Toshiba Semiconductor and Storage TC75S57F,LF

Overview

TC75S57F,LF from Toshiba Electronic Devices & Storage Corporation is a CMOS single comparator IC designed for low-power, rail-to-rail input sensing in portable and battery-powered systems. It operates from 1.8 V to 7 V (or ±0.9 V to ±3.5 V), draws only 100 µA typical supply current, features push-pull output compatible with TTL/CMOS logic, and supports common-mode input down to VSS. It is used in voltage monitoring, threshold detection, and level-shifting circuits.

For engineers reviewing the TC75S57F,LF datasheet, TC75S57F,LF pinout, TC75S57F,LF application, or TC75S57F,LF equivalent, key selection criteria include its ultra-low IDD, wide VDD range, guaranteed push-pull drive capability, and SSOP-5 package compatibility with space-constrained PCB layouts.

Technical Context

The TC75S57F,LF implements a CMOS-input differential amplifier stage with internal biasing optimized for single-supply operation. Its input stage delivers picoampere-level bias current (1 pA typ.) and ±1 mV typical input offset voltage, enabling precision threshold detection without external trimming.

The output stage uses complementary MOS transistors in push-pull configuration-eliminating need for external pull-up resistors-and delivers ±25 mA sink/source capability at 5 V, with VOL ≤ 0.1 V and VOH ≥ 4.7 V under 5 mA load, ensuring robust logic interfacing.

Key Specifications

Pinout & Package

TC75S57F,LF is housed in a 5-pin SSOP (Shrink Small Outline Package) with 0.95 mm lead pitch, measuring 2.9 mm × 2.8 mm × 1.25 mm (typ.), optimized for compact consumer and industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV331M5X/NOPB and TLV331DBVR, the TC75S57F,LF uniquely combines push-pull output, 1.8 V minimum supply, and 1 pA input bias in SSOP-5-making it optimal for battery-critical, rail-sensing, and logic-driven comparator roles where external components must be minimized.

Availability

TC75S57F,LF is available at Aetrix Electronics and suitable for battery management, industrial safety interlocks, and portable medical device monitoring requiring stable component supply and long-term lifecycle support.

Supply support for TC75S57F,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 discrete semiconductors, power devices, and analog ICs for industrial, automotive, and consumer applications.

The TC75S57F,LF belongs to Toshiba's legacy CMOS linear comparator family, engineered for ultra-low-power, single-supply operation in portable instrumentation and energy-sensitive control systems.

FAQ

What is the maximum supply voltage rating for TC75S57F,LF?

The TC75S57F,LF has an absolute maximum supply voltage rating of ±3.5 V (dual supply) or 7 V (single supply). Operation beyond these limits risks permanent damage. For reliable long-term use, design within the recommended 1.8 V to 7 V operating range, and observe derating guidelines per Toshiba's Reliability Handbook.

Does TC75S57F,LF support rail-to-rail input operation?

Yes, the TC75S57F,LF supports a common-mode input voltage range from VSS to VDD − 0.9 V. At 3 V supply, this covers 0 V to 2.1 V; at 5 V, it covers 0 V to 4.1 V. While not full rail-to-rail (i.e., does not reach VDD), it enables near-ground and high-side sensing without external biasing networks-critical for single-supply applications.

Can TC75S57F,LF drive a standard TTL input directly?

Yes, the TC75S57F,LF's push-pull output can directly drive TTL inputs. At VDD = 5 V and Isink = 5 mA, VOL is guaranteed ≤ 0.3 V; at VOH = 4.5 V, Isource is ≥ 9 mA. These values exceed TTL logic thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V), confirming compatibility without external components.

What is the typical input offset voltage of TC75S57F,LF and how does it affect accuracy?

The TC75S57F,LF has a typical input offset voltage of ±1 mV, with a maximum of ±7 mV over temperature. This introduces a fixed voltage error between IN(+) and IN(−) at zero differential input. In precision threshold applications (e.g., ±10 mV windows), this offset must be factored into reference design or compensated via calibration-especially at extremes of temperature or supply voltage.

Is TC75S57F,LF susceptible to latch-up and how can it be prevented?

Yes, the TC75S57F,LF uses a CMOS process and is susceptible to latch-up. To prevent it, ensure no I/O pin voltage exceeds VDD or falls below VSS at any time-including during power-up/power-down. Observe proper power sequencing (VDD established before signals applied), avoid excessive noise on inputs, and use series resistors on high-impedance nodes per Toshiba's Handling Precautions guidance.