STMicroelectronics TS3702IPT

Overview

TS3702IPT from STMicroelectronics is a micropower dual CMOS voltage comparator with push-pull output, 9 μA typical supply current per comparator, 2.7–16 V single-supply operation, and 1 pA typical input bias current. It replaces bipolar LM393 in battery-powered sensor interfaces requiring rail-to-rail input common-mode range down to GND and no external pull-up resistors.

For engineers reviewing the TS3702IPT datasheet, TS3702IPT pinout, TS3702IPT application, or TS3702IPT equivalent, key selection criteria include ultra-low quiescent current, input offset voltage ≤6.5 mV, response time ≤2.2 μs (5 mV overdrive), push-pull output compatibility with 3.3 V/5 V logic, and TSSOP8 footprint for space-constrained designs.

Technical Context

The TS3702IPT integrates two independent high-impedance CMOS comparators sharing a common supply domain. Each comparator features complementary metal-oxide-semiconductor input stages with 10¹² Ω typical input impedance and differential pair topology enabling 1 pA typical input offset current.

Its push-pull output stage drives high (VOH ≥4.3 V at 5 V supply) and low (VOL ≤375 mV) without external components, supporting direct interfacing to CMOS/TTL loads while maintaining 2 μs typical propagation delay under 5 mV overdrive conditions.

Key Specifications

Pinout & Package

TSSOP8 package: 3 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm height, lead-free ECOPACK® compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLV3702IDR, TS3702IPT delivers optimal balance of ultra-low power (9 μA), GND-referenced inputs, and industry-standard TSSOP8 packaging-making it ideal for space- and energy-constrained industrial sensor nodes where LM393's power penalty is unacceptable and TLV3702's 0.6 V min supply is unnecessary.

Availability

TS3702IPT is available at Aetrix Electronics and suitable for battery-powered sensor interfaces, industrial current-loop receivers, portable medical device monitors, and low-power wake-up circuits requiring stable component supply across extended production lifecycles.

Supply support for TS3702IPT 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 TS3702 belongs to ST's precision analog comparator product line, engineered specifically for energy-efficient signal conditioning in always-on sensing and monitoring systems where supply current and input impedance are critical design constraints.

FAQ

What is the maximum operating temperature range for TS3702IPT?

The TS3702IPT is rated for −40 °C to +125 °C operating free-air temperature, matching the TS3702I grade specified in ST's ordering table. This rating is validated per Table 2 of the official datasheet and applies across the full 2.7–16 V supply range with no derating required up to 125 °C ambient.

Can TS3702IPT operate from a single 3.3 V supply?

Yes. The TS3702IPT supports single-supply operation from 2.7 V to 16 V, including 3.3 V. At 3.3 V, VOH is guaranteed ≥1.8 V and VOL ≤575 mV under 4 mA load, ensuring reliable interfacing with 3.3 V logic families without level translation.

Does TS3702IPT require external pull-up resistors on its outputs?

No. Unlike open-collector comparators such as LM393, TS3702IPT features a CMOS push-pull output stage that actively drives both high and low states. This eliminates the need for external pull-up resistors, reducing component count, PCB area, and potential signal rise-time degradation.

How does the input common-mode voltage range benefit sensor interfacing?

The input common-mode range includes GND (0 V) and extends to VCC−1.5 V, allowing direct connection of sensors referenced to system ground-such as thermistors, strain gauges, or current-sense resistors-without level-shifting circuitry. This simplifies front-end design and avoids introducing offset errors from op-amp buffers.