SN54-74LS192 Datasheet, PDF (2/7 Pages) ON Semiconductor – PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER

SN54/74LS192 • SN54/74LS193
STATE DIAGRAMS
0
1
2
3
4
15
5
14
6
13
7
12
11
10
9
8
LS192
LS192 LOGIC EQUATIONS
FOR TERMINAL COUNT
TCU = Q0 ⋅ Q3 ⋅ CPU
TCD = Q0 ⋅ Q1 ⋅ Q2 ⋅ Q3 ⋅ CPD
LS193 LOGIC EQUATIONS
FOR TERMINAL COUNT
TCU = Q0 ⋅ Q1⋅ Q2⋅ Q3 ⋅ CPU
TCD = Q0 ⋅ Q1 ⋅ Q2 ⋅ Q3 ⋅ CPD
COUNT UP
COUNT DOWN
0
1
2
3
4
15
5
14
6
13
7
12
11
10
9
8
LS193
LOGIC DIAGRAMS
P0
P1
P2
P3
PL ¹¹
15
1
10
9
(LOAD)
CPU ⁵
(UP COUNT)
12 ^TCU
(CARRY
OUTPUT)
SD _Q
T
CD ^Q
SD _Q
T
CD ^Q
SD _Q
T
CD ^Q
SD _Q
T
CD ^Q
CPD ₄
(DOWN
COUNT)
MR
14
(CLEAR)
3
Q0
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
2
6
Q1
Q2
LS192
13 TCD
(BORROW
OUTPUT)
7
Q3
FAST AND LS TTL DATA
5-2