CNT7 Datasheet, PDF (5/7 Pages) ABCircuits – Dual Decade Counter to Seven Segment Controller

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Using Drivers For Brighter Displays
VCC
COUNT
CLEAR
VCC
28
19
9
5
26
4
10
VDD
NC
NC
NC
NC
NC
CB
CNT7
1
SEGLG
SEGLF
23
6
22
2
3
4
IN1
IN2
IN3
SEGLE
SEGLD
SEGLC
SEGLB
7
21
8
20
5
6
7
8
IN4
IN5
IN6
IN7
SEGLA
IN8
18
OUT1
OUT2
OUT3
17
16
15
OUT4
OUT5
OUT6
OUT7
14
13
12
11
OUT8
3
1
CLK
DEB
25 _SW-
2
27
24
CLR-
POL
14
UP
VSS
ULN2804
ULN2804
SEGRG
18
11
1
2
3
IN1
IN2
SEGRF
SEGRE
SEGRD
SEGRC
17
12
16
13
4
5
6
7
IN3
IN4
IN5
IN6
SEGRB
SEGRA
15
8
IN7
IN8
OUT1
OUT2
18
17
16
OUT3
OUT4
OUT5
OUT6
15
14
13
12
OUT7
OUT8
11
VCC
LEFT COMMON
ANODE
DISPLAY
VCC
A ^COM
G
F_F
B
E
G
D
C
B
E
D
C
A
RIGHT COMMON
ANODE DISPLAY _VCC
A ^COM
G
F_F
B
E
G
D
C
B
A
E
D
C
Counter Expansion Example
DISPLAY DISPLAY
DISPLAY DISPLAY
DISPLAY DISPLAY
CNT7
10 _CB
SEGL
3
CLK
SEGR
CNT7
10 _CB
SEGL
3
CLK
SEGR
DISPLAY EXPANSION EXAMPLE
CNT7
10 _CB
SEGL
CLK
3
CLK
SEGR
Absolute Maximum Ratings
Symbol
T_stg
T_a
V_dd
V_io
I_mio
ESD
Description
Storage Temperature
Operating Temperature
V_dd - V_ss Voltage
Input Voltage
Maximum current into any pin
Electrostatic Discharge Voltage
Min
-55
-40
-0.5
V_ss - 0.5
-25
2000
LU
Latch up current
Typical
25
Max
+100
+85
+6.0
V_dd +0.5
+50
200
Units
ºC
ºC
V
V
mA
V
mA
Notes
Human Body Model
ESD
Part Number CNT7
Copyright © 2014 ABCircuits. Revised September 2014 Page 5 of 7