FST3345MTCX [ONSEMI]
8 位总线开关;型号: | FST3345MTCX |
厂家: | ONSEMI |
描述: | 8 位总线开关 开关 驱动 光电二极管 逻辑集成电路 |
文件: | 总9页 (文件大小:646K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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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
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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.
December 2012
FST3345 — 8-Bit Bus Switch
Features
Description
The FST3345 switch provides eight-bits of high-speed
CMOS TTL-compatible bus switching. The low on
resistance of the switch allows inputs to be connected to
outputs without adding propagation delay or generating
additional ground bounce noise.
.
.
.
.
.
4 Ω Switch Connection between Two Ports
Minimal Propagation Delay through the Switch
Low ICC
Zero Bounce in Flow-through Mode
Control Inputs Compatible with TTL Level
The device is organized as an eight-bit switch with dual
output enable inputs (OE and /OE). When /OE is LOW
or OE is HIGH, the switch is ON and port A is connected
to port B. When /OE is HIGH, and OE is LOW, the
switch is OPEN and a high-impedance state exists
between the two ports.
Ordering Information
Operating
Part Number Temperatur
e Range
Packing
Package
Method
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC
MO-153, 4.4 mm Wide
FST3345MTCX -40 to +85°C
Tape and Reel
Logic Diagram
2
18
11
B0
A0
9
A7
B7
1
19
OE
/OE
Figure 1. Logic Diagram
©1997 Fairchild Semiconductor Corporation
FST3345 • Rev. 1.0.3
www.fairchildsemi.com
Pin Configuration
VCC
/OE
OE
A0
1
2
20
19
B0
B1
B2
B3
A1
3
4
5
6
18
17
16
15
A2
A3
A4
A5
A6
B4
B5
B6
7
8
14
13
12
11
9
A7
10
B7
GND
Figure 2. Pin Configuration
Pin Descriptions
Pin #
Pin Names
OE, /OE
Description
Bus Switch Enables
Bus A
1,19
2,3,4,5,6,7,8,9
A0,A1,A2,A3,A4,A5,A6,A7
GND
10
Ground
11,12,13,14,15,16,17,18
20
B7,B6,B5,B4,B3,B2,B1,B0
VCC
Bus B
Supply Voltage
Truth Table
Input
Function
OE
Don’t Care
HIGH
/OE
LOW
Connect
Connect
Don’t Care
HIGH
LOW
Disconnect
© 1997 Fairchild Semiconductor Corporation
FST3345 • Rev. 1.0.3
www.fairchildsemi.com
2
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
VCC
Parameter
Min.
-0.5
-0.5
-0.5
Max.
7.0
Unit
V
Supply Voltage
VS
DC Switch Voltage
DC Input Voltage(1)
7.0
V
VIN
7.0
V
IIK
DC Input Diode Current, VIN < 0 V
DC Output Sink Current
-50
mA
mA
mA
°C
IOUT
128
±100
+150
ICC / IGND
TSTG
Note:
DC VCC / GND Current
Storage Temperature Range
-65
1. The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are
observed.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
VCC
Parameter
Min.
4.0
0
Max.
5.5
5.5
5.5
5
Unit
V
Power Supply Operating
VIN
Input Voltage
V
VOUT
Output Voltage
0
V
Switch Control Input(2)
Switch I/O
0
tr, tf
Input Rise and Fall Time
ns/V
°C
0
DC
+85
TA
Operating Temperature, Free Air
-40
Note:
2. Unused control inputs must be held HIGH or LOW. They may not float.
© 1997 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FST3345 • Rev. 1.0.3
3
DC Electrical Characteristics
Typical values are at VCC = 5.0 V and TA = 25°C.
TA=-40 to +85°C
Symbol
Parameter
Conditions
VCC (V)
Units
Min.
Typ.
Max.
VIK
VIH
VIL
IIN
Clamp Diode Voltage
IIN = -18 mA
4.5
4.0 to 5.5
4.0 to 5.5
5.5
-1.2
V
V
High-Level Input Voltage
Low-Level Input Voltage
Input Leakage Current
Off-state Leakage Current
2.0
0.8
±1.0
±1.0
7
V
µA
µA
0 ≤ VIN ≤ 5.5 V
IOZ
5.5
0 ≤ A, B ≤ VCC
VIN = 0 V, IIN = 64 mA
VIN = 0 V, IIN = 30 mA
VIN = 2.4 V, IIN = 15 mA
VIN = 2.4 V, IIN = 15 mA
VIN = VCC or GND,
4.5
4
4
4.5
7
RON
Switch On Resistance(3)
Ω
4.5
8
15
4.0
11
20
ICC
Quiescent Supply Current
Increase in ICC per Input
5.5
5.5
3
µA
I
OUT = 0
One Input at 3.4 V, Other
Inputs at VCC or GND
2.5
mA
ΔICC
Note:
3. Measured by the voltage drop between the A and B pins at the indicated current through the switch. On
resistance is determined by the lower of the voltages on the A or B pins.
AC Electrical Characteristics
TA = -40 to +85°C, CL = 50 pF, and RU = RD = 500 Ω.
V
CC = 4.5 – 5.5 V
VCC = 4.0 V
Symbol
Parameter
Conditions
Units
Figure
Min.
Max.
Min.
Max.
Propagation Delay
Bus-to-Bus(4)
Figure 3
Figure 4
tPHL, tPLH
VIN = Open
0.25
0.25
ns
VIN = 7 V for tPZL
VIN = Open for
tPZH
Figure 3
Figure 4
tPZH ,tPZL
Output Enable Time
1.5
1.0
6.5
8.0
7.0
8.2
ns
ns
VIN = 7 V for tPLZ
Output Disable Time VIN = Open for
tPHZ
Figure 3
Figure 4
tPHZ, tPLZ
Note:
4. This parameter is guaranteed by design, but is not tested. 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).
Capacitance
TA = +25°C, f = 1 MHz. Capacitance is characterized, but not tested.
Symbol
CIN
Parameter
Conditions
Typ.
Units
pF
Control Pin Input Capacitance
Input/Output Capacitance
VCC = 5.0 V
4
5
CI/O
VCC, /OE = 5.0 V, OE = 0 V
pF
© 1997 Fairchild Semiconductor Corporation
FST3345 • Rev. 1.0.3
www.fairchildsemi.com
4
AC Loadings and Waveforms
Notes: Input driven by 50 Ω source terminated in 50 Ω.
CL includes load and stray capacitance.
Input PRR = 1.0 MHz, tw = 500 ns.
Figure 3. AC Test Circuit
Figure 4. AC Waveforms
© 1997 Fairchild Semiconductor Corporation
FST3345 • Rev. 1.0.3
www.fairchildsemi.com
5
Physical Dimensions
Figure 5. 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4 mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the
warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
© 1997 Fairchild Semiconductor Corporation
FST3345 • Rev. 1.0.3
www.fairchildsemi.com
6
© 1997 Fairchild Semiconductor Corporation
FST3345 • Rev. 1.0.3
www.fairchildsemi.com
7
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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