its absolute maximum ratings. Operation above this voltage risks permanent damage. At VDD = 7.0 V, the device maintains full functionality including open-drain output sinking capability and common-mode input range up to VDD−0.9 V (6.1 V), making TC75W58FU,LF suitable for 5 V and 6 V industrial rails with margin.

Does TC75W58FU,LF require external pull-up resistors on its outputs?

Yes, TC75W58FU,LF features open-drain outputs and requires external pull-up resistors to establish a defined HIGH logic level. The value depends on bus capacitance and speed requirements; typical values range from 4.7 kΩ (for 5 V logic) to 10 kΩ (for low-power 3.3 V systems). Without pull-ups, TC75W58FU,LF outputs remain floating and cannot drive standard logic inputs reliably.

Can TC75W58FU,LF operate from a 1.8 V supply?

Yes, TC75W58FU,LF is fully specified down to 1.8 V supply voltage, with tested performance including 40 μA typical supply current and 2.1 V common-mode input range at VDD = 3 V. At 1.8 V, it retains functional comparators and open-drain outputs, though sink current and propagation delay degrade slightly-confirming TC75W58FU,LF as viable for ultra-low-voltage IoT endpoints where other comparators fail to start.

What is the input offset voltage specification for TC75W58FU,LF?

The TC75W58FU,LF has a typical input offset voltage of ±1 mV and a maximum of ±7 mV over temperature and process variation. This specification is measured at VDD = 5 V and Ta = 25°C, and remains stable across its operating temperature range (−40°C to +85°C). The low offset enables accurate threshold detection in TC75W58FU,LF-based voltage supervisors and sensor zero-crossing detectors.

Is TC75W58FU,LF pin-compatible with TC75W58FK?

No, TC75W58FU,LF and TC75W58FK are not pin-compatible. TC75W58FU,LF uses the SSOP8-P-0.65 package (0.65 mm pitch), while TC75W58FK uses SSOP8-P-0.50A (0.50 mm pitch). Though functionally identical, their land patterns differ, requiring separate PCB footprints. TC75W58FU,LF cannot be substituted for TC75W58FK without board redesign, and vice versa.