74VHC245MTC [ONSEMI]
带 3 态输出的八路双向收发器;
| 型号： | 74VHC245MTC |
| 厂家： | 
ONSEMI |
| 描述： | 带 3 态输出的八路双向收发器 光电二极管 逻辑集成电路 |
| 文件： | 总9页 (文件大小：217K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Is Now Part of
To learn more about ON Semiconductor, please visit our website at
www.onsemi.com
Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please
email any questions regarding the system integration to Fairchild_questions@onsemi.com.
ON Semiconductor and the ON Semiconductor logo 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.
November 1992
Revised April 2005
74VHC245
Octal Bidirectional Transceiver with 3-STATE Outputs
General Description
Features
The VHC245 is an advanced high speed CMOS octal bus
transceiver fabricated with silicon gate CMOS technology.
It achieves high speed operation similar to equivalent Bipo-
lar Schottky TTL while maintaining the CMOS low power
dissipation. The VHC245 is intended for bidirectional asyn-
chronous communication between data busses. The direc-
tion of data transmission is determined by the level of the
T/R input. The enable input can be used to disable the
device so that the busses are effectively isolated. All inputs
are equipped with protection circuits against static dis-
charge.
■ High Speed: tPD 4.0 ns (typ) at VCC 5V
■ High Noise Immunity: VNIH VNIL 28% VCC (Min)
■ Power Down Protection is provided on all inputs
■ Low Noise: VOLP 0.9V (typ)
■ Low Power Dissipation:
ICC
4 A (Max) @ TA 25 C
■ Pin and Function Compatible with 74HC245
Ordering Code:
Order Number Package Number
Package Description
74VHC245M
74VHC245SJ
74VHC245MTC
74VHC245N
M20B
M20D
MTC20
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Logic Symbol
Connection Diagram
IEEE/IEC
Truth Table
Pin Description
Inputs
Outputs
Pin
Description
OE
L
T/R
L
Names
Bus B Data to Bus A
Bus A Data to Bus B
HIGH-Z State
OE
Output Enable Input
Transmit/Receive Input
L
H
T/R
H
X
H
HIGH Voltage Level
L
LOW Voltage Level
X
Immaterial
A0–A7
B0–B7
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Any unused bus terminals during HIGH-Z State must be held HIGH or
LOW.
© 2005 Fairchild Semiconductor Corporation
DS011520
www.fairchildsemi.com
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions (Note 2)
Supply Voltage (VCC
DC Input Voltage (VIN) (T/R, OE)
DC Output Voltage (VOUT
Input Diode Current (IIK) (T/R, OE)
Output Diode Current (IOK
DC Output Current (IOUT
DC VCC/GND Current (ICC
)
0.5V to 7.0V
0.5V to 7.0V
0.5V to VCC 0.5V
20 mA
Supply Voltage (VCC
Input Voltage (VIN)(T/R, OE)
Output Voltage (VOUT
Operating Temperature (TOPR
)
2.0V to 5.5V
0V to 5.5V
)
)
0V to VCC
)
20 mA
)
40 C to 85 C
)
25 mA
Input Rise and Fall Time (tr, tf)
VCC 3.3V 0.3V
)
75 mA
0
100 ns/V
Storage Temperature (TSTG
Lead Temperature (TL)
(Soldering, 10 seconds)
)
65 C to 150 C
VCC 5.0V 0.5V
0 20 ns/V
Note 1: Absolute Maximum Ratings are values beyond which the device
may be damaged or have its useful life impaired. The databook specifica-
tions should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading vari-
ables. Fairchild does not recommend operation outside databook specifica-
tions.
260 C
Note 2: Unused inputs or I/O pins must be held HIGH or LOW. They may
not float.
DC Electrical Characteristics
V
T
25 C
Typ
T
A
40 C to 85 C
Max
CC
A
Symbol
Parameter
Units
Conditions
(V)
Min
Max
Min
1.50
0.7 V
V
V
V
HIGH Level
2.0
1.50
IH
V
V
Input Voltage
LOW Level
3.0 5.5 0.7 V
CC
CC
2.0
0.50
0.50
0.3 V
IL
Input Voltage
HIGH Level
Output Voltage
3.0 5.5
0.3 V
CC
CC
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
1.9
2.0
3.0
4.5
1.9
2.9
V
V
V
I
50 A
OH
IN
IH
OH
2.9
4.4
V
V
V
V
or V
IL
4.4
2.58
3.94
2.48
3.80
I
I
I
4 mA
8 mA
OH
OH
OL
V
LOW Level
0.0
0.0
0.0
0.1
0.1
0.1
0.1
V
IH
50 A
OL
IN
Output Voltage
or V
IL
0.1
0.1
0.36
0.36
0.44
0.44
I
I
4 mA
8 mA
OL
OL
I
I
3-STATE Output
Off-State Current
V
V
V
V
V
or GND
OZ
IN
CC
5.5
0.25
0.1
2.5
1.0
A
A
A
V
or GND
OUT
CC
OE
V
or V
IN
IN
IH IL
Input Leakage
0
5.5
5.5V or GND
IN
(T/R, OE)
Current
I
Quiescent Supply Current
5.5
4.0
40.0
V
V
or GND
CC
IN
CC
www.fairchildsemi.com
2
Noise Characteristics
V
T
25 C
Limits
CC
A
Symbol
Parameter
Units
Conditions
(V)
Typ
V
Quiet Output Maximum
5.0
0.9
1.2
1.2
3.5
1.5
V
C
C
C
C
50 pF
50 pF
50 pF
50 pF
OLP
L
L
L
L
(Note 3)
Dynamic V
OL
V
V
V
Quiet Output Minimum
(Note 3) Dynamic V
5.0
5.0
5.0
0.9
V
V
V
OLV
OL
Minimum HIGH Level
(Note 3) Dynamic Input Voltage
Maximum LOW Level
(Note 3) Dynamic Input Voltage
IHD
ILD
Note 3: Parameter guaranteed by design.
AC Electrical Characteristics
V
T
25 C
T
A
40 C to 85 C
CC
A
Symbol
Parameter
Units
Conditions
(V)
Min
Typ
Max
8.4
Min
Max
10.0
13.5
6.5
t
t
Propagation Delay
Time
3.3 0.3
5.8
8.3
4.0
5.5
8.5
11.0
5.8
7.3
11.5
7.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
C
C
C
C
C
C
C
C
C
C
C
C
15 pF
50 pF
15 pF
50 pF
15 pF
50 pF
15 pF
50 pF
50 pF
50 pF
50 pF
50 pF
PLH
L
L
L
L
L
L
L
L
L
L
L
L
ns
ns
ns
ns
ns
11.9
5.5
PHL
5.0 0.5
3.3 0.3
5.0 0.5
7.5
8.5
t
t
3-STATE Output
Enable Time
13.2
15.5
19.0
10.0
12.0
18.0
11.0
1.5
PZL
PZH
16.7
8.5
R
R
1 k
1 k
L
L
10.6
15.8
9.7
t
t
t
t
3-STATE Output
Disable Time
Output to Output
Skew
3.3 0.3
5.0 0.5
3.3 0.3
5.0 0.5
PLZ
PHZ
1.5
OSLH
OSHL
ns
(Note 4)
1.0
1.0
C
Input Capacitance
4
10
10
pF
V
Open
IN
CC
(T/R, OE)
C
C
Output Capacitance
Power Dissipation
Capacitance
8
pF
pF
V
5.0V
I/O
PD
CC
21
(Note 5)
Note 4: Parameter guaranteed by design. t
|t
t
|; t
|t
t
|
OSLH
PLH max
PLH min OSHL
PHL max
PHL min
Note 5: C is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average
PD
operating current can be obtained by the equation: I (opr.)
C
* V * f
I
/8 (per Bit).
CC
CC
PD
CC
IN
3
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
www.fairchildsemi.com
4
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
5
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC20
www.fairchildsemi.com
6
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Package Number N20A
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.
www.fairchildsemi.com
7
www.fairchildsemi.com
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.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
Literature Distribution Center for ON Semiconductor
19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
© Semiconductor Components Industries, LLC
www.onsemi.com
相关型号：
74VHC245MTCX_NL
Bus Transceiver, AHC/VHC Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, 4.40 MM, MO-153, TSSOP-20
FAIRCHILD
74VHC245MTC_NL
Bus Transceiver, AHC/VHC Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, 4.40 MM, MO-153, TSSOP-20
FAIRCHILD
©2020 ICPDF网 联系我们和版权申明