CD54HC190 Datasheet, PDF (14/26 Pages) Texas Instruments – SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

CD54HC190, CD74HC190
CD54HC191, CD74HC191, CD54HCT191, CD74HCT191
SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
SCHS275E − MARCH 2002 − REVISED OCTOBER 2003
’HC190, ’HC191
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 4)
PARAMETER
fmax
tpd
tt
FROM
(INPUT)
LOAD
A, B, C,
or D
CLK
CLK
CLK
D/U
D/U
CTEN
TO
(OUTPUT)
LOAD
CAPACITANCE
VCC
Q
Q
Q
RCO
MAX/MIN
RCO
MAX/MIN
RCO
Any
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
2V
4.5 V
6V
2V
4.5 V
6V
5V
2V
4.5 V
6V
5V
2V
4.5 V
6V
5V
2V
4.5 V
6V
5V
2V
4.5 V
6V
5V
2V
4.5 V
6V
5V
2V
4.5 V
6V
5V
2V
4.5 V
6V
5V
2V
4.5 V
6V
TA = 25°C
MIN TYP MAX
6
30
35
195
39
33
16
175
35
30
14
170
34
29
14
125
25
21
10
210
42
36
18
150
30
26
12
165
33
28
13
125
25
21
10
75
15
13
TA = −55°C
TO 125°C
MIN MAX
4
20
23
295
59
50
265
53
45
255
51
43
190
38
32
315
63
54
225
45
38
250
50
43
190
38
32
110
22
19
TA = −40°C
TO 85°C
MIN MAX
5
25
29
245
49
42
220
44
37
215
43
37
155
31
26
265
53
45
190
38
33
205
41
35
155
31
26
95
19
16
UNIT
MHz
ns
ns
14
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