SN74LVC1G66DBVR

SN74LVC1G66DBVR is a Texas Instruments single-pole single-throw bilateral analog switch in a SOT-23-5 package — one 1:1 switch in the LVC single-gate format, running from 1.65 V to 5.5 V with roughly 5.5 Ω typical on-resistance at 4.5 V, 300 MHz bandwidth and 13 pF typical on-capacitance, over −40 to +85 °C. It passes analog or digital signals up to the supply rail, for signal gating, audio mute and bus isolation on space-constrained boards. Selection advice: the DBVR code is the SOT-23-5 tape-and-reel packing; the identical switch in the smaller SC70-5 footprint is the SN74LVC1G66DCKR, also listed on this site — choose by footprint, and check the on-resistance against your signal source impedance, since a few ohms of switch resistance matters in precision paths. TI lists this code as Active (Production). Parameters verified against Texas Instruments documentation.