74HC390D NXP Semiconductors, 74HC390D Datasheet - Page 4

• Manufacturer Part Number: 74HC390D
• Description: IC, 74HC CMOS, SMD, 74HC390, SOIC16
• Manufacturer: NXP Semiconductors

Specifications of 74HC390D

• Counter Type: Decade
• Clock Frequency: 71MHz
• Count Maximum: 10
• Supply Voltage Range: 2V To 6V
• Logic Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC
• Base Number: 74
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
December 1990
Dual decade ripple counter
Fig.4 Functional diagram.
BCD COUNT SEQUENCE
FOR 1/2 THE “390”
Notes
1. Output Q
Fig.5 Logic diagram (one counter).
COUNT
with counter input on nCP
H = HIGH voltage level
L = LOW voltage level
0
1
2
3
4
5
6
7
8
9
L
H
L
H
L
H
L
H
L
H
0
Q
connected to nCP
0
4
L
L
H
H
L
L
H
H
L
L
OUTPUTS
Q
1
L
L
L
L
H
H
H
H
L
L
Q
2
0
L
L
L
L
L
L
L
L
H
H
.
Q
1
3
BI-QUINARY COUNT SEQUENCE
FOR 1/2 THE “390”
Note
1. Output Q
COUNT
with counter input on nCP
0
1
2
3
4
5
6
7
8
9
74HC/HCT390
L
L
L
L
L
H
H
H
H
H
3
Q
connected to nCP
0
Product specification
L
H
L
H
L
L
H
L
H
L
OUTPUTS
Q
1
L
L
H
H
L
L
L
H
H
L
Q
2
1
L
L
L
L
H
L
L
L
L
H
.
Q
0
3