Texas Instruments TLV3691IDCKT

Overview

TLV3691IDCKT from Texas Instruments is a single-channel nanopower comparator with rail-to-rail inputs, push-pull output, 75 nA typical quiescent current (200 nA max over –40°C to 125°C), 0.9 V to 6.5 V supply range, and ±3 mV input offset voltage. It enables ultra-low-power voltage monitoring in battery-constrained systems such as portable medical devices and industrial sensors.

For engineers reviewing the TLV3691IDCKT datasheet, TLV3691IDCKT pinout, TLV3691IDCKT application, or TLV3691IDCKT equivalent, key selection criteria include its sub-100-nA operating current at 0.9 V, 100-mV beyond-rail input common-mode range, 24 µs propagation delay at 6.5 V/100 mV overdrive, and SC70-5 package compatibility with space-constrained PCB layouts.

Technical Context

The TLV3691IDCKT implements a CMOS-based nanopower comparator core with rail-to-rail input stage capable of accepting signals from –0.1 V to V_CC + 0.1 V, eliminating external level-shifting in low-voltage systems. Its internal hysteresis (17 mV typical) suppresses noise-induced output oscillation without requiring external feedback components.

It features a push-pull output stage delivering 6–10 mV VOL and 70–75 mV VOH swing at 0.9 V supply (IO ≤ 100 µA), enabling direct interfacing with logic inputs across its full voltage range. No external pull-up resistor is needed-reducing BOM count and leakage paths in always-on sensing nodes.

Key Specifications

Pinout & Package

TLV3691IDCKT is housed in a 5-pin SC70 package (1.25 mm × 2.00 mm body size), optimized for high-density portable PCBs. The package features gull-wing leads compatible with standard reflow processes and provides thermal resistance R_θJA = 297.4°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3691IDCKT, TLV3601DBVR trades nanopower efficiency for speed, while MAX9021AXK+T sacrifices push-pull convenience for voltage-level adaptability-making TLV3691IDCKT optimal for space- and energy-constrained designs demanding self-contained, rail-compatible output behavior.

Availability

TLV3691IDCKT is available at Aetrix Electronics and suitable for overvoltage detection, window comparator circuits, and zero-crossing detection requiring stable component supply across industrial temperature ranges and long-life battery applications.

Supply support for TLV3691IDCKT 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and low-power design.

The TLV3691IDCKT belongs to TI's nanopower comparator product line, engineered specifically for battery-operated and energy-harvesting systems where microampere-level current budgets and extended temperature reliability are mandatory.

FAQ

What is the minimum supply voltage for reliable operation of the TLV3691IDCKT?

The TLV3691IDCKT is specified to operate down to 0.9 V across the full –40°C to 125°C temperature range. At this voltage, it maintains 75 nA typical quiescent current, 24 µs propagation delay (with 100 mV overdrive), and functional rail-to-rail input operation - making TLV3691IDCKT ideal for single-cell alkaline or lithium primary battery systems where voltage sags below 1.0 V during discharge.

Does the TLV3691IDCKT require an external pull-up resistor on its output?

No. The TLV3691IDCKT features a true push-pull output stage that actively drives both high and low states without external components. At 0.9 V supply, it delivers VOL ≤ 45 mV and VOH ≤ 80 mV (IO ≤ 100 µA), ensuring clean logic transitions into high-impedance loads - a key advantage over open-drain comparators and a defining feature of the TLV3691IDCKT design.

Can the TLV3691IDCKT accept input voltages outside its supply rails?

Yes. The TLV3691IDCKT input common-mode range extends 100 mV beyond both supply rails: from (GND – 0.1 V) to (VCC + 0.1 V). This capability is confirmed across –40°C to 125°C and enables direct sensing of negative transients or unregulated bus voltages - a verified specification of TLV3691IDCKT, not a theoretical limit.

What is the typical input offset voltage of the TLV3691IDCKT, and how does it vary with temperature?

The TLV3691IDCKT has a typical input offset voltage of ±3 mV at 25°C, with a maximum of ±22 mV over the full –40°C to 125°C operating range. Its offset drift is ±70 µV/°C, meaning total offset variation remains bounded and predictable - critical for accurate threshold setting in TLV3691IDCKT-based voltage monitors used in medical or industrial safety circuits.

Is the TLV3691IDCKT pin-compatible with other comparators in the TLV36xx family?

No. TLV3691IDCKT uses a 5-pin SC70 package with pinout VCC–GND–IN+–IN−–OUT. Other TLV36xx variants (e.g., TLV3601 in SOT-23-5) have different pin assignments - IN+ and IN− are swapped, and NC pins differ. Substituting TLV3691IDCKT requires PCB layout revision; it is not a drop-in replacement for any other TLV36xx device.