Texas Instruments TLC354IDRG4

Overview

TLC354IDRG4 from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for precision voltage comparison in single- or dual-supply systems. It delivers 5 mV max input offset voltage, 5 pA typical input bias current, and operates from 1.4 V to 16 V supply across –40°C to 85°C. Its n-channel open-drain outputs interface directly with TTL, MOS, and CMOS logic, enabling wired-AND configurations in battery-powered sensor monitoring circuits.

For engineers reviewing the TLC354IDRG4 datasheet, TLC354IDRG4 pinout, TLC354IDRG4 application, or TLC354IDRG4 equivalent, key selection considerations include its ultra-low 130 µA supply current at 1.4 V, rail-to-rail common-mode input range including ground, and guaranteed 5 mV VIO over industrial temperature range - critical for low-power analog threshold detection and window comparator designs.

Technical Context

The TLC354IDRG4 integrates four independent comparators on a single die using LinCMOS™ process technology, enabling high input impedance (>10¹² Ω) and sub-picoampere input bias current. Each channel features an n-channel open-drain output stage compatible with external pull-up voltages up to 18 V.

It supports single-supply operation down to 1.4 V and dual-supply operation with ≥1.4 V total differential, with common-mode input range extending to ground and up to VDD–1.5 V across full temperature range. Input offset voltage drift is specified at 0.23 µV/month, supporting long-term stability in precision reference monitoring.

Key Specifications

Pinout & Package

Package: SOIC-14 (D package), 8.75 mm × 4.0 mm × 1.75 mm max height, RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DR and TLC3704CDR, the TLC354IDRG4 uniquely combines 1.4 V minimum supply, 5 pA input bias, and industrial temperature qualification - making it the only option for long-life, low-voltage, high-impedance sensor monitoring in harsh environments.

Availability

TLC354IDRG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery management subsystems, and overvoltage protection circuits requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TLC354IDRG4 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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs and industrial-grade reliability.

The TLC354IDRG4 belongs to TI's LinCMOS™ comparator family, engineered specifically for low-power, high-input-impedance voltage comparison in battery-operated and industrial equipment where long-term offset stability and wide supply flexibility are essential.

FAQ

What is the maximum supply voltage rating for the TLC354IDRG4?

The TLC354IDRG4 has an absolute maximum supply voltage (VDD) of 18 V. However, the recommended operating range is 1.4 V to 16 V. Exceeding 16 V may compromise parametric performance or reliability, even if within absolute ratings. The device is rated for continuous operation at 16 V across its full industrial temperature range (–40°C to +85°C), and the TLC354IDRG4 datasheet specifies electrical characteristics up to this limit.

Does the TLC354IDRG4 support true rail-to-rail input operation?

The TLC354IDRG4 supports common-mode input voltage down to ground (0 V) and up to VDD–1.5 V across its full temperature range. While not rail-to-rail on the high side, its ability to accept inputs at ground makes it suitable for single-supply systems interfacing with grounded sensors. The TLC354IDRG4 does not support input voltages equal to VDD, distinguishing it from newer CMOS comparators like the TLC3704, which offer full rail-to-rail input capability.

Can the TLC354IDRG4 outputs be tied together for wired-AND logic?

Yes - all four outputs of the TLC354IDRG4 are n-channel open-drain, allowing them to be externally pulled up and connected together to implement positive-logic wired-AND functionality. This is explicitly supported in the datasheet and enables compact logic reduction without additional discrete components. When using this configuration with the TLC354IDRG4, ensure the pull-up resistor value and voltage comply with sink current limits (20 mA max per output) and desired rise time.

Is the TLC354IDRG4 pin-compatible with the LM339?

Yes, the TLC354IDRG4 is fully pin-compatible with the LM339 in SOIC-14 (D) package. Both devices share identical pin assignments for VDD, GND, and all eight inputs plus four outputs. This allows direct drop-in replacement in existing LM339-based designs, delivering immediate improvements in input bias current (5 pA vs. 250 nA), supply current (130 µA vs. ~500 µA), and low-voltage operation (1.4 V vs. 2 V min) without PCB modification.

What is the input offset voltage drift specification for the TLC354IDRG4 over time?

The TLC354IDRG4 exhibits ultrastable input offset voltage drift of typically 0.23 µV per month, including the first 30 days of operation. This value is measured under worst-case input conditions and reflects long-term parametric stability critical for uncalibrated, maintenance-free applications such as remote environmental monitors or sealed battery management systems. The TLC354IDRG4 datasheet confirms this drift behavior applies to the industrial-grade variant (TLC354I), which includes the TLC354IDRG4.