Texas Instruments TLV3603QDCKRQ1

Overview

TLV3603QDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive high-speed comparator with 2.5 ns propagation delay, 325 MHz toggle frequency, and 1.25 ns minimum pulse width detection capability. It features push-pull output, adjustable hysteresis control via external resistor, and latch function - enabling robust noise immunity and state-holding in motor control and LIDAR timing circuits.

For engineers reviewing the TLV3603QDCKRQ1 datasheet, TLV3603QDCKRQ1 pinout, TLV3603QDCKRQ1 application, or TLV3603QDCKRQ1 equivalent, key selection considerations include its 6-pin SC70 package, rail-to-rail inputs extending 200 mV beyond rails, ±5 mV input offset voltage, and dual-mode operation (active vs. latch) controlled by the LE/HYS pin.

Technical Context

The TLV3603QDCKRQ1 implements a single-channel, high-speed comparator architecture with internal Power-on-Reset (POR) circuitry ensuring known low-state startup until VCC ≥ 2.1 V. Its input stage supports common-mode voltages from VEE – 0.2 V to VCC + 0.2 V, enabling zero-crossing detection in DC/DC feedback loops and time-of-flight signal conditioning.

Operation is governed by the LE/HYS pin: floating or pulled high enables adjustable hysteresis (3–60 mV via external resistor); pulled low activates latch mode with 7 ns latch-to-output delay and 7.2 ns hold time. Output drives CMOS loads directly with 1 mA sourcing/sinking capability and <0.75 ns rise/fall times.

Key Specifications

Pinout & Package

TLV3603QDCKRQ1 is packaged in a 6-pin SC70 (DCK) package with nominal body size 1.25 mm × 2.00 mm, optimized for space-constrained automotive modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed comparator applications.

Compared with TLV3603QDCKRQ1, TLV3601QDCKRQ1 sacrifices latch and hysteresis adjustability for smaller footprint, while LMH7322MQX/NOPB trades single-channel simplicity and SC70 size for dual functionality and wider voltage range - making TLV3603QDCKRQ1 optimal for space-constrained, noise-prone automotive timing applications requiring state retention.

Availability

TLV3603QDCKRQ1 is available at Aetrix Electronics and suitable for automotive BMS, inverter control, and LIDAR subsystems requiring stable component supply with AEC-Q100 compliance and long-term production support.

Supply support for TLV3603QDCKRQ1 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 for automotive, industrial, and communications markets.

The TLV360x-Q1 product line delivers high-speed, AEC-Q100-qualified comparators designed specifically for automotive timing-critical functions including motor control, battery monitoring, and time-of-flight sensing.

FAQ

What is the purpose of the LE/HYS pin on the TLV3603QDCKRQ1?

The LE/HYS pin on the TLV3603QDCKRQ1 serves two distinct functions: when pulled low, it enables latch mode to hold the output state; when floating or pulled high, it configures adjustable hysteresis via an external resistor to ground. This dual functionality allows the TLV3603QDCKRQ1 to replace discrete latch + comparator combinations in automotive safety circuits while maintaining noise immunity through programmable hysteresis.

Does TLV3603QDCKRQ1 support rail-to-rail input operation?

Yes, TLV3603QDCKRQ1 supports rail-to-rail input operation with common-mode voltage range from VEE – 0.2 V to VCC + 0.2 V. This capability enables direct interface with sensors and amplifiers operating at or beyond supply rails - such as current-sense amplifiers in DC/DC converters - without external biasing networks, reducing design complexity and component count in TLV3603QDCKRQ1-based systems.

What is the minimum input pulse width detectable by TLV3603QDCKRQ1?

The TLV3603QDCKRQ1 can reliably detect input pulses as narrow as 1.25 ns under standard test conditions (50 mV overdrive, 5 pF load). This specification is guaranteed across the full –40°C to +125°C operating temperature range and enables precise time-of-flight measurements in mechanically scanning LIDAR systems where TLV3603QDCKRQ1 is used for echo pulse timing.

How does the Power-on-Reset (POR) circuit affect TLV3603QDCKRQ1 behavior during startup?

The POR circuit in TLV3603QDCKRQ1 forces the output low (at VEE) whenever VCC is below 2.1 V, providing a deterministic startup state during battery ramp-up or cold-cranking. Once VCC reaches or exceeds 2.1 V, the comparator resumes normal operation - ensuring TLV3603QDCKRQ1 never enters an undefined output state during vehicle power sequencing, which is critical for functional safety compliance.

Can TLV3603QDCKRQ1 operate from a 2.4 V supply?

Yes, TLV3603QDCKRQ1 is fully specified to operate from 2.4 V to 5.5 V supply voltage. At 2.4 V, it maintains 2.5 ns typical propagation delay, 325 MHz toggle frequency, and ±5 mV input offset voltage across temperature - enabling compatibility with low-voltage automotive domains such as body electronics and infotainment power supplies without performance degradation.