M74HC4538TTR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M74HC4538TTR' PDF : 18 Pages View PDF
M74HC4538
Electrical characteristics
Table 7.
AC electrical characteristics (CL = 50 pF, Input tr = tf = 6 ns) (continued)
Test condition
Value
Symbol
Parameter
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to
125°C
Unit
Min Typ Max Min Max Min Max
2.0
380
4.5
Cx = 0.1 μF
Rx = 1KΩ
92
ns
trr
Minimum
retrigger time
6.0
2.0
72
6
4.5
Cx = 0.01μF
Rx = 1KΩ
1.4
μs
6.0
1.2
Table 8.
Capacitive characteristics
Test condition
Value
Symbol
Parameter
VCC
(V)
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min Typ Max Min Max Min Max
CIN Input capacitance 5.0
CPD
Power dissipation
capacitance (1)
5.0
5 10
10
10 pF
70
pF
1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current
consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation.
ICC(opr) = CPD x VCC x fIN + ICC’ Duty/100 + Ic/2(per monostable) (Icc’ : Active Supply current) (Duty : %)
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