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参数资料
型号： MC74VHC157DTEL
厂商： ON SEMICONDUCTOR
元件分类： 编、解码器及复用、解复用
英文描述： AHC/VHC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16
封装： TSSOP-16
文件页数： 3/8页
文件大小： 189K
代理商： MC74VHC157DTEL
MC74VHC157
http://onsemi.com
3
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage
– 0.5 to + 7.0
V
VIN
DC Input Voltage
– 0.5 to + 7.0
V
VOUT
DC Output Voltage
– 0.5 to VCC + 0.5
V
IIK
Input Diode Current
– 20
mA
IOK
Output Diode Current
± 20
mA
IOUT
DC Output Current, per Pin
± 25
mA
ICC
DC Supply Current, VCC and GND Pins
± 50
mA
PD
Power Dissipation in Still Air,
SOIC Packages
TSSOP Package
500
450
mW
Tstg
Storage Temperature
– 65 to + 150
_C
* Absolute maximum continuous ratings are those values beyond which damage to the device
may occur. Exposure to these conditions or conditions beyond those indicated may
adversely affect device reliability. Functional operation under absolute–maximum–rated
conditions is not implied.
Derating — SOIC Packages: – 7 mW/
_C from 65_ to 125_C
TSSOP Package: – 6.1 mW/
_C from 65_ to 125_C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
VCC
DC Supply Voltage
2.0
5.5
V
VIN
DC Input Voltage
0
5.5
V
VOUT
DC Output Voltage
0
VCC
V
TA
Operating Temperature
– 55
+ 125
_C
tr, tf
Input Rise and Fall Time
VCC = 3.3V
VCC = 5.0V
0
100
20
ns/V
The
qJA of the package is equal to 1/Derating. Higher junction temperatures may affect the expected lifetime of the device per the table and
figure below.
DEVICE JUNCTION TEMPERATURE VERSUS
TIME TO 0.1% BOND FAILURES
Junction
Temperature
°C
Time, Hours
Time, Years
80
1,032,200
117.8
90
419,300
47.9
100
178,700
20.4
110
79,600
9.4
120
37,000
4.2
130
17,800
2.0
140
8,900
1.0
1
10
100
1000
TIME, YEARS
NORMALIZED
F
AILURE
RA
TE
T J
=
80
C°
T J
=
90
C°
T J
=
100
C°
T J
=
1
10
C°
T J
=
130
C°
T J
=
120
C°
FAILURE RATE OF PLASTIC = CERAMIC
UNTIL INTERMETALLICS OCCUR
Figure 1. Failure Rate vs. Time
Junction Temperature
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high–impedance cir-
cuit. For proper operation, Vin and
Vout should be constrained to the
range GND
v (Vin or Vout) v VCC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or VCC).
Unused outputs must be left open.
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