NC7WB3125K8X [ONSEMI]
2 位低功耗总线开关;
| 型号： | NC7WB3125K8X |
| 厂家： | 
ONSEMI |
| 描述： | 2 位低功耗总线开关 开关 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总12页 (文件大小：308K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
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Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA
Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
May 2000
Revised December 2005
NC7WB3125
2-Bit Low Power Bus Switch
General Description
Features
The NC7WB3125 is a 2-bit ultra high-speed CMOS FET bus
switch with TTL-compatible active LOW control inputs. The low
On Resistance of the switch allows inputs to be connected to
outputs with minimal propagation delay and without generating
additional ground bounce noise. The device is organized as a 2-
bit switch with independent bus enable (OE) controls. When OE
is LOW, the switch is ON and Port A is connected to Port B.
When OE is HIGH, the switch is OPEN and a high-impedance
state exists between the two ports. Control inputs tolerate volt-
Space saving US8 surface mount package
MicroPak Pb-Free leadless package
Typical 3 switch resistance at 5.0V V
CC
Minimal propagation delay through the switch
Power down high impedance input/output
Zero bounce in flow through mode
ages up to 5.5V independent of V
.
TTL compatible active LOW control inputs
Control inputs are overvoltage tolerant
Bus switch replacement for Logic x125 part
CC
Ordering Code:
Product
Order
Package Code
Package Description
Supplied As
Number
Number Top Mark
NC7WB3125K8X MAB08A
WB25
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3k Units on Tape and Reel
Pb-Free 8-Lead MicroPak, 1.6 mm Wide 5k Units on Tape and Reel
NC7WB3125L8X MAC08A
(Preliminary)
T4
Pb-Free package per JEDEC J-STD-020B.
MircoPak is a trademark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation
DS500376
www.fairchildsemi.com
Logic Diagram
Connection Diagrams
(Top View)
Pin Descriptions
Pin One Orientation Diagram
Pin Name
Description
Bus A
A
B
Bus B
OE
Bus Enable Input
Function Table
AAA represents Product Code Top Mark - see ordering code
Bus Enable Input OE
Function
B Connected to A
Disconnected
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).
L
H
Pad Assignments for MicroPak
(Top Through View)
www.fairchildsemi.com
2
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions (Note 3)
Supply Voltage (V
)
0.5V to 7.0V
0.5V to 7.0V
0.5V to 7.0V
CC
DC Switch Voltage (V )
S
Supply Operating (V
)
4.0V to 5.5V
0V to 5.5V
CC
DC Output Voltage (V ) (Note 2)
IN
Control Input Voltage (V
)
IN
DC Input Diode Current
Switch Input Voltage (V
)
0V to 5.5V
IN
(I ) V
0V
50 mA
IK
IN
Output Voltage (V
)
0V to 5.5V
OUT
DC Output (I
) Current
128 mA
OUT
Operating Temperature (T )
40 C to 85 C
A
DC V or Ground Current
CC
Input Rise and Fall Time (t , t )
r
f
(I /I
)
100 mA
65 C to 150 C
150 C
CC GND
Switch Control Input
Switch I/O
0 ns/V to 5 ns
0 ns/V to DC
250 C/W
Storage Temperature Range (T
)
STG
Junction Temperature under Bias (T )
J
Thermal Resistance (
)
JA
Junction Lead Temperature (T )
L
(Soldering, 10 Seconds)
260 C
Power Dissipation (P ) @ 85 C
250 mW
D
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 logic inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
V
T
40 C to 85 C
CC
A
Symbol
Parameter
Clamp Diode Voltage
Units
Conditions
(V)
4.5
Min
Typ
Max
V
V
V
V
1.2
V
V
V
V
A
A
I
18 mA
IK
IN
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
Input Leakage Current
Switch OFF Leakage Current
Switch On Resistance
(Note 4)
4.0 to 5.5
4.0 to 5.5
4.0 to 5.5
5.5
2.0
IH
0.8
IL
See Figure 3
V
0
V
OH
IN
CC
I
I
1.0
1.0
V
5.5V
IN
OFF
IN
5.5
0
A, B
0V, I
V
CC
R
4.5
3.0
3.0
7.0
V
V
V
V
V
64 mA
30 mA
15 mA
15 mA
ON
IN
IN
IN
4.5
7.0
0V, I
IN
4.5
6.0
15.0
20.0
3.0
2.4V, I
2.4V, I
IN
IN
IN
4.0
10.0
IN
I
Quiescent Supply Current
5.5
A
V
or GND
CC
IN
CC
I
0
OUT
I
Increase in I per Input (Note 5)
5.5
1.0
2.5
mA
V
3.4V, One OE Input only,
Other OE
CC
CC
IN
V
CC
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: Per TTL driven input (V
3.4V, control input only). A and B pins do not contribute to I
.
CC
IN
3
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AC Electrical Characteristics
T
40 C to 85 C,
50 pF, RU RD 500
A
V
C
L
Symbol
Parameter
Units
Conditions
Figure
CC
(V)
Min
Typ
Max
Number
t
,
Propagation Delay Bus-to-Bus
(Note 6)
4.0 to 5.5
0.25
ns
V
OPEN
Figures
1, 2
PHL
I
t
PLH
t
,
Output Enable Time
4.5 to 5.5
4.0
0.8
0.8
0.8
0.8
2.5
3.0
3.1
2.9
4.2
4.6
4.8
4.4
V
V
V
V
7V for t
0V for t
7V for t
0V for t
Figures
1, 2
PZL
I
I
I
I
PZL
ns
ns
t
PZH
PZH
PLZ
PHZ
t
,
Output Disable Time
4.5 to 5.5
4.0
Figures
1Figure 2
PLZ
t
PHZ
Note 6: This parameter is guaranteed by design. The bus switch contributes no propagation delay other than the RC delay of the typical On Resistance of the switch and the 50
pF load capacitance, when driven by an ideal voltage source (zero output impedance). The specified limit is calculated on this basis.
Capacitance
Symbol
Parameter
Control Pin Input Capacitance
Typ
Max
Units
Conditions
C
C
C
2.5
pF
V
V
V
0V
IN
CC
CC
CC
(OFF)
(ON)
Port Off Capacitance
6.0
pF
pF
5.0V OE
5.0V, OE 0V
I/O
I/O
Switch ON Capacitance
12.0
AC Loading and Waveforms
Input driven by 50 source terminated in 50
includes load and stray capacitance
C
L
Input PRR 1.0 MHz; t
500 ns
W
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
www.fairchildsemi.com
4
DC Characteristics
FIGURE 3. Typical High Level Output Voltage vs. Supply Voltage
5
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Tape and Reel Specification
TAPE FORMAT for US8
Package
Tape
Number
Cavity
Cover Tape
Designator
Section
Leader (Start End)
Carrier
Cavities
125 (typ)
250
Status
Empty
Filled
Status
Sealed
Sealed
Sealed
K8X
Trailer (Hub End)
75 (typ)
Empty
TAPE DIMENSIONS inches (millimeters)
TAPE FORMAT for MicroPak
Package
Tape
Number
Cavity
Cover Tape
Designator
Section
Leader (Start End)
Carrier
Cavities
125 (typ)
250
Status
Empty
Filled
Status
Sealed
Sealed
Sealed
L8X
Trailer (Hub End)
75 (typ)
Empty
TAPE DIMENSIONS inches (millimeters)
www.fairchildsemi.com
6
REEL DIMENSIONS inches (millimeters)
Tape Size
A
7.0
B
0.059
C
0.512
D
0.795
N
2.165
W1
W2
0.567
(14.40)
W3
0.331 0.059/ 0.000
W1 0.078/ 0.039
8 mm
(177.8)
(1.50)
(13.00) (20.20) (55.00)
(8.40 1.50/ 0.00)
(W1 2.00/ 1.00)
7
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide
Package Number MAB08A
www.fairchildsemi.com
8
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
Package Number MAC08A
9
www.fairchildsemi.com
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:
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
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
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
Full Production
Not In 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
Obsolete
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice in order
to improve design.
This datasheet contains specifications on a product that has been dis-
continued by Fairchild Semiconductor. The datasheet is printed for ref-
erence information only.
www.fairchildsemi.com
10
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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相关型号：
NC7WB3306K8X_NL
Bus Driver, CBT/FST/QS/5C/B Series, 2-Func, 1-Bit, True Output, CMOS, PDSO8, 3.10 MM, MO-187CA, US-8
FAIRCHILD
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