Texas Instruments TLV3402CDR

Overview

TLV3402CDR from Texas Instruments is a dual-channel nanopower open-drain comparator with 470 nA per channel supply current, –0.1 V to VCC + 5 V input common-mode range, and operation from 2.5 V to 16 V supply. It delivers ultra-low quiescent power for battery-critical sensing in portable medical devices and wireless security systems.

For engineers reviewing the TLV3402CDR datasheet, TLV3402CDR pinout, TLV3402CDR application, or TLV3402CDR equivalent, key selection criteria include nanoscale supply current, rail-exceeding input range, open-drain output compatibility with mixed-voltage logic, and industrial-grade temperature support (–40°C to +125°C).

Technical Context

The TLV3402CDR implements a CMOS-input, open-drain output architecture optimized for single-supply operation. Its input stage supports common-mode voltages beyond VCC by up to 5 V and down to –0.1 V, enabling high-side voltage monitoring without level-shifting. Reverse-battery protection withstands up to 18 V reverse polarity.

Each channel operates independently with no internal coupling. Propagation delay varies with overdrive: 55 µs (low-to-high) and 30 µs (high-to-low) at 50 mV overdrive, VCC = 5 V, CL = 10 pF. Input offset voltage is 250 µV (typ), with 3 µV/°C drift.

Key Specifications

Pinout & Package

TLV3402CDR is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with exposed pad not present. Pin functions are electrically isolated per channel and fully specified across temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3402IDR, TLV3402CDR trades extended temperature range for lower cost and sufficient performance in commercial environments; compared with TLV7032DR, it offers superior IQ and input voltage range at the expense of speed and output architecture - making TLV3402CDR the preferred choice for long-life, high-voltage, battery-constrained systems.

Availability

TLV3402CDR is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, and remote industrial telemetry requiring stable component supply across multi-year production cycles.

Supply support for TLV3402CDR 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

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in low-power signal conditioning and precision analog ICs.

The TLV340x family was designed specifically for ultra-low-power threshold detection in battery-constrained edge devices - prioritizing nanoampere quiescent current, rail-exceeding inputs, and robust industrial packaging without sacrificing accuracy.

FAQ

What is the maximum supply voltage rating for TLV3402CDR?

The absolute maximum supply voltage for TLV3402CDR is 17 V, though recommended operating range is 2.5 V to 16 V. Exceeding 17 V risks permanent damage per Absolute Maximum Ratings. The device also features reverse-battery protection up to –18 V on VCC relative to GND, making TLV3402CDR resilient against incorrect battery installation in field-deployed units.

Does TLV3402CDR support rail-to-rail input operation?

TLV3402CDR does not provide rail-to-rail input - instead, it supports an extended common-mode range from –0.1 V to VCC + 5 V. This exceeds the supply rails, enabling direct high-side sensing (e.g., monitoring a 12-V battery with 5-V logic supply) without external level shifters. Input stage CMOS design ensures low bias current (80 pA typ) across this full range.

Can TLV3402CDR drive an LED directly?

No, TLV3402CDR cannot drive an LED directly because its open-drain output lacks a pull-up internally and is rated for ≤10 mA sink current. To drive an LED, an external current-limiting resistor must connect between VCC and the output pin, with the LED cathode tied to the output and anode to VCC. TLV3402CDR itself only provides the switching node - full LED current path design depends on external components.

What is the typical input offset voltage of TLV3402CDR and how does it affect threshold accuracy?

The typical input offset voltage of TLV3402CDR is 250 µV, with a maximum of 3600 µV over temperature. This directly adds error to the effective threshold voltage: for a 1.25-V reference, worst-case offset introduces ±3.6 mV uncertainty. For high-accuracy applications, use matched external resistors and low-drift references like REF3312, and consider trimming in production if sub-millivolt accuracy is required.

Is TLV3402CDR pin-compatible with other devices in the TLV340x family?

TLV3402CDR (8-pin SOIC) shares identical pinout with TLV3402IDR and TLV3402IP, but is not pin-compatible with TLV3401 (5-pin SOT-23) or TLV3404 (14-pin SOIC/TSSOP). Within the dual-channel variants, all TLV3402-x DR/IP/P packages use the same 1–8 pin mapping: 1OUT, 1IN–, 1IN+, GND, 2IN+, 2IN–, 2OUT, VCC - enabling direct substitution among D/SOIC variants without PCB change.