54HC4538 データシートの表示（PDF） - STMicroelectronics
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54HC4538 Datasheet PDF : 14 Pages
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M 54/ M74H C4538
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC
(V)
TA = 25 oC
54HC and 74HC
Value
-40 to 85 oC -55 to 125 oC Unit
74HC
54HC
Min. Typ. Max. Min. Max. Min. Max.
tTLH Output Transition 2.0
tTHL Time
4.5
30 75
8
15
95
110
19
22
ns
6.0
7
13
16
19
tPLH Propagation
2.0
tPHL Delay Time
4.5
(A, B - Q, Q)
6.0
120 250
315
375
30 50
63
75
ns
25 43
54
64
tPLH Propagation
2.0
tPHL Delay Time
4.5
(CD - Q, Q)
6.0
100 195
245
295
25 39
49
59
ns
20 33
42
50
tWOUT Output Pulse
Width
2.0
RX = 5KΩ
4.5 CX = 0 RX = 1KΩ
6.0
RX = 1KΩ
540 1200
180 250
150 200
1500
320
260
1800
375 ns
320
2.0 CX = 0.01 µF
4.5
RX = 10KΩ
70 83 96 70 96 70 96
69 77 85 69 85 69 85
µs
6.0
69 77 85 69 85 69 85
2.0
4.5
CX = 0.1 µF
RX = 10KΩ
0.67 0.75 0.83 0.67 0.83 0.67 0.9
0.67 0.73 0.77 0.67 0.77 0.67 0.8
ms
6.0
0.67 0.73 0.77 0.67 0.77 0.67 0.8
∆tWOUT Output Pulse
±1
Width Error
Between Circuits
%
(In same pack)
tW(H) Minimum Pulse
2.0
tW(L) Width
4.5
(CLOCK)
6.0
30 75
8
15
7
13
95
110
19
22
ns
16
19
tW(L) Minimum Pulse 2.0
Width
4.5
(CLEAR)
6.0
30 75
8
15
7
13
95
110
19
22
ns
16
19
tREM Minimum Clear
2.0
Removal Time
4.5
0
15
15
20
0
5
5
7
ns
6.0
0
5
5
ts
Minimum
Retrigger Time
2.0
CX = 0.1 µF
4.5
RX = 1KΩ
380
92
6.0
72
6
ns
2.0 CX = 0.01 µF
6
4.5
RX = 1KΩ
1.4
µs
6.0
1.2
CIN Input Capacitance
5
10
10
10 pF
CPD (*) Power Dissipation
70
Capacitance
pF
(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC‘ •Duty/100 + ICC/2 (per circuit)
(ICC‘ = Active Supply Current)
(Duty = %))
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