Dual SPDT analog switch with 4 Ohm on-resistance
The MAX4636EUB+T is a dual SPDT analog switch in a 10-uMAX/uSOP package. Each switch routes a common input to one of two outputs with a maximum on-resistance of 4 Ohm. Typical applications include audio signal switching, data acquisition systems, and analog multiplexing in industrial and consumer electronics. The industrial temperature range of -40°C to 85°C covers most indoor and outdoor equipment, though it is not rated for extended automotive under-hood environments.
Key specs and what they mean for the BOM
The 4 Ohm on-resistance minimizes signal attenuation in typical audio impedance paths. Channel-to-channel matching of 100 mOhm ensures the two switch paths track each other closely. Charge injection of 2pC is the charge dumped onto the signal line each time the switch turns off. The -67 dB crosstalk at 1 MHz means leakage between channels is at -67 dB relative to the carrier. Switch times of 14 ns on and 6 ns off are fast enough for most analog multiplexing tasks up to a few megahertz, but not intended for high-speed digital switching like USB 2.0. The 100 pA max off-leakage and 9 pF channel capacitance keep the signal path clean even in high-impedance sensor circuits.
Package and mounting
The part is offered in a 10-pin TFSOP/MSOP package (3.00 mm width) with a surface-mount footprint. Cut Tape is also available for prototype builds. The 10-uMAX/uSOP body is compact enough for space-constrained PCBs but still hand-solderable with a fine-tip iron.
Sourcing and lifecycle
The MAX4636EUB+T carries an Active lifecycle status and is ROHS3 compliant. No second-source alternate is listed in the official records, but the MAX4636EUB (non-tape) is the same die in a different shipping medium.