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LF13509D Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LF13509D
Description  8-Channel Analog Multiplexer
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LF13509D Datasheet(HTML) 1 Page - National Semiconductor (TI)

 
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TLH5668
January 1995
LF13508 8-Channel Analog Multiplexer
LF13509 4-Channel Differential Analog Multiplexer
General Description
The LF13508 is an 8-channel analog multiplexer which con-
nects 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 se-
lect 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
The LF13509 is a 4-channel differential analog multiplexer
A 2-bit binary address will 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 LF13508
series and should be used whenever differential analog in-
puts are required
Features
Y
JFET switches rather than CMOS
Y
No static discharge blow-out problem
Y
No SCR latch-up problems
Y
Analog signal range 11V b15V
Y
Constant ‘‘ON’’ resistance for analog signals between
b
11V and 11V
Y
‘‘ON’’ resistance 380 X typ
Y
Digital inputs compatible with TTL and CMOS
Y
Output enable control
Y
Break-before-make action tOFFe02 ms tONe2 ms typ
Y
Lower leakage devices available
Functional Diagrams and Truth Tables
LF13508
EN
A2
A1
A0
SWITCH
ON
H
LLL
S1
HL
L
H
S2
H
LHL
S3
HL
H
H
S4
HH
L
L
S5
H
HLH
S6
HH
H
L
S7
H
HHH
S8
L
X
X
X
NONE
LF13509
EN
A1
A0
SWITCH
PAIR ON
L
X
X
None
HL
L
S1
HL
H
S2
HH
L
S3
HH
H
S4
TLH5668 – 1
C1995 National Semiconductor Corporation
RRD-B30M115Printed in U S A


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