74HCT390DB,112 NXP Semiconductors, 74HCT390DB,112 Datasheet - Page 4
![IC DUAL DEC RIPPLE COUNT 16-SSOP](/photos/6/52/65289/16-ssop_sot338-1_sml.jpg)
74HCT390DB,112
Manufacturer Part Number
74HCT390DB,112
Description
IC DUAL DEC RIPPLE COUNT 16-SSOP
Manufacturer
NXP Semiconductors
Series
74HCTr
Datasheets
1.74HCT4046ADB112.pdf
(19 pages)
2.74HCT4046ADB112.pdf
(23 pages)
3.74HC390N652.pdf
(7 pages)
Specifications of 74HCT390DB,112
Package / Case
16-SSOP
Logic Type
Counter, Decade
Direction
Up
Number Of Elements
2
Number Of Bits Per Element
4
Reset
Asynchronous
Count Rate
55MHz
Trigger Type
Negative Edge
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Counter Type
Decade Counters
Logic Family
74HCT
Number Of Bits
4
Operating Supply Voltage
4.5 V to 5.5 V
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
568-2834-5
935189930112
935189930112
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