Texas Instruments TLC274BCNG4

Overview

TLC274BCNG4 from Texas Instruments is a precision quad operational amplifier optimized for single-supply operation, featuring 2 mV max input offset voltage (25°C), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V over 0°C to 70°C and delivers 4.5 MHz unity-gain bandwidth with 0.5 V/μs slew rate - enabling accurate signal conditioning in low-voltage sensor interfaces and industrial analog front-ends.

For engineers reviewing the TLC274BCNG4 datasheet, TLC274BCNG4 pinout, TLC274BCNG4 application, or TLC274BCNG4 equivalent, key selection considerations include its C-suffix grade offset voltage specification, PDIP-14 package compatibility, single-supply common-mode range extending below ground, and suitability for precision DC-coupled amplification where low bias current (<60 pA) and high CMRR (≥65 dB) are required.

Technical Context

The TLC274BCNG4 uses a polysilicon-gate CMOS process to achieve ultra-low input bias current and stable offset voltage drift (0.3 µV/°C). Its input stage supports common-mode voltages down to –0.1 V (at VDD = 5 V), while the output stage drives to within 50 mV of GND and 0.05 V of VDD under 10 kΩ load - enabling true single-supply functionality without level-shifting circuitry.

It integrates ESD protection and latch-up immunity, and its four independent amplifiers share a single 2.24–6.4 mA supply current (quiescent) across the full temperature range. The device is not rail-to-rail input, but its input common-mode range includes the negative rail - a critical distinction for ground-referenced sensor buffering.

Key Specifications

Pinout & Package

The TLC274BCNG4 is housed in a 14-pin plastic dual in-line package (PDIP, N package), measuring 19.3 mm × 9.4 mm, with through-hole mounting and industry-standard pin spacing (0.1 inch).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision quad op-amp applications.

Compared with TLC274CDR and TLV274IDR, the TLC274BCNG4 provides the tightest offset voltage (2 mV) in through-hole PDIP packaging with widest supply range (3–16 V) and highest bandwidth - making it optimal for legacy industrial equipment upgrades and test fixtures requiring proven reliability and manual assembly.

Availability

TLC274BCNG4 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and automotive cabin electronics requiring stable component supply across extended temperature and long product lifecycles.

Supply support for TLC274BCNG4 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLC27xx family was designed to provide cost-effective, high-input-impedance precision amplification for single-supply systems - bridging performance gaps between bipolar and JFET op-amps while maintaining CMOS power efficiency.

FAQ

What is the maximum input offset voltage specification for TLC274BCNG4 at 25°C?

The TLC274BCNG4 has a maximum input offset voltage of 2 mV at 25°C, as specified in the TLC274B grade electrical characteristics table. This value is confirmed across both VDD = 5 V and VDD = 10 V test conditions and represents the upper limit for production units - tighter than the 10 mV spec of the standard TLC274C grade. The TLC274BCNG4 maintains this 2 mV max performance across its full 0°C to 70°C operating range, with typical values around 2000 µV.

Does TLC274BCNG4 support true rail-to-rail input operation?

No, the TLC274BCNG4 does not support rail-to-rail input. Its common-mode input voltage range is specified as –0.1 V to VDD–1 V at 25°C, meaning it accepts inputs slightly below GND but not up to VDD. However, the output is rail-to-rail - swinging from GND to within 50 mV of VDD under 10 kΩ load. This asymmetric capability makes the TLC274BCNG4 ideal for single-supply sensor buffering where the input signal stays near ground but full output swing is required.

What package type and dimensions does TLC274BCNG4 use?

The TLC274BCNG4 uses a 14-pin plastic dual in-line package (PDIP, N package) with through-hole leads. Its nominal dimensions are 19.3 mm in length and 9.4 mm in width, conforming to standard JEDEC MS-001. The 'G4' suffix indicates TI's green (lead-free) packaging standard, and the 'N' package code is explicitly listed in the Device Information table for TLC274B variants. This package supports manual soldering and socket-based prototyping.

Can TLC274BCNG4 operate from a 3.3 V supply?

Yes, the TLC274BCNG4 is fully specified to operate from 3 V minimum supply voltage over 0°C to 70°C - making it compatible with 3.3 V systems. At VDD = 3.3 V, it maintains functional output swing (down to GND and up to ~3.25 V), usable bandwidth (~1 MHz small-signal), and input common-mode range (–0.1 V to ~2.3 V). Performance parameters like slew rate and GBW scale downward with supply voltage, but the core precision functions remain valid per the C-suffix operating conditions table.

How should unused op-amp sections in TLC274BCNG4 be configured?

Unused op-amp sections in the TLC274BCNG4 must be configured as unity-gain voltage followers with inputs tied to a stable voltage within the common-mode range (e.g., VDD/2 via resistor divider or buffered reference). Leaving inputs floating or unconnected risks oscillation due to high input impedance and parasitic coupling. TI's datasheet explicitly states this requirement in Section 6.1.2 to ensure stability and prevent increased supply current or thermal stress in the active channels of the TLC274BCNG4.