240 Ohm on-resistance and 30 MHz bandwidth — what they mean for signal integrity
The 240 Ohm maximum on-state resistance (Ron) is typical for the CD4000 logic family — adequate for low-frequency analog signals up to a few hundred kHz where the switch resistance is negligible compared to the load impedance. The 30 MHz -3 dB bandwidth confirms the part can pass higher-frequency signals, but the Ron and 9 pF off-channel capacitance (CD(off)) will attenuate signals above a few MHz unless the load impedance is high. For precision DC or low-frequency sensor signals, the 5 Ohm channel-to-channel Ron matching (ΔRon) ensures consistent gain across channels.
Automotive temperature range and supply flexibility
The single-supply range of 3 V to 20 V or dual-supply range of ±2.5 V to ±9 V gives flexibility to interface with 5 V, 12 V, or ±5 V analog rails common in automotive sensor chains. The 100 nA max off-leakage current (IS(off)) keeps signal errors low in high-impedance circuits.
No official second-source or pin-compatible replacement is listed on the manufacturer's cross-reference, but the base CD4053 function is widely second-sourced across the industry — confirm pin compatibility with the target BOM position.