74HC/HCT193 Philips Semiconductors (Acquired by NXP), 74HC/HCT193 Datasheet - Page 6

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

Philips Semiconductors
December 1990
Presettable synchronous 4-bit binary
up/down counter
(1) Clear overrides load, data and
(2) When counting up the count down
Sequence
Clear (reset outputs to zero);
load (preset) to binary thirteen;
count up to fourteen, fifteen,
count down to one, zero,
terminal count up, zero, one
and two;
terminal count down, fifteen,
count inputs.
clock input (CP
when counting down the count up
clock input (CP
D
U
) must be HIGH,
) must be HIGH.
Fig.5 Typical clear, load and count sequence.
Fig.6 Logic diagram.
6
74HC/HCT193
Product specification