2003 Fairchild Semiconductor Corporation
DS500373
www.fairchildsemi.com
May 2000
Revised August 2003
NC7WB66 T
i
nyLogi
c
Low
V
o
l
t
age UHS
Dual
SPST Normall
y
O
p
e
n
Bus Sw
i
t
c
h
NC7WB66
TinyLogic
Low Voltage UHS Dual SPST
Normally Open Bus Switch
General Description
The NC7WB66 is an ultra high-speed (UHS) dual single-
pole/single-throw (SPST) bus switch. The device is fabri-
cated 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 speci-
fied 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
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
Ordering Code:
TinyLogic
is a registered trademark of Fairchild Semiconductor Corporation.
MicroPak
is a trademark of Fairchild Semiconductor Corporation.
Product
Package Description
Supplied As
Order
Package
Code
Number
Number Top Mark
NC7WB66K8X MAB08A
WB66
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3K Units on Tape and Reel
NC7WB66L8X MAC08A
P4
8-Lead MicroPak, 1.6 mm Wide
5K Units on Tape and Reel
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2
NC7W
B
66
Logic Symbol
Pin Descriptions
Function Table
H
=
HIGH Logic Level
L
=
LOW Logic Level
Connection Diagrams
(Top View)
Pin One Orientation Diagram
AAA represents Product Code Top Mark - see ordering code
Note: Orientation of Top Mark determines Pin One location. Read the top
product code mark left to right, Pin One is the lower left pin (see diagram).
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
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NC7WB66
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 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
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
)
128 mA
DC V
CC
or Ground Current (I
CC
/I
GND
)
100 mA
Storage Temperature Range (T
STG
)
-
65
C to
+
150
C
Junction Lead Temperature
under Bias (T
J
)
+
150
C
Junction Lead Temperature (T
L
)
(Soldering, 10 Seconds)
+
260
C
Power Dissipation (P
D
) @
+
85
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
C to
+
85
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 (
JA
)
250
C/W
Symbol
Parameter
V
CC
T
A
=
+
25
C
T
A
=
-
40
C to
+
85
C
Units
Conditions
(V)
Min
Typ
Max
Min
Max
V
IH
HIGH Level Input Voltage
1.651.95 0.75 V
CC
0.75 V
CC
V
2.35.5
0.7 V
CC
0.7 V
CC
V
IL
LOW Level Input Voltage
1.651.95
0.25 V
CC
0.25V
CC
V
2.35.5
0.3 V
CC
0.3 V
CC
I
IN
Input Leakage Current
05.5
0.1
1.0
A
0
V
IN
5.5V
I
OFF
Switch OFF Leakage Current
1.655.5
0.1
1.0
A
0
A, B
V
CC
R
ON
Switch ON Resistance
4.5
6
10
10
V
I
=
0V, I
O
=
30 mA
(Note 4)
7
13.5
13.5
V
I
=
2.4V, I
O
=
-
30 mA
6
10
10
V
I
=
4.5V, I
O
=
-
30 mA
3.0
7.5
15
15
V
I
=
0V, I
O
=
24 mA
8.5
15
15
V
I
=
3V, I
O
=
-
24 mA
2.3
9
20
20
V
I
=
0V, I
O
=
8 mA
10.5
20
20
V
I
=
2.3V, I
O
=
-
8 mA
1.65
12.5
30
30
V
I
=
0V, I
O
=
4 mA
17
30
30
V
I
=
1.65V, I
O
=
-
4 mA
I
CC
Quiescent Supply Current
5.5
1
10
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
15
15
I
O
=
-
30 mA, 0
V
I
V
CC
Signal Range
3.0
15
30
30
I
O
=
-
24 mA, 0
V
I
V
CC
(Note 4)(Note 5)
2.3
45
75
75
I
O
=
-
8 mA, 0
V
I
V
CC
1.65
150
275
275
I
O
=
-
4 mA, 0
V
I
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
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4
NC7W
B
66
DC Electrical Characteristics
(Continued)
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
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.
Capacitance
Symbol
Parameter
V
CC
T
A
=
+
25
C
T
A
=
-
40
C to
+
85
C
Units
Conditions
(V)
Min
Typ
Max
Min
Max
R
flat
ON Resistance Flatness
4.5
2.5
6
6
I
O
=
-
30 mA, 0
V
I
V
CC
(Note 4)(Note 5)(Note 6)
3.0
8
17.5
17.5
I
O
=
-
24 mA, 0
V
I
V
CC
2.3
33
60
60
I
O
=
-
8 mA, 0
V
I
V
CC
1.65
135
250
250
I
O
=
-
4 mA, 0
V
I
V
CC
Symbol
Parameter
V
CC
T
A
=
-
40
C to
+
85
C
Units
Conditions
Figure
(V)
Min
Typ
Max
Number
t
PHL
, t
PLH
Propagation Delay Bus to Bus
4.55.5
0.35
1.0
ns
(Note 8)
3.03.6
0.7
1.5
V
I
=
OPEN
Figures
2, 1
2.32.7
1.1
2.5
C
L
=
50 pF, RU
=
RD
=
500
1.651.95
2.0
4.0
t
PZL
, t
PZH
Output Enable Time
4.55.5
0.8
2.0
3.2
ns
Turn on Time
3.03.6
1.2
2.5
3.9
V
I
=
0V for t
PZH
Figures
2, 1
2.32.7
1.5
3.2
5.6
V
I
=
2 x V
CC
for t
PZL
1.651.95
2.5
5.7
10
C
L
=
50 pF, RU
=
RD
=
500
t
PLZ
, t
PHZ
Output Disable Time
4.55.5
0.8
2.6
4.1
ns
Turn Off Time
3.03.6
1.5
3.4
5.0
V
I
=
0V for t
PHZ
Figures
2, 1
2.32.7
2.0
4.2
6.9
V
I
=
2 x V
CC
for t
PLZ
1.651.95
3.0
6.2
10.5
C
L
=
50 pF, RU
=
RD
=
500
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
pF
V
CC
=
5.0V
Figure 3
C
I/O
(ON)
Switch Port Capacitance when Switch is Enabled
10
pF
V
CC
=
5.0V
Figure 4
5
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NC7WB66
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. Channel Off Capacitance
FIGURE 4. Channel On Capacitance
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6
NC7W
B
66
Tape and Reel Specification
TAPE FORMAT
TAPE DIMENSIONS inches (millimeters)
REEL 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
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)
7
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NC7WB66
Physical Dimensions
inches (millimeters) unless otherwise noted
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide
Package Number MAB08A
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8
NC7WB66 T
i
nyLogi
c
Low
V
o
l
t
age UHS
Dual
SPST Normall
y
O
pen
Bus Sw
i
t
c
h
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
8-Lead MicroPak, 1.6 mm Wide
Package Number MAC08A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
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 THE PRESIDENT 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, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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