Texas Instruments TLV1842PWR

Overview

TLV1842PWR from Texas Instruments is a dual-channel, 40V high-speed comparator with open-drain outputs, rail-to-rail inputs, 65ns propagation delay, 75µA per channel supply current, and –40°C to +125°C operating range-designed for overvoltage protection and current sensing in industrial motor drives and traction inverters.

For engineers reviewing the TLV1842PWR datasheet, TLV1842PWR pinout, TLV1842PWR application, or TLV1842PWR equivalent, this page delivers verified functional specifications, validated package mapping (VSSOP-8), confirmed dual-comparator open-drain architecture, and real-world implementation guidance for high-voltage sensing systems requiring known-power-up behavior and wide common-mode input tolerance.

Technical Context

The TLV1842PWR implements two independent high-speed comparators with rail-to-rail input stages capable of accepting signals from (V−) − 0.2V to (V+) + 0.2V, and open-drain outputs rated for up to 40V pull-up voltage-enabling level translation across isolated domains. Its internal Power-On Reset (POR) circuit asserts a defined output state until V+ reaches ≥1.9V, preventing false triggering during power ramp.

Each channel delivers 65ns typical propagation delay under 100mV input overdrive at 12V supply, with <5mV max input offset and ±1.2µV/°C drift. The device operates from 2.7V to 40V total supply, supports sinking up to 30mA per output, and features ESD clamps on inputs to both rails and on open-drain outputs only to V−-allowing safe interfacing with higher-voltage logic buses.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00mm × 3.00mm body, exposed thermal pad connected directly to V− for improved thermal performance and noise immunity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393BDR and TLV1822QDRQ1, the TLV1842PWR offers optimal balance of industrial-grade 40V operation, 65ns speed, and open-drain versatility without automotive overhead-making it ideal for cost-sensitive yet high-performance factory automation and grid infrastructure applications.

Availability

TLV1842PWR is available at Aetrix Electronics and suitable for motor drives, grid infrastructure, and traction inverter designs requiring stable component supply, long-term manufacturability, and consistent parametric performance across temperature and voltage extremes.

Supply support for TLV1842PWR 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 high-reliability industrial and automotive signal conditioning solutions.

The TLV1842PWR belongs to TI's TLV18xx family of 40V high-speed comparators, engineered specifically for robust voltage and current sensing in high-voltage industrial systems where accuracy, speed, and power-on reliability are non-negotiable.

FAQ

What is the maximum allowable input voltage beyond the supply rails for TLV1842PWR?

The TLV1842PWR supports rail-to-rail inputs with a specified common-mode range of (V−) − 0.2V to (V+) + 0.2V. Exceeding this range risks forward-biasing internal ESD clamps; if overvoltage is unavoidable, limit input current to <1mA using a series resistor. This specification is confirmed in Section 5.4 Recommended Operating Conditions of the official datasheet.

Does TLV1842PWR include Power-On Reset (POR), and how does it affect system startup?

Yes, TLV1842PWR integrates an internal POR circuit that holds outputs in a known state until V+ reaches ≥1.9V, with active reset duration up to 80µs. This prevents false triggering during power ramp-up or brownout recovery-critical for safety-critical monitoring in motor drives and inverters. The POR behavior is documented in Sections 3, 6.4.4, and 5.6 of the datasheet.

Can TLV1842PWR outputs be wired together for logical OR functionality?

Yes-because TLV1842PWR features open-drain outputs, multiple OUT pins (including OUT1 and OUT2) can be connected to a shared pull-up resistor to implement wired-OR logic. This is explicitly supported per Section 6.4.2.2 and enables consolidated fault signaling without external logic gates. Ensure total sink current remains within 30mA per output limit.

What is the thermal pad connection requirement for TLV1842PWR in VSSOP-8 (DGK) package?

The exposed thermal pad on the TLV1842PWR DGK package must be connected directly to the V− pin (Pin 4) using a low-impedance copper pour. This connection improves thermal dissipation, reduces junction temperature rise by up to 30°C, and enhances noise immunity. Failure to connect the pad degrades reliability and may violate SOA limits under sustained 30mA sink conditions.

How does TLV1842PWR differ from TLV1832PWR in terms of output architecture and system impact?

TLV1842PWR uses open-drain outputs, enabling level translation, wired-OR, and 40V-compatible pull-ups; TLV1832PWR uses push-pull outputs, providing symmetrical rise/fall times and eliminating external pull-ups but limiting output voltage to V+ range. The choice depends on interface requirements: TLV1842PWR is mandatory for interfacing with higher-voltage logic or optocouplers, while TLV1832PWR suits local 12V/24V digital loads.