74VHC138MX [ONSEMI]
3-8 解码器/信号分离器;
| 型号： | 74VHC138MX |
| 厂家： | 
ONSEMI |
| 描述： | 3-8 解码器/信号分离器 驱动 输入元件 光电二极管 逻辑集成电路 解码器 |
| 文件： | 总9页 (文件大小：185K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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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
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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.
November 1992
Revised April 1999
74VHC138
3-to-8 Decoder/Demultiplexer
0V to 7V can be applied to the input pins without regard to
the supply voltage. This device can be used to interface 5V
to 3V systems and two supply systems such as battery
back up. This circuit prevents device destruction due to
mismatched supply and input voltages.
General Description
The VHC138 is an advanced high speed CMOS 3-to-8
decoder/demultiplexer fabricated with silicon gate CMOS
technology. It achieves the high speed operation similar to
equivalent Bipolar Schottky TTL while maintaining the
CMOS low power dissipation.
Features
When the device is enabled, 3 binary select inputs (A0, A1
and A2) determine which one of the outputs (O0–O7) will go
LOW. When enable input E3 is held LOW or either E1 or E2
■ High Speed: tPD = 5.7ns (typ) at TA = 25°C
■ Low power dissipation: ICC = 4 µA (max.) at TA = 25°C
■ High noise immunity: VNIH = VNIL = 28% VCC (min.)
is held HIGH, decoding function is inhibited and all outputs
go HIGH. E3, E1 and E2 inputs are provided to ease cas-
■ Power down protection provided on all inputs
■ Pin and function compatible with 74HC138
cade connection and for use as an address decoder for
memory systems. An input protection circuit ensures that
Ordering Code:
Order Number Package Number
Package Description
74VHC138M
74VHC138SJ
74VHC138MTC
74VHC138N
M16A
M16D
MTC16
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
16-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.
Logic Symbols
Connection Diagram
IEEE/IEC
Pin Descriptions
Pin Names
Description
A0–A2
E1–E2
E3
Address Inputs
Enable Inputs
Enable Input
Outputs
O0–O7
© 1999 Fairchild Semiconductor Corporation
DS011537.prf
www.fairchildsemi.com
Truth Table
Inputs
Outputs
E1
E2
E3
A0
A1
A2
O0
O1
O2
O3
O4
O5
O6
O7
H
X
X
X
H
X
X
X
L
X
X
X
X
X
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
H
L
H
L
L
L
L
L
L
L
L
H
H
H
H
L
H
H
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
H
L
H
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
L
H
H
L
H
H
H
L
H
H
H
H
H
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
www.fairchildsemi.com
2
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions (Note 2)
Supply Voltage (VCC
DC Input Voltage (VIN
DC Output Voltage (VOUT
Input Diode Current (IIK
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
Output Voltage (VOUT
Operating Temperature (TOPR
Input Rise and Fall Time (tr, tf)
)
2.0V to +5.5V
0V to +5.5V
)
)
)
)
0V to VCC
)
±20 mA
)
−40°C to +85°C
)
±25 mA
)
±75 mA
V
V
CC = 3.3V ± 0.3V
CC = 5.0V ± 0.5V
0
100 ns/V
Storage Temperature (TSTG
Lead Temperature (TL)
(Soldering, 10 seconds)
)
−65°C to +150°C
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 must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
T
= 25°C
T = −40°C to +85°C
A
V
(V)
A
CC
Symbol
Parameter
Units
Conditions
Min
Typ
Max
Min
1.50
0.7 V
Max
V
V
V
HIGH Level Input Voltage
2.0
1.50
IH
V
V
3.0 − 5.5 0.7 V
2.0
CC
CC
LOW Level Input Voltage
HIGH Level Output Voltage
0.50
0.50
IL
3.0 − 5.5
0.3 V
0.3 V
CC
CC
2.0
3.0
1.9
2.0
3.0
4.5
1.9
2.9
V
V
= V I = −50 µA
IH OH
OH
IN
2.9
4.4
V
V
V
V
or V
IL
4.5
4.4
3.0
2.58
3.94
2.48
3.80
I
I
= −4 mA
= −8 mA
= 50 µA
OH
OH
4.5
V
LOW Level Output Voltage
2.0
0.0
0.0
0.0
0.1
0.1
0.1
0.1
= V I
IH OL
OL
IN
3.0
or V
IL
4.5
0.1
0.1
3.0
0.36
0.36
±0.1
4.0
0.44
0.44
±1.0
40.0
I
I
= 4 mA
= 8 mA
OL
OL
4.5
I
Input Leakage Current
0 − 5.5
5.5
µA
µA
V
V
= 5.5V or GND
IN
IN
IN
I
Quiescent Supply Current
= V or GND
CC
CC
3
www.fairchildsemi.com
AC Electrical Characteristics
T
= 25°C
T = −40°C to +85°C
A
V
(V)
A
CC
Symbol
Parameter
Units
ns
Conditions
= 15 pF
Min
Typ
8.2
Max
11.4
15.8
Min
Max
13.5
18.0
t
t
Propagation Delay
3.3 ± 0.3
1.0
1.0
C
C
PLH
L
10.0
= 50 pF
A
to O
n
L
PHL
n
5.0 ± 0.5
3.3 ± 0.3
5.7
7.2
8.1
1.0
1.0
1.0
1.0
9.5
C
C
C
C
= 15 pF
= 50 pF
= 15 pF
= 50 pF
L
L
L
L
ns
10.1
12.8
16.3
11.5
15.0
18.5
t
t
Propagation Delay
to O
8.1
PLH
PHL
ns
10.6
E
3
n
5.0 ± 0.5
3.3 ± 0.3
5.6
7.1
8.1
1.0
1.0
1.0
1.0
9.5
C
C
C
C
= 15 pF
= 50 pF
= 15 pF
= 50 pF
L
L
L
L
ns
10.1
11.4
14.9
11.5
13.5
17.0
t
t
Propagation Delay
or E to O
8.2
PLH
PHL
ns
10.7
E
1
2
n
5.0 ± 0.5
5.8
7.3
4
8.1
10.1
10
1.0
1.0
9.5
11.5
10
C
C
= 15 pF
= 50 pF
L
ns
L
C
C
Input Capacitance
Power Dissipation
Capacitance
pF
pF
V
= Open
IN
CC
34
(Note 3)
PD
Note 3: 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 .
CC
CC
PD
CC
IN
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4
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
Package Number M16A
16-Lead Small Outline Package (SOP) EIAJ TYPE II, 5.3mm Wide
Package Number M16D
5
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC16
www.fairchildsemi.com
6
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Package Number N16E
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
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.
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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