Texas Instruments TLV3702QDRQ1

Overview

TLV3702QDRQ1 from Texas Instruments is a dual nanopower comparator with push-pull CMOS outputs, designed for automotive-grade voltage monitoring and threshold detection in always-on systems. It operates from 2.7V to 16V supply, draws only 560nA per channel at 25°C, supports rail-to-rail input common-mode range (–0.1V to 16V), and features reverse battery protection up to 18V.

For engineers reviewing the TLV3702QDRQ1 datasheet, TLV3702QDRQ1 pinout, TLV3702QDRQ1 application, or TLV3702QDRQ1 equivalent, key selection considerations include ultra-low quiescent current, over-the-rail input capability, guaranteed operation across –40°C to 125°C, and push-pull output eliminating external pull-up resistors in battery-powered automotive sensors.

Technical Context

The TLV3702QDRQ1 implements a fail-safe input stage enabling over-the-rail operation - inputs tolerate voltages up to 16V independent of V+, with bias current rising to ~55nA when exceeding V+. Its internal power-on reset holds the output low for ≤2ms during supply ramp-up, ensuring deterministic startup behavior in automotive power domains.

Each comparator channel integrates 2.8mV typical hysteresis, 76dB minimum CMRR at 5V common-mode, and push-pull output capable of sourcing/sinking ≥50µA while maintaining VOH ≥ (V+) – 450mV and VOL ≤ 300mV across temperature. Propagation delay is 14µs (low-to-high) and 13µs (high-to-low) at 100mV overdrive into 10pF/25pF loads.

Key Specifications

Pinout & Package

TLV3702QDRQ1 is housed in an 8-pin SOIC (D) package with standard lead pitch (1.27mm), JEDEC MS-012AC compliant, RoHS-compliant NIPDAU finish, and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3702QDRQ1, TLV3702QDRG4Q1 offers identical performance with enhanced environmental traceability, while TLC3702QDR trades push-pull convenience and reverse-battery robustness for marginally lower quiescent current and open-drain versatility.

Availability

TLV3702QDRQ1 is available at Aetrix Electronics and suitable for automotive battery supervision, ECU wake-up monitoring, and body control module fault detection requiring stable component supply across extended temperature and long product lifecycles.

Supply support for TLV3702QDRQ1 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 specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management ICs.

The TLV370x-Q1 family was developed specifically for ultra-low-power, high-voltage threshold detection in automotive electronics, addressing needs for fail-safe inputs, reverse-battery resilience, and AEC-Q100-compliant operation.

FAQ

What is the maximum input voltage the TLV3702QDRQ1 can tolerate relative to V+?

The TLV3702QDRQ1 supports over-the-rail input operation: its inputs tolerate voltages from –0.1V to 16V independent of the V+ supply voltage. This means IN+ or IN– can exceed V+ by up to 5V without damage or false triggering, enabling direct battery sensing without external level-shifting circuitry. The device maintains high input impedance and failsafe behavior even when V+ is unpowered.

Does the TLV3702QDRQ1 have built-in hysteresis, and what is its typical value?

Yes, the TLV3702QDRQ1 includes internal hysteresis of 2.8mV typical (1–5mV min–max) to suppress noise-induced output oscillation near threshold crossings. This fixed hysteresis is integrated into the comparator core and requires no external components. It improves noise immunity in automotive environments with high EMI, especially when monitoring slowly varying signals like battery voltage or temperature-derived references.

How does the power-on reset (POR) function in the TLV3702QDRQ1 affect system reliability?

The TLV3702QDRQ1 incorporates an internal POR circuit that holds both outputs low for ≤2ms after V+ crosses 1.5V during power-up or power-down. This prevents undefined or glitchy output states during supply ramping, which is critical in automotive systems where premature MCU wake-up or erroneous fault flags could cause safety-related misbehavior. The POR ensures deterministic initialization without external RC networks.

Can the TLV3702QDRQ1 drive a MOSFET gate directly, and what are the output drive limits?

Yes, the TLV3702QDRQ1's push-pull CMOS output can drive small-signal MOSFET gates directly. It sources/sinks ≥50µA while maintaining VOH ≥ (V+) – 450mV and VOL ≤ 300mV across –40°C to 125°C. For typical 12V gate-drive applications, it delivers sufficient current for low-capacitance logic-level MOSFETs. However, a series current-limiting resistor is recommended if output shorts to V+ or V– are possible at >12V supply to prevent thermal runaway.

Is the TLV3702QDRQ1 pin-compatible with any non-automotive variants of the TLV3702 family?

No - TLV3702QDRQ1 is not pin-compatible with non-Q1 variants such as TLV3702IDR. While both use the same SOIC-8 (D) package and share identical pin functions, the Q1 version undergoes additional AEC-Q100 stress testing, has tighter parameter screening across temperature, and uses different wafer fabrication and assembly controls. Substituting non-Q1 parts in automotive designs violates qualification requirements and voids compliance guarantees.