MAX6953 Maxim Integrated Products, MAX6953 Datasheet - Page 4

• Manufacturer Part Number: MAX6953
• Description: 2-Wire Interfaced/ 2.7V to 5.5V/ 4-Digit 5 x 7 Matrix LED Display Driver
• Manufacturer: Maxim Integrated Products

MAX6953 TIMING CHARACTERISTICS (continued)
(V+ = 2.7V to 5.5V, T
2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5
Matrix LED Display Driver
Note 1: All parameters tested at T
Note 2: Guaranteed by design.
Note 3: A master device must provide a hold time of at least 300ns for the SDA signal (referred to V
Note 4: C
Note 5: I
Note 6: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
4
(Typical application circuit, V+ = 3.3V, LED forward voltage = 2.4V, scan limit set to 4 digits, T
Fall Time of SDA Transmitting
Pulse Width of Spike Suppressed
Capacitive Load for Each
Bus Line
4.30
4.20
4.10
4.00
3.90
3.80
_______________________________________________________________________________________
-40
bridge the undefined region of SCL’s falling edge.
SINK
B
PARAMETER
FREQUENCY vs. TEMPERATURE
-20
= total capacitance of one bus line in pF. t
V+ = 5V
INTERNAL OSCILLATOR
≤ 6mA. C
V+ = 2.7V
TEMPERATURE (°C)
0
A
= T
20
B
MIN
= total capacitance of one bus line in pF. t
40
to T
V+ = 3.3V
60
MAX
A
= +25°C. Specifications over temperature are guaranteed by design.
SYMBOL
, unless otherwise noted.) (Note 1)
80
t
C
t
SP
F
B
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
(Notes 2, 5)
(Note 6)
(Note 2)
2.5
INTERNAL OSCILLATOR FREQUENCY
R
and t
vs. SUPPLY VOLTAGE
F
SUPPLY VOLTAGE (V)
3.5
measured between 0.3V+ and 0.7V+.
CONDITIONS
R
and t
Typical Operating Characteristics
4.5
F
measured between 0.3V+ and 0.7V+.
5.5
A
2.5
2.0
1.5
1.0
0.5
0
= +25°C, unless otherwise noted.)
0
MIN
0
WAVEFORM AT OSC (PIN 19 OR 21)
IL
of the SCL signal) in order to
200
INTERNAL OSCILLATOR
0.1C
20 +
400
TYP
50
TIMELINE (ns)
B
400
✕
MAX
250
7
600
UNITS
800
pF
ns
ns