© 2005 Fairchild Semiconductor Corporation
DS500373
www.fairchildsemi.com
May 2000
Revised December 2005
FSA26
6
· NC7
WB6
6
Lo
w
V
o
lt
age
Dual SPST Norma
l
l
y
O
p
e
n
Anal
og S
w
it
ch or
2-
Bi
t Bus S
w
it
ch
FSA266 · NC7WB66
Low Voltage Dual SPST
Normally Open Analog Switch or 2-Bit Bus Switch
General Description
The FSA266 or NC7WB66 is an ultra high-speed (UHS) dual
single-pole/single-throw (SPST) analog switch or 2-bit bus
switch. The device is fabricated with advanced sub-micron
CMOS technology to achieve high speed enable and disable
times and low On Resistance over a broad V
CC
range. The
device is specified to operate over the 1.65 to 5.5V V
CC
operat-
ing range. The device is organized as a dual switch with inde-
pendent CMOS compatible switch enable (OE) controls. 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. The enable inputs tolerate
voltages up to 5.5V independent of the V
CC
operating range.
Features
O
Useful in both analog and digital applications
O
Space saving US8 surface mount package
O
MicroPak
¥
Pb-Free leadless package
O
Typical 7
:
On Resistance @ 5V V
CC
O
Broad V
CC
operating range: 1.65V to 5.5V
O
Rail-to-Rail signal handling
O
Power down high impedance control inputs
O
Control inputs are overvoltage tolerant
O
Control inputs are CMOS compatible
O !
300 MHz
3dB bandwidth
Ordering Code:
Pb-Free package per JEDEC J-STD-020B.
MicroPak
¥
is a trademark of Fairchild Semiconductor Corporation.
Product
Package Description
Supplied As
Order
Package
Code
Number
Number
Top Mark
FSA266K8X
MAB08A
WB66
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3K Units on Tape and Reel
FSA266L8X
MAC08A
P4
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
5K Units on Tape and Reel
NC7WB66K8X
MAB08A
WB66
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3K Units on Tape and Reel
NC7WB66L8X
MAC08A
P4
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
5K Units on Tape and Reel
www.fairchildsemi.com
2
FSA2
66
· NC7W
B
6
6
Logic Symbol
Analog Symbol
Pin Descriptions
Function Table
H
HIGH Logic Level
L
LOW Logic Level
Connection Diagrams
Pin Assignments for US8
(Top View)
Pad Assignments for MicroPak
(Top Through View)
Pin Names
Description
A
Switch Port A
B
Switch Port B
OE
Control Input
Switch Enable Input
(OE)
Function
L
Disconnect
H
B Connected to A
3
www.fairchildsemi.com
FSA26
6
· NC7
WB6
6
Absolute Maximum Ratings
(Note 1)
Recommended Operating
Conditions
(Note 3)
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 lim-
its. The parametric values defined in the Electrical Characteristics tables are not
guaranteed at the absolute maximum ratings. The "Recommended Operating Condi-
tions" 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
Note 4: 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 5: Guaranteed by design.
Note 6: Flatness is defined as the difference between the minimum and maximum value of ON Resistance over the specified range of conditions.
Supply Voltage (V
CC
)
0.5V to
7.0V
DC Switch Voltage (V
S
)
0.5V to V
CC
0.5V
DC Input Voltage (V
IN
) (Note 2)
0.5V to
7.0V
DC Input Diode Current
@ (I
IK
) V
IN
0V
50 mA
DC Switch Output Current (I
OUT
)
r
128 mA
DC V
CC
or Ground Current (I
CC
/I
GND
)
r
100 mA
Storage Temperature Range (T
STG
)
65
q
C to
150
q
C
Junction Lead Temperature
under Bias (T
J
)
150
q
C
Junction Lead Temperature (T
L
)
(Soldering, 10 Seconds)
260
q
C
Power Dissipation (P
D
) @
85
q
C
SC70-6
250 mW
Supply Voltage (V
CC
)
1.65V to 5.5V
Control Input Voltage (V
IN
)
0V to 5.5V
Switch Input Voltage (V
IN
)
0V to V
CC
Switch Output Voltage (V
OUT
)
0V to V
CC
Operating Temperature (T
A
)
40
q
C to
85
q
C
Input Rise and Fall Time (t
r
, t
f
)
Control Input V
CC
1.65V
2.7V
0 ns/V to 20 ns/V
Control Input V
CC
3.0V
3.6V
0 ns/V to 10 ns/V
Control Input V
CC
4.5V
5.5V
0 ns/V to 5 ns/V
Thermal Resistance (
T
JA
)
250
q
C/W
Symbol
Parameter
V
CC
T
A
25
q
C
T
A
40
q
C to
85
q
C
Units
Conditions
(V)
Min
Typ
Max
Min
Max
V
IH
HIGH Level Input Voltage
1.65 to 1.95
0.75 V
CC
0.75 V
CC
V
2.3 to 5.5
0.7 V
CC
0.7 V
CC
V
IL
LOW Level Input Voltage
1.65 to 1.95
0.25 V
CC
0.25V
CC
V
2.3 to 5.5
0.3 V
CC
0.3 V
CC
I
IN
Input Leakage Current
0 to 5.5
r
0.1
r
1.0
P
A
0
d
V
IN
d
5.5V
I
OFF
Switch OFF Leakage Current
1.65 to 5.5
r
0.1
r
1.0
P
A
0
d
A, B
d
V
CC
R
ON
Switch On Resistance
4.5
6.0
10.0
10.0
:
V
I
0V, I
O
30 mA
(Note 4)
7.0
13.5
13.5
V
I
2.4V, I
O
30 mA
6.0
10.0
10.0
V
I
4.5V, I
O
30 mA
3.0
7.5
15.0
15.0
:
V
I
0V, I
O
24 mA
8.5
15.0
15.0
V
I
3V, I
O
24 mA
2.3
9.0
20.0
20.0
:
V
I
0V, I
O
8 mA
10.5
20.0
20.0
V
I
2.3V, I
O
8 mA
1.65
12.5
30.0
30.0
:
V
I
0V, I
O
4 mA
17.0
30.0
30.0
V
I
1.65V, I
O
4 mA
I
CC
Quiescent Supply Current
5.5
1.0
10.0
P
A
V
IN
V
CC
or GND
All Channels ON or OFF
I
OUT
0
Analog Signal Range
V
CC
0
V
CC
0
V
CC
V
RRange
On Resistance Over
4.5
8.0
15.0
15.0
:
I
O
30 mA, 0
d
V
I
d
V
CC
Signal Range
3.0
15.0
30.0
30.0
I
O
24 mA, 0
d
V
I
d
V
CC
(Note 4)(Note 5)
2.3
45.0
75.0
75.0
I
O
8 mA, 0
d
V
I
d
V
CC
1.65
150
275
275
I
O
4 mA, 0
d
V
I
d
V
CC
'
R
ON
On Resistance Match
4.5
0.2
:
I
O
30 mA, V
I
3.15
Between Channels
3.0
0.2
I
O
24 mA, V
I
2.1
(Note 4)(Note 7)
2.3
0.5
I
O
8 mA, V
I
1.6
1.65
0.6
I
O
4 mA, V
I
1.15
R
flat
On Resistance Flatness
4.5
2.5
6.0
6.0
I
O
30 mA, 0
d
V
I
d
V
CC
(Note 4)(Note 5)(Note 6)
3.0
8.0
17.5
17.5
I
O
24 mA, 0
d
V
I
d
V
CC
2.3
33.0
60.0
60.0
I
O
8 mA, 0
d
V
I
d
V
CC
1.65
135
250
250
I
O
4 mA, 0
d
V
I
d
V
CC
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4
FSA2
66
· NC7W
B
6
6
DC Electrical Characteristics
(Continued)
Note 7:
'
R
ON
R
ON
max
R
ON
min measured at identical V
CC
, temperature and voltage levels.
AC Electrical Characteristics
Note 8: This parameter is guaranteed by design. The switch contributes no propagation delay other than the RC delay of the On Resistance of the switch and the 50 pF load
capacitance.
Note 9: Guaranteed by design.
Note 10: Off Isolation
20 log
10
[V
A
/V
Bn
]
Capacitance
Symbol
Parameter
V
CC
T
A
40
q
C to
85
q
C
Units
Conditions
Figure
(V)
Min
Typ
Max
Number
t
PHL
, t
PLH
Propagation Delay Bus-to-Bus
4.5 to 5.5
0.35
1.0
ns
(Note 8)
3.0 to 3.6
0.7
1.5
V
I
OPEN
Figures
1, 2
2.3 to 2.7
1.1
2.5
C
L
50 pF, RU
RD
500
:
1.65 to 1.95
2.0
4.0
t
PZL
, t
PZH
Output Enable Time
4.5 to 5.5
0.8
2.0
3.2
ns
Turn on Time
3.0 to 3.6
1.2
2.5
3.9
V
I
0V for t
PZH
Figures
1, 2
2.3 to 2.7
1.5
3.2
5.6
V
I
2 x V
CC
for t
PZL
1.65 to 1.95
2.5
5.7
10.0
C
L
50 pF, RU
RD
500
:
t
PLZ
, t
PHZ
Output Disable Time
4.5 to 5.5
0.8
2.6
4.1
ns
Turn Off Time
3.0 to 3.6
1.5
3.4
5.0
V
I
0V for t
PHZ
Figures
1, 2
2.3 to 2.7
2.0
4.2
6.9
V
I
2 x V
CC
for t
PLZ
1.65 to 1.95
3.0
6.2
10.5
C
L
50 pF, RU
RD
500
:
Q
Charge Injection (Note 9)
1.65 to 5.5
pC
C
L
0.1 nF, V
GEN
0V,
Figure 3
R
GEN
0
:
, f
1 MHz
OIRR
Off Isolation (Note 10)
1.65 to 5.5
-55.0
dB
R
L
50
:
, C
L
5 pF,
Figure 4
f
10 MHz
Xtalk
Crosstalk
1.65 to 5.5
70.0
dB
R
L
50
:
, C
L
5 pF,
Figure 5
f
10 MHz
BW
3dB Bandwidth
1.65 to 5.5
!
300
MHz
R
L
50
:
Figure 8
THD
Total Harmonic Distortion
5
.016
%
R
L
600
:
(Note 9)
0.5 V
P-P
f
600 Hz to 20 KHz
Symbol Parameter
Typ
Max
Units
Conditions
Figures
C
IN
Control Pin Input Capacitance
2.5
pF
V
CC
0V
C
I/O
(OFF)
Switch Port Off Capacitance
5.0
pF
V
CC
5.0V
Figure 6
C
I/O
(ON)
Switch Port Capacitance when Switch is Enabled
10.0
pF
V
CC
5.0V
Figure 7
5
www.fairchildsemi.com
FSA26
6
· NC7
WB6
6
AC Loading and Waveforms
Input driven by 50
:
source terminated in 50
:
C
L
includes load and stray capacitance.
Input PRR
1.0 MHz; t
w
500 ns
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
FIGURE 3. Charge Injection Test
www.fairchildsemi.com
6
FSA2
66
· NC7W
B
6
6
AC Loading and Waveforms
(Continued)
FIGURE 4. Off Isolation
FIGURE 5. Crosstalk
FIGURE 6. Channel Off Capacitance
FIGURE 7. Channel On Capacitance
FIGURE 8. Bandwidth
7
www.fairchildsemi.com
FSA26
6
· NC7
WB6
6
Tape and Reel Specification
TAPE FORMAT for US8
TAPE DIMENSIONS inches (millimeters)
TAPE FORMAT for MicroPak
TAPE DIMENSIONS inches (millimeters)
Package
Tape
Number
Cavity
Cover Tape
Designator
Section
Cavities
Status
Status
Leader (Start End)
125 (typ)
Empty
Sealed
K8X
Carrier
250
Filled
Sealed
Trailer (Hub End)
75 (typ)
Empty
Sealed
Package
Tape
Number
Cavity
Cover Tape
Designator
Section
Cavities
Status
Status
Leader (Start End)
125 (typ)
Empty
Sealed
L8X
Carrier
250
Filled
Sealed
Trailer (Hub End)
75 (typ)
Empty
Sealed
www.fairchildsemi.com
8
FSA2
66
· NC7W
B
6
6
REEL DIMENSIONS inches (millimeters)
Tape Size
A
B
C
D
N
W1
W2
W3
8 mm
7.0
0.059
0.512
0.795
2.165
0.331
0.059/
0.000
0.567
W1
0.078/
0.039
(177.8)
(1.50)
(13.00)
(20.20)
(55.00)
(8.40
1.50/
0.00)
(14.40)
(W1
2.00/
1.00)
9
www.fairchildsemi.com
FSA26
6
· NC7
WB6
6
Physical Dimensions
inches (millimeters) unless otherwise noted
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide
Package Number MAB08A
www.fairchildsemi.com
10
FSA2
66
· NC7W
B
6
6
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
Package Number MAC08A
11
www.fairchildsemi.com
FSA26
6
· NC7
WB6
6
Lo
w
V
o
lt
age
Dual SPST Norma
l
l
y
O
p
e
n
Anal
og S
w
it
ch or
2-
Bi
t Bus S
w
it
ch
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY
ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT
CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION
As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, or (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be reason-
ably expected to cause the failure of the life support device
or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of terms
Datasheet Identification Product Status
Definition
Advance Information
Formative or In Design
This datasheet contains the design specifications for product develop-
ment. Specifications may change in any manner without notice.
Preliminary
First Production
This datasheet contains preliminary data, and supplementary data will
be published at a later date. Fairchild Semiconductor reserves the right
to make changes at any time without notice in order to improve design.
No Identification Needed
Full Production
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice in order
to improve design.
Obsolete
Not In Production
This datasheet contains specifications on a product that has been dis-
continued by Fairchild Semiconductor. The datasheet is printed for ref-
erence information only.
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