74HC390DB,118 NXP Semiconductors, 74HC390DB,118 Datasheet - Page 4

• Manufacturer Part Number: 74HC390DB,118
• Description: IC DUAL DEC RIPPLE COUNT 16SSOP
• Manufacturer: NXP Semiconductors
• Series: 74HCr

Specifications of 74HC390DB,118

• Package / Case: 16-SSOP
• Logic Type: Counter, Decade
• Direction: Up
• Number Of Elements: 2
• Number Of Bits Per Element: 4
• Reset: Asynchronous
• Count Rate: 71MHz
• Trigger Type: Negative Edge
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Timing: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 74HC390DB-T; 74HC390DB-T; 935189330118

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