HCC4098B Datasheet, PDF (2/14 Pages) STMicroelectronics – DUAL MONOSTABLE MULTIVIBRATOR

HCC/HCF4098B
pulse one period) on the application of each new
trigger pulse. For operation in the non-triggerable
mode, Q is connected to –TR when leading-edge
triggering (+ TR) is used or Q is connected to + TR
when trailing-edge triggering (– TR) is used. The time
period (T) for this multivibrator can be approximated
by TX = 1/2 RX CX for CX ≥ 0.01 µF. Time periods as
a function of RX for values of CX and VDD are given in
fig. 8. Values of T vary from unit to unit and as a func-
tion of voltage, temperature, and R_X C_X. The minimum
value of external resistance, RX, is 5 kΩ. The maxi-
FUNCTIONAL DIAGRAM
mum value of external capacitance, C_X, is 100µF.
Fig.9 shows time periods as a function of C_X forvalues
of RX and VDD. The output pulse width has vari-
ations of ±2.5 % typically, over the temperature range
of – 55°C to 125° C for C_X = 1000pF and R_X = 100
kΩ. For power supply variations of ± 5%, the output
pulse width has variations of ± 0.5% typically, for VDD
= 10V and 15V and ± 1% typically, for VDD = 5 V at
C_X = 1000 pF and R_X = 5kΩ.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V_DD* Supply Voltage : HC C Types
H C F Types
– 0.5 to + 20
V
– 0.5 to + 18
V
V _i Input Voltage
– 0.5 to V_DD + 0.5
V
I_I
DC Input Current (any one input)
± 10
mA
P_{to t} Total Power Dissipation (per package)
Dissipation per Output Transistor
for T_{o p} = Full Package-temperature Range
T _{o p} Operating Temperature : HCC Types
H CF Types
200
mW
100
mW
– 55 to + 125
°C
– 40 to + 85
°C
T _{s tg} Storage Temperature
– 65 to + 150
°C
Stresses above those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating conditions for external periods may affect device reliability.
* All voltage values are referred to VSS pin voltage.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
V_DD Supply Voltage : HC C Types
H CF Types
V_I Input Voltage
T _{o p} Operating Temperature : HCC Types
H CF Types
Value
3 to 18
3 to 15
0 to V_DD
– 55 to + 125
– 40 to + 85
Unit
V
V
V
°C
°C
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