mm74hct191 National Semiconductor Corporation, mm74hct191 Datasheet - Page 5

• Manufacturer Part Number: mm74hct191
• Description: Mm54hct190/mm74hct190 Synchronous Decade Up/ Down Counters With Mode Control. Mm54hct191/ Mm74hct191 Synchronous Binary Up/down Counters With Mode Control
• Manufacturer: National Semiconductor Corporation

Timing Diagrams
Sequence
Sequence
(1) Load (preset) to BCD seven
(2) Count up to eight nine zero one and two
(1) Load (preset) to binary thirteen
(2) Count up to fourteen fifteen zero one and two
Typical Load Count and Inhibit Sequences
Typical Load Count and Inhibit Sequence
’HCT190 Synchronous Decade Counters
’HCT191 Synchronous Binary Counters
(3) Inhibit
(4) Count down to one zero nine eight and seven
(3) Inhibit
(4) Count down to one zero fifteen fourteen and thirteen
5
TL F 5744 – 5
TL F 5744 – 6