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
10V. The input is designed to operate from minimum TTL
levels,
and
switch
operation
also
ensures
a
break-before-make action.
These devices operate from
15V supplies and swing a
10V analog signal. The JFET switches are designed for ap-
plications where a dc to medium frequency analog signal
needs to be controlled.
Features
n
Analog signals are not loaded
n
Constant "ON" resistance for signals up to
10V and
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
OFF
<
t
ON
n
High open switch isolation at 1.0 MHz:
-50 dB
n
Low leakage in "OFF" state:
<
1.0 nA
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
LF1
1331/LF13331/LF1
1332/LF13332/LF1
1333/LF13333/LF1
1201/LF13201/LF1
1202/LF13202
Quad
SPST
JFET
Analog
Switches
1999 National Semiconductor Corporation
DS005667
www.national.com
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 2)
Supply Voltage (V
CC
-V
EE
)
36V
Reference Voltage
V
EE
V
R
V
CC
Logic Input Voltage
V
R
-4.0V
V
IN
V
R
+6.0V
Analog Voltage
V
EE
V
A
V
CC
+6V;
V
A
V
EE
+36V
Analog Current
|I
A
|
<
20 mA
Power Dissipation (Note 3)
Molded DIP (N Suffix)
500 mW
Cavity DIP (D Suffix)
900 mW
Operating Temperature Range
LF11201, 2 and LF11331, 2, 3
-55C to +125C
LF13201, 2 and LF13331, 2, 3
0C to +70C
Storage Temperature
-65C to +150C
Soldering Information
N and D Package (10 sec.)
300C
SO Package:
Vapor Phase (60 sec.)
215C
Infrared (15 sec.)
220C
Electrical Characteristics
(Note 4)
LF11331/2/3
LF13331/2/3
Symbol
Parameter
Conditions
LF11201/2
LF13201/2
Units
Min
Typ
Max
Min
Typ
Max
R
ON
"ON" Resistance
V
A
=0, I
D
=1 mA
T
A
=25C
150
200
150
250
200
300
200
350
R
ON
Match
"ON" Resistance Matching
T
A
=25C
5
20
10
50
V
A
Analog Range
10
11
10
11
V
I
S(ON) +
Leakage Current in "ON" Condition
Switch "ON," V
S
=V
D
=
10V
T
A
=25C
0.3
5
0.3
10
nA
I
D(ON)
3
100
3
30
nA
I
S(OFF)
Source Current in "OFF" Condition
Switch "OFF," V
S
=+10V,
T
A
=25C
0.4
5
0.4
10
nA
V
D
=-10V
3
100
3
30
nA
I
D(OFF)
Drain Current in "OFF" Condition
Switch "OFF," V
S
=+10V,
T
A
=25C
0.1
5
0.1
10
nA
V
D
=-10V
3
100
3
30
nA
V
INH
Logical "1" Input Voltage
2.0
2.0
V
V
INL
Logical "0" Input Voltage
0.8
0.8
V
I
INH
Logical "1" Input Current
V
IN
=5V
T
A
=25C
3.6
10
25
3.6
40
100
A
I
INL
Logical "0" Input Current
V
IN
=0.8
T
A
=25C
0.1
0.1
A
1
1
A
t
ON
Delay Time "ON"
V
S
=
10V, (
Figure 3
)
T
A
=25C
500
500
ns
t
OFF
Delay Time "OFF"
V
S
=
10V, (
Figure 3
)
T
A
=25C
90
90
ns
t
ON
-t
OFF
Break-Before-Make
V
S
=
10V, (
Figure 3
)
T
A
=25C
80
80
ns
C
S(OFF)
Source Capacitance
Switch "OFF," V
S
=
10V
T
A
=25C
4.0
4.0
pF
C
D(OFF)
Drain Capacitance
Switch "OFF," V
D
=
10V
T
A
=25C
3.0
3.0
pF
C
S(ON) +
Active Source and Drain Capacitance
Switch "ON," V
S
=V
D
=0V
T
A
=25C
5.0
5.0
pF
C
D(ON)
I
SO(OFF)
"OFF" Isolation
(
Figure 4
), (Note 5)
T
A
=25C
-50
-50
dB
CT
Crosstalk
(
Figure 4
), (Note 5)
T
A
=25C
-65
-65
dB
SR
Analog Slew Rate
(Note 6)
T
A
=25C
50
50
V/s
I
DIS
Disable Current
(
Figure 5
), (Note 7)
T
A
=25C
0.4
1.0
0.6
1.5
mA
0.6
1.5
0.9
2.3
mA
I
EE
Negative Supply Current
All Switches "OFF," V
S
=
10V
T
A
=25C
3.0
5.0
4.3
7.0
mA
4.2
7.5
6.0
10.5
mA
I
R
Reference Supply Current
All Switches "OFF," V
S
=
10V
T
A
=25C
2.0
4.0
2.7
5.0
mA
2.8
6.0
3.8
7.5
mA
I
CC
Positive Supply Current
All Switches "OFF," V
S
=
10V
T
A
=25C
4.5
6.0
7.0
9.0
mA
6.3
9.0
9.8
13.5
mA
Note 1: "Absolute Maximum Ratings" indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2: Refer to RETSF11201X, RETSF11331X, RETSF11332X and RETSF11333X for military specifications.
Note 3: For operating at high temperature the molded DIP products must be derated based on a +100C maximum junction temperature and a thermal resistance
of +150C/W, devices in the cavity DIP are based on a +150C maximum junction temperature and are derated at
100C/W.
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2
Electrical Characteristics
(Note 4) (Continued)
Note 4: Unless otherwise specified, V
CC
=+15V, V
EE
=-15V, V
R
=0V, and limits apply for -55C
T
A
+125C for the LF11331/2/3 and the LF11201/2,
-25C
T
A
+85C for the LF13331/2/3 and the LF13201/2.
Note 5: These parameters are limited by the pin to pin capacitance of the package.
Note 6: This is the analog signal slew rate above which the signal is distorted as a result of finite internal slew rates.
Note 7: All switches in the device are turned "OFF" by saturating a transistor at the disable node as shown in
Figure 5. The delay time will be approximately equal
to the t
ON
or t
OFF
plus the delay introduced by the external transistor.
Note 8: This graph indicates the analog current at which 1% of the analog current is lost when the drain is positive with respect to the source.
Note 9:
JA
(Typical) Thermal Resistance
Molded DIP (N)
85C/W
Cavity DIP (D)
100C/W
Small Outline (M)
105C/W
Connection Diagrams
(Top View for SO and Dual-In-Line Packages) (All Switches Shown are For Logical "0")
LF11331/LF13331
DS005667-1
LF11332/LF13332
DS005667-13
LF11333/LF13333
DS005667-14
LF11201/LF13201
DS005667-15
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3
Connection Diagrams
(Top View for SO and Dual-In-Line Packages) (All Switches Shown are For Logical
"0") (Continued)
LF11202/LF13202
DS005667-16
Order Number LF13201D, LF11201D, LF11201D/883, LF13202D, LF11202D, LF11202D/883, LF13331D, LF11331D,
LF11331D/883, LF13332D, LF11332D, LF11332D/883, LF13333D, LF11333D or LH11333D/883
See NS Package Number D16C
Order Number LF13201M, LF13202M, LF13331M, LF13332M or LF13333M
See NS Package Number M16A
Order Number LF13201N, LF13202N, LF13331N, LF13332N or LF13333N
See NS Package Number N16A
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4
Test Circuit and Typical Performance Curves
Delay Time, Rise Time, Settling Time, and
Switching Transients
DS005667-17
DS005667-18
DS005667-19
DS005667-20
DS005667-21
DS005667-22
www.national.com
5
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