Texas Instruments TLC274BCNS

Overview

TLC274BCNS from Texas Instruments is a precision quad CMOS 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 GND. It operates from 3 V to 16 V over 0°C to 70°C and delivers 4.5 MHz unity-gain bandwidth - ideal for sensor signal conditioning in industrial instrumentation.

For engineers reviewing the TLC274BCNS datasheet, TLC274BCNS pinout, TLC274BCNS application, or TLC274BCNS equivalent, key selection criteria include its low input bias current (<60 pA), wide common-mode input range extending below GND, high PSRR (≥65 dB), and compatibility with 14-pin SOP (NS) packaging for space-constrained analog front-ends.

Technical Context

The TLC274BCNS uses a polysilicon-gate CMOS process to achieve ultra-high input impedance (>10¹² Ω) and sub-picoampere input bias current, enabling high-impedance sensor interfacing without significant loading error. Its input stage supports common-mode voltages down to –0.1 V (at VDD = 5 V), and output swings within 50 mV of GND and 0.05 V of VDD.

Designed for single-supply systems, it avoids split-rail complexity while maintaining precision via low offset drift (0.3 µV/°C) and robust supply rejection (kSVR ≥65 dB). The quad architecture allows independent channel use in multi-channel data acquisition, active filtering, and transducer amplification without cross-talk.

Key Specifications

Pinout & Package

Package: NS (SOP-14), 10.2 mm × 7.8 mm body size with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2464IDR, TLC274BCNS offers lower power (6.4 mA vs 2.1 mA total) and superior noise performance but looser offset spec; versus LM324DR, it provides 3.5× lower input bias current, 2× lower noise, and guaranteed single-supply functionality - making it the preferred choice for precision analog signal chains.

Availability

TLC274BCNS is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable test equipment, and analog front-end modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TLC274BCNS 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 op-amp design and manufacturing.

The TLC27xx family was engineered for high-accuracy, low-power analog signal conditioning in single-supply systems - targeting industrial automation, test & measurement, and sensor interface applications where CMOS input advantages are critical.

FAQ

What is the maximum operating temperature range for the TLC274BCNS?

The TLC274BCNS is rated for operation from 0°C to 70°C (C-suffix grade). This range is validated per TI's SLOS092E datasheet, with specifications guaranteed across the full interval - including input offset voltage (2000 µV max), supply current (6.4 mA max), and common-mode input range (–0.1 V to VDD – 1 V).

Does the TLC274BCNS support true rail-to-rail input operation?

The TLC274BCNS does not support rail-to-rail input - its common-mode input range extends to –0.1 V (below GND) and up to VDD – 1 V (not VDD). However, it does provide rail-to-rail output swing (0 V to VDD – 0.05 V), making it suitable for single-supply systems where input referencing is managed externally.

Can unused channels of the TLC274BCNS be left floating?

No - unused channels of the TLC274BCNS must be configured as unity-gain voltage followers (noninverting, output tied to inverting input, noninverting input biased within common-mode range) to prevent oscillation or excessive current draw. Leaving inputs unconnected risks instability due to internal node coupling.

What is the typical input capacitance of the TLC274BCNS?

The TLC274BCNS exhibits typical input capacitance of 5 pF per input terminal (IN+ and IN–), as derived from TI's application notes on layout for high-impedance CMOS op-amps. This value impacts stability in high-frequency feedback networks and requires careful PCB routing to minimize stray capacitance.

Is the TLC274BCNS pin-compatible with other TLC274 variants like TLC274CDR?

Yes - the TLC274BCNS (NS package) shares identical pinout and footprint with all TLC274x variants in SOP-14 (NS) packaging, including TLC274CDR and TLC274BIDR. Electrical differences (e.g., offset voltage grade, temperature range) do not affect mechanical or connection compatibility.