74HC390 Philips, 74HC390 Datasheet - Page 3

• Manufacturer Part Number: 74HC390
• Description: Dual decade ripple counter
• Manufacturer: Philips

Philips Semiconductors
ORDERING INFORMATION
See
PIN DESCRIPTION
December 1990
PIN NO.
1, 15
2, 14
3, 5, 6, 7
4, 12
8
13, 11, 10, 9
16
Dual decade ripple counter
“74HC/HCT/HCU/HCMOS Logic Package Information”
Fig.1 Pin configuration.
SYMBOL
1CP
1MR, 2MR
1Q
1CP
GND
2Q
V
CC
0
0
0
1
to 1Q
to 2Q
, 2CP
, 2CP
3
3
0
1
NAME AND FUNCTION
clock input divide-by-2 section (HIGH-to-LOW, edge-triggered)
asynchronous master reset inputs (active HIGH)
flip-flop outputs
clock input divide-by-5 section (HIGH-to-LOW, edge triggered)
ground (0 V)
flip-flop outputs
positive supply voltage
Fig.2 Logic symbol.
3
.
Fig.3 IEC logic symbol.
74HC/HCT390
Product specification