74hct191 NXP Semiconductors, 74hct191 Datasheet - Page 12

• Manufacturer Part Number: 74hct191
• Description: Presettable Synchronous 4-bit Binary Up/down Counter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC WAVEFORMS
December 1990
Presettable synchronous 4-bit binary
up/down counter
(1) HC : V
Fig.10 Waveforms showing the clock (CP) to output (Q
(1) HC : V
Fig.11 Waveforms showing the clock and count enable inputs (CP, CE) to ripple clock output (RC) propagation
(1) HC : V
HCT : V
HCT : V
HCT : V
maximum clock pulse frequency.
delays.
M
M
M
M
M
M
= 50%; V
= 1.3 V; V
= 50%; V
= 1.3 V; V
= 50%; V
= 1.3 V; V
I
I
I
Fig.12 Waveforms showing the input (D
I
I
I
= GND to V
= GND to V
= GND to V
= GND to 3 V.
= GND to 3 V.
= GND to 3 V.
CC
CC
CC
.
.
.
12
n
) propagation delays, the clock pulse width and the
n
) to output (Q
n
) propagation delays.
74HC/HCT191
Product specification