Single CMOS op-amp for low-power signal chains
The TLC251CPW: Its input bias current of 0.6 pA makes it a strong fit for high-impedance sensor interfaces — photodiode amplifiers, pH probe buffers, or electrochemical sensor front-ends — where bias current errors would otherwise dominate the offset budget. The supply current of 675 µA per amplifier keeps the power allocation tight in multi-channel or battery-operated designs. The supply voltage span from 1.4 V to 16 V covers single-cell lithium-ion through 12 V industrial rails, so the same part can serve portable instruments and fixed equipment without a rail change.
Package and footprint — 8-TSSOP
The TLC251CPW is supplied in an 8-TSSOP package (0.173" body width, 4.40 mm nominal width) with a surface-mount footprint. The 8-TSSOP body is narrower than the more common SOIC-8, so the PCB land pattern must match the 0.65 mm pin pitch.
That means it remains a valid choice for new BOM entries and production builds without an imminent obsolescence risk.