The LF13508 is an 8-channel analog multiplexer which connects the output to 1 of the 8 analog inputs depending on the state of a 3-bit binary address An enable control allows disconnecting the output thereby providing a package select function This device is fabricated with National's BI-FET technology which provides ion-implanted JFETs for the analog switch on the same chip as the bipolar decode and switch drive circuitry This technology makes possible low constant ``ON'' resistance with analog input voltage variations This device does not suffer from latch-up problems or static charge blow-out problems associated with similar CMOS parts The digital inputs are designed to operate from both TTL and CMOS levels while always providing a definite break-before-make action