TLC271ACDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OFFSET N1	passive	Offset null pin 1. Connects to an external trimming potentiometer (typically 10 kΩ, wiper to VDD) together with OFFSET N2 to null the input offset voltage.
2	IN-	input	Inverting op-amp input. High-impedance CMOS gate input (~10^12 Ω). Voltage range −0.3 V to VDD; input current limited to ±5 mA absolute maximum.
3	IN+	input	Non-inverting op-amp input. High-impedance CMOS gate input (~10^12 Ω). Common-mode range extends below the negative rail (−0.2 V to VDD−1.5 V typical at VDD=5 V).
4	GND	power_in	Negative supply / ground reference. Tie to 0 V for single-supply operation or to V− for split-supply operation. All voltages are referenced to this pin.
5	OFFSET N2	passive	Offset null pin 2. Paired with OFFSET N1 across an external trim potentiometer (wiper to VDD) to null the input offset voltage.
6	OUT	output	Op-amp output. Rail-to-negative-rail swing; can source/sink up to ±30 mA (absolute max) and withstands short-circuit to either supply indefinitely at ≤25 °C.
7	VDD	power_in	Positive supply voltage. 3 V to 16 V (C suffix), 18 V absolute maximum. Bypass locally with a 0.01 µF ceramic capacitor to GND.
8	BIAS SELECT	input	Programs the op-amp internal bias current. Tie to GND for HIGH-bias mode (max speed, PD≈3.4 mW, GBW≈1.7 MHz), to a voltage between 1 V and VDD−1 V for MEDIUM bias (PD≈0.5 mW, GBW≈0.5 MHz), or to VDD for LOW-bias mode (PD≈0.05 mW, GBW≈0.09 MHz). See Figure 1 for a single-supply resistor divider network.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

TLC271ACDR
TLC271ACDRBCD
TLC271ACDRBCDR
TLC271ACDRAID
TLC271ACDRBID
TLC271ACDRID
TLC271ACDRMD
TLC271ACDRACP
TLC271ACDRBCP
TLC271ACDRCP
TLC271ACDRAIP
TLC271ACDRBIP
TLC271ACDRIP
TLC271ACDRMP
TLC271ACDRMJG
TLC271ACDRMFK

CAD (KiCad official)

Symbol: TLC271ACDR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (85 pp, sha256 37007090ec539bf8, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF