74HC/HCT192 Philips Semiconductors (Acquired by NXP), 74HC/HCT192 Datasheet - Page 5

• Manufacturer Part Number: 74HC/HCT192
• Description: Presettable Synchronous BCD Decade Up/down Counter
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
FUNCTION TABLE
Notes
1. H = HIGH voltage level
2. TC
3. TC
December 1990
OPERATING MODE
reset (clear)
parallel load
count up
count down
Presettable synchronous BCD decade
up/down counter
L = LOW voltage level
X = don’t care
= LOW-to-HIGH clock transition
U
D
= CP
= CP
U
D
at terminal count up (HLLH)
at terminal count down (LLLL)
H
H
L
L
L
L
L
L
MR PL
X
X
L
L
L
L
H
H
X
X
X
X
L
H
H
CP
Fig.4 Functional diagram.
U
L
H
L
H
X
X
H
CP
INPUTS
D
X
X
L
L
H
H
X
X
D
5
0
X
X
L
L
X
X
X
X
D
1
X
X
L
L
X
X
X
X
D
2
X
X
L
L
H
H
X
X
D
3
L
L
L
L
Q
0
count down
L
L
L
L
count up
Q
Q
Q
1
n
n
= D
= D
74HC/HCT192
L
L
L
L
OUTPUTS
Q
n
n
2
Product specification
L
L
L
L
Q
3
H
H
H
H
L
H
H
H
TC
(2)
U
L
H
L
H
H
H
H
H
TC
(3)
D