LF13509 - National Semiconductor

LF13509 (LF13508) 4-Channel Differential Analog Multiplexer

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.

Features

of the LF13508 series and should be used whenever differential analog inputs are required Features Y Y Y Y Y Y Y Y Y Y JFET switches rather than CMOS No static discharge blow-out problem No SCR latch-up problems Analog signal range 11V b15V Constant ‘‘ON’’ resistance for analog signals between b 11V and 11V ‘‘ON’’ resistance 380 X typ Digital inputs compatible with TTL and CMOS Output enable control Break-before-make action tOFF e 0 2 ms tON e 2 ms typ Lower leakage devices available Functional Diagrams and Truth Tables LF13508 EN H H H H H H H H L LF13509 EN L H H H H A1 X L L H H A0 X L .