8:1 analog multiplexer in a through-hole DIP
The DG508ACJ+: It routes one of eight inputs to a common output, controlled by a 3-bit address line. Maximum on-state resistance is 450 Ohm, with channel-to-channel matching of 27 Ohm — the spread between channels is tight enough that gain error across the mux bank stays within a few percent in a precision signal chain. Switching times are 1.5 µs turn-on and 1 µs turn-off, which suits scanned-data acquisition at moderate sample rates — the mux settles before the downstream ADC samples, provided the ADC's acquisition time is budgeted accordingly.
Supply rails and temperature range
Leakage current at the switch off-state is 1 nA maximum, and channel capacitance is 5 pF off and 25 pF on — the low off-capacitance keeps signal feedthrough minimal in multiplexed high-impedance sensor inputs.