Texas Instruments TLV1824PWR

Overview

TLV1824PWR from Texas Instruments is a quad-channel, 40V rail-to-rail input comparator with open-drain outputs, designed for industrial and automotive signal conditioning. It operates from 2.4V to 40V supply, delivers 420ns typical propagation delay, draws only 5μA per channel, and features Power-On Reset (POR) for deterministic startup in motor drive voltage monitoring circuits.

For engineers reviewing the TLV1824PWR datasheet, TLV1824PWR pinout, TLV1824PWR application, or TLV1824PWR equivalent, this page provides verified functional context, validated pin assignments for the TSSOP-14 package, confirmed open-drain output behavior up to 40V pull-up, and real-world substitution guidance for high-voltage comparator selection.

Technical Context

The TLV1824PWR implements four independent open-drain comparators with rail-to-rail inputs spanning (V−) − 0.2 V to (V+) + 0.2 V. Each channel includes an internal Power-On Reset circuit that holds the output low until V+ reaches ≥2.4V, then releases control after ≤200μs.

Its open-drain architecture allows output pull-up to voltages up to 40V-fully independent of the comparator's own supply rails-enabling level translation and wired-OR logic. Input bias current is 150fA at 25°C, and input offset voltage is ±0.5mV (typ), supporting precision threshold detection across −40°C to +125°C.

Key Specifications

Pinout & Package

TLV1824PWR is packaged in a 14-pin TSSOP (PW) with 4.40mm × 5.00mm body size and exposed thermal pad connected to V−. Pin functions are electrically identical across SOIC/TSSOP/SOT-23-14 variants per TI documentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad open-drain comparator applications.

Compared with LM339DR and TLV1824IDR, TLV1824PWR uniquely combines ultra-low power (5μA), high speed (420ns), and compact TSSOP packaging - making it optimal for space-constrained, battery-aware, or thermally demanding industrial modules where every microamp and nanosecond matters.

Availability

TLV1824PWR is available at Aetrix Electronics and suitable for motor drives, factory automation systems, and automotive infotainment clusters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV1824PWR 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 chain and power management ICs.

The TLV1824PWR belongs to TI's TLV182x family of micro-power, high-voltage comparators engineered for robust operation in harsh industrial and automotive environments - emphasizing reliability, low power, and flexible output interfacing.

FAQ

What is the maximum allowable pull-up voltage on TLV1824PWR open-drain outputs?

The TLV1824PWR open-drain outputs support pull-up voltages up to 40V, independent of the device's own V+ supply. This is explicitly specified in the Absolute Maximum Ratings table (output voltage from V−: –0.3V to 42V) and confirmed in Section 7.4.2.2 of the datasheet. For reliable operation, ensure the pull-up source remains within this limit and include current limiting if short-circuit risk exists.

Does TLV1824PWR require external pull-up resistors on all four outputs?

Yes - TLV1824PWR has open-drain outputs and cannot source current. Each OUT pin (OUT1–OUT4) must be pulled up externally to define the logic HIGH state. TI recommends pull-up currents between 100μA and 1mA; typical values range from 10kΩ (for 3.3V logic) to 100kΩ (for 24V systems), balancing rise time and power consumption.

Can unused comparator channels in TLV1824PWR be left unconnected?

No - unused inputs must not be left floating. Per Section 7.4.1.3, tying IN+ and IN− together causes high-frequency chatter due to internal noise amplification. Instead, bias each unused channel with ≥50mV differential: e.g., connect IN− to V− and IN+ to a stable reference or V+, ensuring both pins remain within the rail-to-rail input range (V− − 0.2V to V+ + 0.2V).

How does the Power-On Reset (POR) function behave on TLV1824PWR during power-down?

During power-down, the TLV1824PWR POR circuit activates when V+ falls below 2.4V, holding all outputs low for up to 200μs after crossing that threshold. This ensures clean, glitch-free deactivation - critical in safety-critical systems like motor drives where unintended output transitions could cause hazardous motion. The behavior is identical during ramp-up and ramp-down.

Is TLV1824PWR pin-compatible with earlier TI comparator families like TLV3012 or LM339?

No - TLV1824PWR uses a unique 14-pin TSSOP pinout defined in Table 4-3 and is not pin-compatible with TLV3012 (8-pin) or LM339 (14-pin SOIC with different pin mapping). While functional equivalents exist, PCB layout changes are required. The TLV1824IDR (SOIC-14) variant shares identical pin functions but differs in package dimensions and thermal characteristics.