LF11508 Datasheet | National Semiconductor

a LF1 1 508/LF1 2508/LF1 3508 8-Channel Analog Multiplexer LF1 1 509/LF1 2509/LF1 3509 4-Channel Differential Analog Multiplexer General Description The LF11508/LF12508/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. connect a pair of independent analog inputs to one of any 4 pairs of independent analog outputs. The device has all the Features of the LF1 1508 series and should be used whenever differential analog inputs are required. 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. The LF11509/LF12509/LF13509 is a 4-channel dif- A ferential analog multiplexer. 2-bit binary address will Features JFET switches rather than CMOS No static discharge blow-out problem No SCR latch-up problems Analog signal range 1 1V, - 15V Constant "ON" resistance for analog signals between -11V and 11V "ON" resistance 380 12 typ Digital inputs patible with TTL and CMOS Output enable control Break-before-make action: t OFF = 0-2 Ms; t QN = 2 /is typ Functional Diagrams and Truth Tables LF11508/LF12508/LF13508 M? A2 A1 1 OF 8 DECODER ir H 606066066 S7 S6 S5 S4 S3 S2 SWITCH A2 A1 S2...