STMicroelectronics TS339IPT

Overview

TS339IPT from STMicroelectronics is a micropower quad CMOS voltage comparator with 9 μA typical supply current per comparator, 1.5 μs typical response time at 5 mV overdrive, and input common-mode range extending to ground. It operates from 2.7 V to 16 V single supply (or ±1.35 V to ±8 V dual supply), features 1 pA typical input bias current, and is housed in a TSSOP14 package for space-constrained industrial sensing and battery-powered monitoring systems.

For engineers reviewing the TS339IPT datasheet, TS339IPT pinout, TS339IPT application, or TS339IPT equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail input capability down to GND, fast propagation delay under light overdrive, and compatibility with legacy LM339-based designs requiring CMOS-level power savings.

Technical Context

The TS339IPT integrates four independent high-impedance CMOS comparators on a single die, each with input bias current ≤1 pA and input offset voltage ≤6.5 mV across temperature. Its architecture supports operation with inputs at GND while maintaining stable output states, enabled by ESD-protected input stages rated for ±18 V differential voltage.

Output stage design delivers TTL-compatible low-level output voltage (≤550 mV at 6 mA sink) and high-impedance open-drain behavior-requiring external pull-up-enabling wired-OR logic and level translation across mixed-voltage domains without additional interface circuitry.

Key Specifications

Pinout & Package

TSSOP14 (Thin Shrink Small Outline Package), 14-pin surface-mount, 0.65 mm pitch, 5.0 × 6.4 mm body size, RoHS-compliant ECOPACK®2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DT and TS3704IPT, TS339IPT uniquely balances micropower operation, GND-sensing capability, and open-drain flexibility-making it optimal for battery-powered multi-threshold monitoring where wiring simplicity and power efficiency are co-primary constraints.

Availability

TS339IPT is available at Aetrix Electronics and suitable for industrial temperature monitoring, battery management systems, motor protection circuits, and optical smoke detection requiring stable component supply across extended temperature ranges (-40°C to +125°C).

Supply support for TS339IPT 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 silicon solutions for automotive, industrial, and consumer markets since 1987.

The TS339 belongs to ST's precision analog comparators product line, engineered specifically for energy-efficient sensing and threshold-detection applications in harsh-environment industrial and safety-critical systems.

FAQ

Can TS339IPT operate from a 2.7 V single supply?

Yes. The TS339IPT is fully specified from 2.7 V to 16 V single supply (or ±1.35 V to ±8 V dual supply). At 2.7 V, it maintains 1 pA input bias current, 6.5 mV max input offset voltage, and 1.5 μs response time with 5 mV overdrive-verified per Table 3 in the March 2021 datasheet Rev 5.

Does TS339IPT require external pull-up resistors on its outputs?

Yes. All four outputs are open-drain and require external pull-up resistors to VCC or another logic rail. Typical values range from 4.7 kΩ to 10 kΩ for 3.3 V/5 V systems. Pull-ups are mandatory to achieve valid high-level logic states; omission results in undefined output voltage.

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

Per Absolute Maximum Ratings (Table 2), the input voltage (Vi) may reach 18 V regardless of supply, but the input common-mode range (Vicm) is limited to 0 V to VCC–1.2 V. At VCC = 3 V, Vicm spans 0 V to 1.8 V-exceeding this risks incorrect output states or increased input current due to ESD diode conduction.

Is TS339IPT pin-compatible with LM339 in TSSOP14 package?

Yes. TS339IPT uses identical TSSOP14 pinout and functional mapping as LM339 variants offered in the same package (e.g., LM339PW from TI). Pin-for-pin replacement is supported, including shared VCC, GND, and output/inverting/non-inverting assignments across all four channels.