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MC74HC4538A Datasheet(PDF) 3 Page - ON Semiconductor

Part No. MC74HC4538A
Description  Dual Precision Monostable Multivibrator (Retriggerable,Resettable)
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74HC4538A Datasheet(HTML) 3 Page - ON Semiconductor

 
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MC74HC4538A
http://onsemi.com
3
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage
*0.5 to )7.0
V
VI
DC Input Voltage
*0.5 v VI v VCC )0.5
V
VO
DC Output Voltage
(Note 1)
*0.5 v VO v VCC )0.5
V
IIK
DC Input Diode Current
A, B, Reset
CX, RX
$20
$30
mA
IOK
DC Output Diode Current
$25
mA
IO
DC Output Sink Current
$25
mA
ICC
DC Supply Current per Supply Pin
$100
mA
IGND
DC Ground Current per Ground Pin
$100
mA
TSTG
Storage Temperature Range
*65 to )150
_C
TL
Lead temperature, 1 mm from Case for 10 Seconds
260
_C
TJ
Junction temperature under Bias
)150
_C
qJA
Thermal resistance
PDIP
SOIC
TSSOP
78
112
148
_C/W
PD
Power Dissipation in Still Air at 85
_C
PDIP
SOIC
TSSOP
750
500
450
mW
MSL
Moisture Sensitivity
Level 1
FR
Flammability Rating
Oxygen Index: 30% − 35%
UL−94−VO (0.125 in)
VESD
ESD Withstand Voltage
Human Body Model (Note 2)
Machine Model (Note 3)
Charged Device Model (Note 4)
>2000
>100
>500
V
ILatchup
Latchup Performance
Above VCC and Below GND at 85_C (Note 5)
$300
mA
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. IO absolute maximum rating must be observed.
2. Tested to EIA/JESD22−A114−A.
3. Tested to EIA/JESD22−A115−A.
4. Tested to JESD22−C101−A.
5. Tested to EIA/JESD78.
6. For high frequency or heavy load considerations, see the ON Semiconductor High−Speed CMOS Data Book (DL129/D).
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
VCC
DC Supply Voltage (Referenced to GND)
3.0*
6.0
V
Vin, Vout
DC Input Voltage, Output Voltage (Referenced to GND)
0
VCC
V
TA
Operating Temperature, All Package Types
–55
+125
_C
tr, tf
Input Rise and Fall Time
VCC = 2.0 V
(Figure 7)
VCC = 4.5 V
VCC = 6.0 V
A or B (Figure 5)
0
0
0
1000
500
400
No Limit
ns
Rx
External Timing Resistor
VCC < 4.5 V
VCC ≥ 4.5 V
1.0
2.0
k
W
Cx
External Timing Capacitor
0
mF
*The HC4538A will function at 2.0 V but for optimum pulse−width stability, VCC should be above 3.0 V.
†The maximum allowable values of Rx and Cx are a function of the leakage of capacitor Cx, the leakage of the HC4538A, and leakage due to board layout
and surface resistance. For most applications, Cx/Rx should be limited to a maximum value of 10 mF/1.0 MW. Values of Cx >1.0 mF may cause a
problem during power down (see Power Down Considerations). Susceptibility to externally induced noise signals may occur for Rx >1.0 MW.
7. Unused inputs may not be left open. All inputs must be tied to a high−logic voltage level or a low−logic input voltage level.
8. Information on typical parametric values can be found in the ON Semiconductor High−Speed CMOS Data Book (DL129/D).


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