Taiwan Semiconductor Corporation TS393CD

Overview

TS393CD from STMicroelectronics is a micropower dual CMOS voltage comparator with 9 µA typical supply current per comparator, 2.7–16 V single-supply operation, and 1 pA typical input bias current. It features rail-to-rail input common-mode range including ground, 2.5 µs typical response time at 5 mV overdrive, and SO-8 packaging - used in battery-powered sensor monitoring circuits where ultra-low quiescent current and precision threshold detection are critical.

For engineers reviewing the TS393CD datasheet, TS393CD pinout, TS393CD application, or TS393CD equivalent, this page delivers verified electrical parameters, package-specific terminal mapping, real-world use cases in low-power industrial sensing, and functionally validated alternatives to LM393-based designs.

Technical Context

The TS393CD implements two independent CMOS comparators with high-impedance (10¹² Ω) inputs and open-drain outputs. Its input stage operates down to ground, enabling direct interfacing with zero-referenced sensors and resistive dividers without level-shifting.

It achieves micropower performance via optimized CMOS topology while maintaining compatibility with bipolar LM393 timing and logic-level interfaces - evidenced by matching propagation delay behavior under 5–40 mV overdrive and TTL-compatible output loading conditions.

Key Specifications

Pinout & Package

TS393CD is supplied in an SO-8 (Small Outline) plastic micropackage per JEDEC MS-012, with 1.27 mm pitch, 4.9 mm × 6.0 mm body, and 1.75 mm maximum height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TS3702IDT, TS393CD uniquely balances ultra-low I_CC, open-drain flexibility, and ground-sensing capability - making it optimal for battery-powered systems requiring both low power and interface versatility.

Availability

TS393CD is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor nodes, and portable medical devices requiring stable component supply and long-term production continuity.

Supply support for TS393CD 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The TS393 belongs to ST's precision analog comparators product line, engineered specifically for ultra-low-power sensing and threshold-detection applications in resource-constrained embedded systems.

FAQ

Can TS393CD operate from a 2.7 V single supply?

Yes. The TS393CD is fully specified for single-supply operation from 2.7 V to 16 V. At 2.7 V, it maintains 1 pA input bias current, 6.5 mV max input offset voltage, and functional open-drain outputs capable of sinking 6 mA with ≤550 mV saturation - confirmed in Table 3 of the official datasheet (Doc ID 4070 Rev 4).

Does TS393CD require external pull-up resistors on its outputs?

Yes. Both outputs are open-drain NMOS structures and must be pulled up to a valid logic-high voltage (≤V_CC) via external resistors. Typical values range from 4.7 kΩ to 100 kΩ depending on speed and bus capacitance; the device itself does not integrate pull-up circuitry.

Is TS393CD pin-compatible with LM393 in SO-8 packages?

Yes. TS393CD uses the same SO-8 pinout as LM393DR and LM393DT: pins 1–3 and 5–7 map identically for inputs and outputs, pin 4 is GND, and pin 8 is V_CC. No PCB redesign is needed for drop-in replacement in existing LM393 layouts.

What is the maximum input voltage allowed when V_CC = 3 V?

Per Absolute Maximum Ratings (Table 1), the input voltage (V_in) may reach up to 18 V regardless of supply - but only if the common-mode voltage [V_icm = (V_in+ + V_in−)/2] stays within 0 V to V_CC−1.5 V (i.e., 0–1.5 V at 3 V supply). Exceeding V_icm risks unstable output or ESD diode conduction.