MAX6958 Maxim, MAX6958 Datasheet - Page 4

• Manufacturer Part Number: MAX6958
• Description: 2-Wire Interfaced / 3V to 5.5V / 4-Digit / 9-Segment LED Display Drivers with Keyscan
• Manufacturer: Maxim

2-Wire Interfaced, 3V to 5.5V, 4-Digit,
9-Segment LED Display Drivers with Keyscan
(V+ = 5V, LED forward voltage = 2.4V, T
4
42.2
42.0
41.8
41.6
41.4
41.2
41.0
40.8
40.6
40.4
800
795
790
785
780
775
770
765
760
755
_______________________________________________________________________________________
-40
3.0
KEYSCAN DEBOUNCE TIME (t
-20
3.5
4.5V
vs. SUPPLY VOLTAGE
0
SCAN RATE (f
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
20
5V
4.0
40
V
1V/div
DIG0
SEG0
5.5V
4.5
/
60
SCAN
3V
80
)
DEBOUNCE
5.0
WAVEFORM AT DIG0/SEG0,
100
FULL INTENSITY
120
5.5
A
)
200µs/div
= +25°C, unless otherwise noted.)
42.5
42.0
41.5
41.0
40.5
40.0
25
20
15
10
5
0
4.50
-40
KEYSCAN DEBOUNCE TIME (t
V
LED
-20
= 2.4V
SEGMENT SOURCE CURRENT
4.75
vs. SUPPLY VOLTAGE
0
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
20
4.5V
3V
5.00
40
Typical Operating Characteristics
60
5V
45
40
35
30
25
20
15
10
5
0
5.25
-40
80
DEBOUNCE
5.5V
100
-20
INPUT PULLUP CURRENT
5.50
120
0
)
vs. TEMPERATURE
TEMPERATURE (°C)
20
5.5V
3V
40
790
785
780
775
770
765
760
25
20
15
10
5
0
60
3.0
3.0
5V
V
LED
80
SEGMENT SOURCE CURRENT
= 2V
3.5
4.5V
3.5
100
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
SCAN RATE (f
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
120
4.0
4.0
4.5
4.5
SCAN
)
5.0
5.0
5.5
5.5