FSA266 • NC7WB66 TinyLogic Low Voltage UHS Dual SPST Normally Open Analog Switch or 2-Bit Bus Switch
May 2000
Revised November 2003
FSA266 • NC7WB66
TinyLogic
Low Voltage UHS 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
operating range. The device is organized as a
dual switch with independent 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
s
Useful in both analog and digital applications
s
Space saving US8 surface mount package
s
MicroPak
leadless package
s
Typical 7
Ω
On Resistance @ 5V V
CC
s
Broad V
CC
operating range: 1.65V to 5.5V
s
Rail-to-Rail signal handling
s
Power down high impedance control inputs
s
Control inputs are overvoltage tolerant
s
Control inputs are CMOS compatible
s
>
300 MHz
−
3dB bandwidth
Ordering Code:
Product
Order
Number
FSA266K8X
FSA266L8X
NC7WB66K8X
NC7WB66L8X
Package
Number
MAB08A
MAC08A
MAB08A
MAC08A
Code
Top Mark
WB66
P4
WB66
P4
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3K Units on Tape and Reel
8-Lead MicroPak, 1.6 mm Wide
8-Lead MicroPak, 1.6 mm Wide
5K Units on Tape and Reel
5K Units on Tape and Reel
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3K Units on Tape and Reel
Package Description
Supplied As
TinyLogic is a registered trademark of Fairchild Semiconductor Corporation.
MicroPak is a trademark of Fairchild Semiconductor Corporation.
© 2003 Fairchild Semiconductor Corporation
DS500373
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FSA266 • NC7WB66
Logic Symbol
Connection Diagrams
Pin Assignments for US8
(Top View)
Analog Symbol
Pad Assignments for MicroPak
(Top Thru View)
Pin Descriptions
Pin Names
A
B
OE
Description
Switch Port A
Switch Port B
Control Input
Function Table
Switch Enable Input (OE)
L
H
H
=
HIGH Logic Level
L
=
LOW Logic Level
Function
Disconnect
B Connected to A
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2
FSA266 • NC7WB66
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 Switch Output Current (I
OUT
)
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
SC70-6
250 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)
Supply Voltage (V
CC
)
Control Input Voltage (V
IN
)
Switch Input Voltage (V
IN
)
Switch Output Voltage (V
OUT
)
Operating Temperature (T
A
)
Input Rise and Fall Time (t
r
, t
f
)
Control Input V
CC
=
1.65V
−
2.7V
Control Input V
CC
=
3.0V
−
3.6V
Control Input V
CC
=
4.5V
−
5.5V
Thermal Resistance (
θ
JA
)
0 ns/V to 20 ns/V
0 ns/V to 10 ns/V
0 ns/V to 5 ns/V
250
°
C/W
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
Input Leakage Current
Switch OFF Leakage Current
Switch On Resistance
(Note 4)
4.5
V
CC
(V)
2.3 to 5.5
1.65 to 1.95
2.3 to 5.5
0 to 5.5
1.65 to 5.5
6
7
6
3.0
2.3
1.65
I
CC
Quiescent Supply Current
All Channels ON or OFF
Analog Signal Range
RRange
On Resistance Over
Signal Range
(Note 4)(Note 5)
∆R
ON
On Resistance Match
Between Channels
(Note 4)(Note 7)
7.5
8.5
9
10.5
12.5
17
5.5
V
CC
4.5
3.0
2.3
1.65
4.5
3.0
2.3
1.65
0
8
15
45
150
0.2
0.2
0.5
0.6
Ω
Min
0.7 V
CC
0.25 V
CC
0.3 V
CC
±0.1
±0.1
10
13.5
10
15
15
20
20
30
30
1
V
CC
15
30
75
275
0
1.65 to 1.95 0.75 V
CC
T
A
= +25°C
Typ
Max
T
A
= −40°C
to
+85°C
Min
0.75 V
CC
0.7 V
CC
0.25V
CC
0.3 V
CC
±1.0
±1.0
10
13.5
10
15
15
20
20
30
30
10
V
CC
15
30
75
275
Ω
Ω
Ω
Ω
µA
V
I
O
= −30
mA, 0
≤
V
I
≤
V
CC
I
O
= −24
mA, 0
≤
V
I
≤
V
CC
I
O
= −8
mA, 0
≤
V
I
≤
V
CC
I
O
= −4
mA, 0
≤
V
I
≤
V
CC
I
O
= −30
mA, V
I
=
3.15
I
O
= −24
mA, V
I
=
2.1
I
O
= −8
mA, V
I
=
1.6
I
O
= −4
mA, V
I
=
1.15
Ω
Max
V
V
µA
µA
0
≤
V
IN
≤
5.5V
0
≤
A, B
≤
V
CC
V
I
=
0V, I
O
=
30 mA
V
I
=
2.4V, I
O
= −30
mA
V
I
=
4.5V, I
O
= −30
mA
V
I
=
0V, I
O
=
24 mA
V
I
=
3V, I
O
= −24
mA
V
I
=
0V, I
O
=
8 mA
V
I
=
2.3V, I
O
= −8
mA
V
I
=
0V, I
O
=
4 mA
V
I
=
1.65V, I
O
= −4
mA
V
IN
=
V
CC
or GND
I
OUT
=
0
Units
Conditions
3
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FSA266 • NC7WB66
DC Electrical Characteristics
Symbol
R
flat
Parameter
On Resistance Flatness
(Note 4)(Note 5)(Note 6)
V
CC
(V)
4.5
3.0
2.3
1.65
(Continued)
T
A
= +25°C
Min
Typ
2.5
8
33
135
Max
6
17.5
60
250
T
A
= −40°C
to
+85°C
Min
Max
6
17.5
60
250
I
O
= −30
mA, 0
≤
V
I
≤
V
CC
I
O
= −24
mA, 0
≤
V
I
≤
V
CC
I
O
= −8
mA, 0
≤
V
I
≤
V
CC
I
O
= −4
mA, 0
≤
V
I
≤
V
CC
Units
Conditions
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.
Note 7:
∆R
ON
=
R
ON
max
−
R
ON
min measured at identical V
CC
, temperature and voltage levels.
AC Electrical Characteristics
Symbol
t
PHL
, t
PLH
Parameter
Propagation Delay Bus-to-Bus
(Note 8)
V
CC
(V)
4.5 to 5.5
3.0 to 3.6
2.3 to 2.7
1.65 to 1.95
t
PZL
, t
PZH
Output Enable Time
Turn on Time
4.5 to 5.5
3.0 to 3.6
2.3 to 2.7
1.65 to 1.95
t
PLZ
, t
PHZ
Output Disable Time
Turn Off Time
4.5 to 5.5
3.0 to 3.6
2.3 to 2.7
1.65 to 1.95
Q
OIRR
Xtalk
BW
THD
Charge Injection (Note 9)
Off Isolation (Note 10)
Crosstalk
−3dB
Bandwidth
Total Harmonic Distortion
(Note 9)
5
.016
%
1.65 to 5.5
1.65 to 5.5
1.65 to 5.5
1.65 to 5.5
-55
−70
>300
0.8
1.2
1.5
2.5
0.8
1.5
2.0
3.0
T
A
= −40°C
to
+85°C
Min
Typ
0.35
0.7
1.1
2.0
2.0
2.5
3.2
5.7
2.6
3.4
4.2
6.2
Max
1.0
1.5
2.5
4.0
3.2
3.9
5.6
10
4.1
5.0
6.9
10.5
pC
dB
dB
MHz
ns
V
I
=
0V for t
PHZ
V
I
=
2 x V
CC
for t
PLZ
C
L
=
50 pF, RU
=
RD
=
500Ω
C
L
=
0.1 nF, V
GEN
=
0V,
R
GEN
=
0
Ω,
f
=
1 MHz
R
L
=
50
Ω,
C
L
=
5 pF,
f
=
10 MHz
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:
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
]
Units
Conditions
Figure
Number
ns
V
I
=
OPEN
C
L
=
50 pF, RU
=
RD
=
500Ω
Figures
2, 1
ns
V
I
=
0V for t
PZH
V
I
=
2 x V
CC
for t
PZL
C
L
=
50 pF, RU
=
RD
=
500Ω
Figures
2, 1
Figures
2, 1
Figure 3
Figure 4
Figure 5
Figure 8
Capacitance
Symbol
C
IN
C
I/O
(ON)
Parameter
Control Pin Input Capacitance
Switch Port Capacitance when Switch is Enabled
Typ
2.5
5
10
Max
Units
pF
pF
pF
V
CC
=
0V
V
CC
=
5.0V
V
CC
=
5.0V
Figure 6
Figure 7
Conditions
Figures
C
I/O
(OFF) Switch Port Off Capacitance
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4
FSA266 • NC7WB66
AC Loading and Waveforms
Input driven by 50Ω source terminated in 50Ω
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
5
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