LF11331/LF13331/LF11332/LF13332/LF11333/

LF13333/LF11201/LF13201/LF11202/LF13202

Quad SPST JFET Analog Switches

General Description

These devices are a monolithic combination of bipolar and

JFET technology producing the industry’s first one chip quad

JFET switch. A unique circuit technique is employed to main-

tain a constant resistance over the analog voltage range of

levels,

and

switch

operation

also

ensures

a

break-before-make action.

plications where a dc to medium frequency analog signal

needs to be controlled.

Features

n Analog signals are not loaded

100 kHz

n Pin compatible with CMOS switches with the advantage

of blow out free handling

n Small signal analog signals to 50 MHz

n Break-before-make action:

t

n High open switch isolation at 1.0 MHz:

−50 dB

n Low leakage in “OFF” state:

n TTL, DTL, RTL compatibility

n Single disable pin opens all switches in package on

LF11331, LF11332, LF11333

n LF11201 is pin compatible with DG201

Test Circuit and Schematic Diagram

DS005667-2

FIGURE 1. Typical Circuit for One Switch

DS005667-12

FIGURE 2. Schematic Diagram (Normally Open)

January 1995

© 1999 National Semiconductor Corporation

DS005667

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