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54LS191J View Datasheet(PDF) - Motorola => Freescale

Part NameDescriptionManufacturer
54LS191J PRESETTABLE BCD/DECADE PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS Motorola
Motorola => Freescale Motorola
54LS191J Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
SN54/74LS190 SN54/74LS191
STATE DIAGRAMS
0
1
2
3
4
15
5
14
6
13
7
12
11
10
9
8
LS190
UP:
DOWN:
LS190
⋅ ⋅ TC = Q0 Q3 (U/D)
⋅ ⋅ ⋅ ⋅ TC = Q0 Q1 Q2 Q3 (U/D)
UP:
DOWN:
LS191
⋅ ⋅ ⋅ ⋅ TC = Q0 Q1 Q2 Q3 (U/D)
⋅ ⋅ ⋅ ⋅ TC = Q0 Q1 Q2 Q3 (U/D)
COUNT UP
COUNT DOWN
0
1
2
3
4
15
5
14
6
13
7
12
11
10
9
8
LS191
LOGIC DIAGRAMS
CP U/D
14
5
P0
15
CE
4
P1
1
P2
10
P3
9
PL
11
13
12
RC TC
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
J CLOCK K
PRESET CLEAR
Q
Q
3
Q0
J CLOCK K
PRESET CLEAR
Q
Q
J CLOCK K
PRESET CLEAR
Q
Q
2
6
Q1
Q2
DECADE COUNTER
LS190
J CLOCK K
PRESET CLEAR
Q
Q
7
Q3
FAST AND LS TTL DATA
5-342
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