Texas Instruments TLC274CDBR

Overview

TLC274CDBR from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 10 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 high input impedance (>10¹² Ω) for low-level sensor signal conditioning in industrial instrumentation.

For engineers reviewing the TLC274CDBR datasheet, TLC274CDBR pinout, TLC274CDBR application, or TLC274CDBR equivalent, key selection considerations include its C-suffix grade offset voltage tolerance, SSOP-14 package footprint compatibility, single-supply common-mode range extending below GND, and suitability for precision analog front-ends where BiFET performance is needed at CMOS power efficiency.

Technical Context

The TLC274CDBR uses a polysilicon-gate CMOS process enabling ultra-low input bias current (10–60 pA typ), low offset drift (0.3 µV/°C), and latch-up immunity. Its input stage supports common-mode voltages down to –0.1 V (at VDD = 5 V), while the output stage drives to GND with 50 mV low-level saturation under load.

It achieves 4.5 MHz unity-gain bandwidth and 0.5 V/µs slew rate at unity gain with 10 kΩ load and 20 pF capacitance, supporting stable closed-loop configurations up to G = 100. Common-mode rejection (65–80 dB) and supply-voltage rejection (65–120 dB) remain effective across its full operating temperature range.

Key Specifications

Pinout & Package

Package: SSOP-14 (DB), 6.2 mm × 7.8 mm body, 0.65 mm lead pitch, surface-mount, moisture-sensitive level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC274CDR and TLC277CPW, the TLC274CDBR offers optimal balance of quad integration, SSOP-14 compactness, and C-grade offset performance - making it preferred for space-constrained industrial and medical PCBs requiring four matched amplifiers without trimming.

Availability

TLC274CDBR is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, medical instrumentation front-ends, and automotive cabin environment sensing requiring stable component supply and long-term production continuity.

Supply support for TLC274CDBR 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 op-amp design and manufacturing.

The TLC27xx family was engineered to deliver BiFET-like precision and speed using CMOS process advantages - targeting cost-sensitive, low-power, single-supply applications in industrial, medical, and test equipment.

FAQ

What is the maximum operating temperature range for the TLC274CDBR?

The TLC274CDBR is rated for 0°C to 70°C operation, as indicated by its "C" suffix. This range is validated per TI's SLOS092E datasheet, with guaranteed performance for parameters including input offset voltage (10 mV max), supply current (2.24–6.4 mA), and common-mode input range (–0.1 V to 3.5 V at VDD = 5 V). Operation outside this range is not characterized or warranted.

Does the TLC274CDBR support true rail-to-rail input?

No - the TLC274CDBR features a common-mode input voltage range that extends *below* the negative rail (to –0.1 V at VDD = 5 V), but its upper limit is VDD – 1 V at 25°C (e.g., 4 V max when VDD = 5 V). It does not accept inputs at VDD. This asymmetric range is optimized for single-supply use with ground-referenced signals, not full rail-to-rail input operation.

Can unused channels of the TLC274CDBR be left floating?

No - unused amplifiers in the TLC274CDBR must be configured as grounded unity-gain followers (noninverting input tied to GND, output connected to inverting input) to prevent oscillation or unpredictable output states. Leaving inputs or outputs unconnected risks instability due to internal node coupling and high input impedance susceptibility to noise.

What is the typical input bias current of the TLC274CDBR at 25°C?

The typical input bias current of the TLC274CDBR is 10–60 pA at 25°C, as specified in Section 4.3 of the SLOS092E datasheet. This ultra-low value results from its polysilicon-gate CMOS input stage and enables use with high-value resistive networks (e.g., >1 MΩ) without introducing significant DC error - critical for precision sensor interfaces.

Is the TLC274CDBR pin-compatible with the TLC274CDR?

No - the TLC274CDBR (SSOP-14, 6.2 mm × 7.8 mm) and TLC274CDR (SOIC-14, 8.65 mm × 6 mm) have different footprints, pad layouts, and lead pitches (0.65 mm vs. 1.27 mm). While both contain identical electrical functionality and pin numbering, they are not mechanically interchangeable; PCB redesign is required to switch between them.