STMicroelectronics TS339CPT

Overview

TS339CPT from STMicroelectronics is a micropower quad CMOS voltage comparator in TSSOP-14 package, delivering 9 μA typical supply current per comparator, 1.5 μs typical response time with 5 mV overdrive, and rail-to-rail input common-mode range including ground-used in battery-powered sensor monitoring and precision threshold detection circuits.

For engineers reviewing the TS339CPT datasheet, TS339CPT pinout, TS339CPT application, or TS339CPT equivalent, key selection considerations include ultra-low input bias current (1 pA typ.), wide 2.7–16 V single-supply operation, CMOS push-pull output compatibility with LM339, and TSSOP14 thermal performance (R_thJA = 175 °C/W).

Technical Context

The TS339CPT implements four independent high-impedance CMOS comparators with input bias and offset currents both rated at 1 pA typ., enabling accurate sensing in high-source-impedance applications such as photodiode or thermistor interfaces. Its input common-mode range extends to GND and up to V_CC − 1.2 V, supporting direct connection to grounded sensors without level-shifting.

Each comparator features open-drain-compatible CMOS output stages capable of sinking ≥6 mA while maintaining VOL ≤ 550 mV (at 6 mA, V_CC = 5 V), and achieves fast propagation delays (t_PLH/t_PHL = 1.5/2.5 μs typ.) under TTL-compatible loading conditions with 50 pF capacitance and 5.1 kΩ pull-up.

Key Specifications

Pinout & Package

TSSOP14 (Thin Shrink Small Outline Package), 4.9 × 6.4 mm body, 0.65 mm lead pitch, 1.2 mm max height - optimized for space-constrained PCB layouts in portable instrumentation and IoT edge nodes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DT and TS3704IPT, the TS339CPT offers balanced trade-offs: lower power than LM339DT without requiring design changes for pull-up removal, and broader temperature rating (0–70 °C vs. −40–125 °C for TS3704IPT) at lower unit cost.

Availability

TS339CPT is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial threshold monitors, portable medical instruments, and smart home occupancy detectors requiring stable component supply across extended production lifecycles.

Supply support for TS339CPT 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 comparator family, engineered specifically for micropower, high-input-impedance applications in energy-constrained and noise-sensitive systems.

FAQ

Can TS339CPT operate from a 2.7 V single supply?

Yes. The TS339CPT is fully specified for single-supply operation from 2.7 V to 16 V, with guaranteed performance including input common-mode range down to GND and output sink capability at 2.7 V. Electrical characteristics tables in the datasheet confirm functionality at V_CC = 3 V, including 9 μA typical supply current and 550 mV max VOL at 6 mA load.

Does TS339CPT require external pull-up resistors on its outputs?

No. Unlike the bipolar LM339, the TS339CPT features CMOS push-pull outputs that actively drive both high and low states. Each output can source up to 27 nA (at V_CC = 5 V) and sink ≥6 mA, eliminating the need for external pull-up resistors in standard logic interfacing scenarios.

How does TS339CPT handle input voltages exceeding the supply rails?

The TS339CPT allows input voltages up to ±18 V differential and up to 18 V absolute (with respect to GND), independent of supply voltage. However, the input common-mode voltage must remain within 0 V to V_CC − 1.2 V for valid comparator operation; outside this range, output behavior is undefined though device integrity is preserved by internal ESD diodes rated for 50 V HBM.

Is TS339CPT pin-compatible with LM339 in TSSOP14 footprint?

No. The LM339 is not offered in TSSOP14; its standard packages are SO14 and PDIP14. The TS339CPT shares identical pin functions with LM339 in SO14 (TS339CDT), but the TSSOP14 variant (TS339CPT) uses the same pin numbering and assignment - making it functionally compatible but requiring PCB layout adaptation for the smaller, finer-pitch package.