74HC/HCT193 Philips Semiconductors (Acquired by NXP), 74HC/HCT193 Datasheet - Page 5

• Manufacturer Part Number: 74HC/HCT193
• Description: Presettable Synchronous 4-bit Binary Up/down Counter
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
FUNCTION TABLE
Notes
1. H
2. TC
3. TC
December 1990
OPERATING MODE
reset (clear)
parallel load
count up
count down
Presettable synchronous 4-bit binary
up/down counter
L
X
U
D
= HIGH voltage level
= LOW voltage level
= LOW-to-HIGH clock transition
= don’t care
= CP
= CP
U
D
at terminal count up (HHHH)
at terminal count down (LLLL)
H
H
L
L
L
L
L
L
MR
X
X
L
L
L
L
H
H
PL
X
X
X
X
L
H
H
CP
Fig.4 Functional diagram.
U
INPUTS
L
H
L
H
X
X
H
CP
D
X
X
L
L
H
H
X
X
D
5
0
X
X
L
L
H
H
X
X
D
1
X
X
L
L
H
H
X
X
D
2
X
X
L
L
H
H
X
X
D
3
L
L
L
L
H
H
Q
0
count down
count up
L
L
L
L
H
H
Q
1
74HC/HCT193
OUTPUTS
L
L
L
L
H
H
Q
2
Product specification
L
L
L
L
H
H
Q
3
H
H
H
H
L
H
H
H
TC
(2)
U
L
H
L
H
H
H
H
H
TC
(3)
D