74HC190 Ver la hoja de datos (PDF) - Philips Electronics
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74HC190 Datasheet PDF : 13 Pages
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Philips Semiconductors
Presettable synchronous BCD decade
up/down counter
Product specification
74HC/HCT190
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HC
+25
−40 TO +85
UNIT
−40 TO +125
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
CP to Qn
tPHL/ tPLH propagation delay
CP to TC
72 220
275
26 44
55
21 37
47
83 255
320
30 51
64
24 43
54
330 ns
66
56
385 ns
77
65
2.0 Fig.10
4.5
6.0
2.0 Fig.10
4.5
6.0
tPHL/ tPLH propagation delay
CP to RC
44 150
190
16 30
38
13 26
33
225 ns
45
38
2.0 Fig.11
4.5
6.0
tPHL/ tPLH propagation delay
CE to RC
tPHL/ tPLH propagation delay
Dn to Qn
33 130
165
12 26
33
10 22
28
63 220
275
23 44
55
18 37
47
195 ns
39
33
330 ns
66
56
2.0 Fig.11
4.5
6.0
2.0 Fig.12
4.5
6.0
tPHL/ tPLH propagation delay
PL to Qn
63 220
275
23 44
55
18 37
47
330 ns
66
56
2.0 Fig.13
4.5
6.0
tPHL/ tPLH propagation delay
U/D to TC
tPHL/ tPLH propagation delay
U/D to RC
44 190
240
16 38
48
13 32
41
50 210
265
18 42
53
14 36
45
285 ns
57
48
315 ns
63
54
2.0 Fig.14
4.5
6.0
2.0 Fig.14
4.5
6.0
tTHL/ tTLH output transition time
19 75
95
7 15
19
6 13
16
110 ns
22
19
2.0 Fig.15
4.5
6.0
tW
clock pulse width
155 28
HIGH or LOW
31 10
26 8
tW
parallel load pulse width 100 25
LOW
20 9
17 7
195
235
ns 2.0 Fig.10
39
47
4.5
33
40
6.0
125
150
ns 2.0 Fig.15
25
30
4.5
21
26
6.0
December 1990
8
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