15 Ohm SPDT switch for signal routing
The Texas Instruments 74LVC1G3157DRYRG4 is a single-pole double-throw (SPDT) analog switch with a maximum on-state resistance of 15 Ohm, designed for routing analog or digital signals in space-constrained designs. The switch handles both analog and digital signals up to the supply rail, with a -3 dB bandwidth of 300 MHz that supports high-speed interfaces such as USB 2.0 full-speed, LVDS, or video switching.
Industrial temperature and leadless footprint
The switching times are fast — 5.7 ns typical turn-on and 3.8 ns turn-off — which keeps signal integrity clean in high-frequency paths without adding propagation delay that would violate setup-and-hold margins.
Signal integrity specs for analog paths
Crosstalk is specified at -54 dB at 10 MHz, which keeps channel-to-channel bleed below the noise floor for 10-bit analog multiplexing or audio line-level switching. Charge injection is 7 pC typical — low enough that sample-and-hold droop from the switching glitch stays within a few millivolts when driving a 10 pF hold capacitor. Channel-to-channel on-resistance matching is 100 mOhm max, ensuring balanced attenuation between the two signal paths in differential or matched-gain applications. Off-state leakage current is limited to 1 µA max, which prevents signal loading when the switch is open and keeps the output impedance high.