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FSAT66 Low Voltage Single SPST Normally Open Analog Switch with TTL Compatible Control Input
April 2003
Revised July 2004
FSAT66
Low Voltage Single SPST Normally Open Analog Switch
with TTL Compatible Control Input
General Description
The FSAT66 is a high speed single pole/single throw nor-
mally open Analog Switch with a TTL compatible control
input and is fabricated on a sub-micron CMOS process.
The low On Resistance of the switch allows input to be
connected to output with minimal propagation delay and
without generating additional ground bounce noise. The
device is organized as a 1-bit switch with a switch enable
(OE) signal. When OE is HIGH, the switch is on and Port A
is connected to Port B. When OE is LOW, the switch is
open and a high-impedance state exists between the two
ports.
Features
s
Space saving SC70 5-lead package
s
Ultra small MicroPak
leadless package
s
Broad V
CC
Operating Range 1.65V to 5.5V
s
Rail-to-rail signal handling
s
5
Ω
switch connection between two ports
s
Minimal propagation delay through the switch
s
Low I
CC
s
Zero bounce in flow-through mode
s
Control input compatible with TTL input levels
s
>
250 MHz–3dB bandwidth
Ordering Code:
Product
Order
Number
FSAT66M5X
(Preliminary)
FSAT66P5X
FSAT66L6X
Package
Number
MA05B
MAA05A
MAC06A
Code
Top Mark
AT66
T66
EF
5-Lead SOT23, JEDEC MO-178, 1.6mm
5-Lead SC70, EIAJ SC-88a, 1.25mm Wide
6-Lead MicroPak, 1.0mm Wide
3K Units on Tape and Reel
3K Units on Tape and Reel
5K Units on Tape and Reel
Package Description
Supplied As
MicroPak is a trademark of Fairchild Semiconductor Corporation.
© 2004 Fairchild Semiconductor Corporation
DS500862
www.fairchildsemi.com
FSAT66
Logic Symbol
Analog Symbol
Pin Descriptions
Pin Names
OE
A
B
NC
Description
Switch Enable Input
Bus A I/O
Bus B I/O
No Connect
Connection Diagrams
Pin Assignments for SOT23 and SC70
Function Table
OE
L
H
H
=
HIGH Logic Level
B
0
High-Z State
A
0
L
=
LOW Logic Level
Function
Disconnect
Connect
(Top View)
Pad Assignments for MicroPak
(Top Thru View)
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2
FSAT66
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
)
DC Switch Voltage (V
S
)
DC Input Voltage (V
IN
) (Note 2)
DC Input Diode Current
@ (I
IK
) V
IN
<
0V
DC Output (I
OUT
) Sink Current
DC V
CC
or Ground Current (I
CC
/I
GND
)
Storage Temperature Range (T
STG
)
Junction Lead Temperature
under Bias (T
J
)
Junction Lead Temperature (T
L
)
(Soldering, 10 Seconds)
Power Dissipation (P
D
) @
+
85
°
C
SC70-5
MicroPak-6
150 mW
200 mW
−
0.5V to
+
7.0V
−
0.5V to V
CC
+
0.5V
−
0.5V to
+
7.0V
−
50 mA
±
128 mA
±
100 mA
−
65
°
C to
+
150
°
C
+
150
°
C
+
260
°
C
Recommended Operating
Conditions
(Note 3)
Power Supply Voltage (V
CC
)
Control Input Voltage (V
IN
)
Switch Input Voltage (V
IN
)
Switch Output Voltage (V
OUT
)
Input Rise and Fall Time (t
r
, t
f
)
Control Input V
CC
=
2.3V to 3.6V
Control Input V
CC
=
4.5V to 5.5V
Switch I/O
Operating Temperature (T
A
)
Thermal Resistance (
θ
JA
)
SC70-5
MicroPak-6
425
°
C/Watt
325
°
C/Watt
0 ns/V to 10 ns/V
0 ns/V to 5 ns/V
0 ns/V to DC
1.65V to 5.5V
0V to 5.5V
0V to V
CC
0V to V
CC
−
40
°
C to
+
85
°
C
Note 1:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Note 2:
The input and output negative voltage ratings may be exceeded if
the input and output diode current ratings are observed.
Note 3:
Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
V
IH
V
IL
I
IN
I
OFF
R
ON
Parameter
HIGH Level Input
Voltage
LOW Level Input
Voltage
Control Input
Leakage Current
OFF Leakage Current
Switch On Resistance
(Note 5)
4.5
V
CC
(V)
4.5 to 5.5
4.5 to 5.5
1.65 to 3.6
0 to 5.5
1.65 to 5.5
3.0
5.0
7.0
3.0
2.3
1.65
R
flat
On Resistance Flatness
(Note 5)(Note 6)
(Note 7)
I
CC
Quiescent Supply
Current
5.0
3.3
2.5
1.8
1.65 to 5.5
10.0
4.0
10.0
5.0
13.0
7.0
25.0
T
A
= −40°C
to
+85°C
Min
2.0
0.8
0.165 V
CC
±1.0
±10.0
7.0
12.0
15.0
9.0
20.0
12.0
30.0
28.0
60.0
6.0
12.0
28.0
125
µA
Ω
Ω
Typ
(Note 4)
Max
Min
T
A
= +25°C
Typ
Max
Units
Conditions
1.65 to 3.6 (0.25 V
CC
+
0.75)
V
V
µA
µA
0
≤
V
IN
≤
5.5V
0
≤
A, B
≤
V
CC
V
IN
=
0V, I
IN
=
30 mA
V
IN
=
2.4V, I
IN
=
15 mA
V
IN
=
4.5V, I
IN
=
30 mA
V
IN
=
0V, I
IN
=
24 mA
V
IN
=
3V, I
IN
=
24 mA
V
IN
=
0V, I
IN
=
8 mA
V
IN
=
2.3V, I
IN
=
8 mA
V
IN
=
0V, I
IN
=
4 mA
V
IN
=
1.65V, I
IN
=
4 mA
I
A
= −30
mA, 0
≤
V
Bn
≤
V
CC
I
A
= −24
mA, 0
≤
V
Bn
≤
V
CC
I
A
= −8
mA, 0
≤
V
Bn
≤
V
CC
I
A
= −4
mA, 0
≤
V
Bn
≤
V
CC
V
IN
=
V
CC
or GND
I
OUT
=
0
Note 4:
All typical values are at the specified V
CC
, and T
A
=
25°C.
Note 5:
Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the
voltages on the two (A or B) pins.
Note 6:
Parameter is characterized but not tested in production.
Note 7:
Flatness is defined as the difference between the minimum and maximum value of On Resistance over the specified range of conditions.
3
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FSAT66
AC Electrical Characteristics
Symbol
t
PHL
, t
PLH
Parameter
V
CC
(V)
T
A
= −40°C
to
+85°C
Min
Typ
(Note 8)
2.0
1.1
0.7
0.35
1.5
1.2
0.8
0.5
2.5
2.0
1.5
1.0
4.0
2.5
2.0
1.5
7.5
5.5
4.5
3.5
0.05
−50.0
>250
.011
Max
4.3
2.5
1.5
1.0
12.0
7.0
5.5
4.5
15.0
9.0
7.0
5.5
pC
dB
MHz
%
C
L
=
0.1 nF, V
GEN
=
0V,
R
GEN
=
0
Ω,
f
=
1 MHz
OIRR
BW
THD
Off Isolation (Note 11)
−3dB
Bandwidth
Total Harmonic Distortion
(Note 8)
5.0
1.65 to 5.5
1.65 to 5.5
R
L
=
50
Ω,
C
L
=
5 pF,
f
=
10 MHz
R
L
=
50
Ω
R
L
=
600Ω
0.5 V
P-P
f
=
600 Hz to 20 KHz
Note 8:
All typical values are at the specified V
CC
, and T
A
=
25°C.
Note 9:
This parameter is guaranteed by design but is not tested. The switch contributes no propagation delay other than the RC delay of the On Resistance
of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance).
Note 10:
Guaranteed by design.
Note 11:
Off Isolation
=
20 log
10
[V
A
/V
Bn
]
Units
Conditions
Figure
Number
Propagation Delay Bus to Bus 1.65 to 1.95
(Note 9)
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
ns
V
IN
=
OPEN
Figures
1, 2
t
PZL
, t
PZH
Output Enable Time
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
ns
V
IN
=
2 x V
CC
for t
PZL
V
IN
=
0V for t
PZH
Figures
1, 2
t
PLZ
, t
PHZ
Output Disable Time
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
ns
V
IN
=
2 x V
CC
for t
PLZ
V
IN
=
0V for t
PHZ
Figures
1, 2
Q
Charge Injection (Note 10)
1.65 to 5.5
Figure 3
Figure 4
Figure 5
Capacitance
Symbol
C
IN
C
I/O OFF
C
I/O ON
Parameter
Control Pin Input Capacitance
Input/Output Capacitance
Input/Output Capacitance
Typ
2.0
6.0
12.0
Max
Units
pF
pF
pF
V
CC
=
0V
V
CC
=
5.0V, OE
=
0.0V
V
CC
=
5.0V, OE
=
V
CC
Conditions
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4
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