Rainbow Electronics MAX7315 - Manual (Page 5)

MAX7315
8-Port I/O Expander with LED Intensity
Control and Interrupt
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PORT OUTPUT LOW VOLTAGE WITH 50mA
LOAD CURRENT vs. TEMPERATURE
PORT OUTPUT LOW VOLTAGE V
OL
(V)
0.1
0.2
0.3
0.4
0.5
0.6
0
MAX7315 toc04
TEMPERATURE ( °C)
110 95 65 80 -10 5 20 35 50 -25 -40 125
V+ = 3.6V
V+ = 2.7V
V+ = 2V
PORT OUTPUT LOW VOLTAGE WITH 20mA
LOAD CURRENT vs. TEMPERATURE
MAX7315 toc05
TEMPERATURE ( °C)
PORT OUTPUT LOW VOLTAGE V
OL
(V)
110 95 80 65 50 35 20 5 -10 -25
0.1
0.2
0.3
0.4
0.5
0.6
0
-40 125
ALL OUTPUTS LOADED
V+ = 3.6V V+ = 2.7V
V+ = 2V
PWM CLOCK FREQUENCY
vs. TEMPERATURE
MAX7315 toc06
TEMPERATURE ( °C)
PWM CLOCK FREQUENCY
110 95 80 65 50 35 20 5 -10 -25
0.950
1.000
1.050
0.900
0.925
0.975
1.025
-40 125
V+ = 3.6V
V+ = 2V
V+ = 2.7V
NORMALIZED TO V+ = 3.3V, T
A
= +25 °C
SCOPE SHOT OF 2 OUTPUT PORTS
MAX7315 toc07
2ms/div
OUTPUT 1
2V/div
OUTPUT 2
2V/div
MASTER INTENSITY SET TO 1/15
OUTPUT 1 INDIVIDUAL INTENSITY
SET TO 1/16
OUTPUT 2 INDIVIDUAL INTENSITY
SET TO 15/16
SCOPE SHOT OF 2 OUTPUT PORTS
MAX7315 toc08
2ms/div
OUTPUT 1,
2V/div
OUTPUT 2,
2V/div
OUTPUT 1 INDIVIDUAL INTENSITY
SET TO 1/16
MASTER INTENSITY SET TO 14/15
OUTPUT 2 INDIVIDUAL INTENSITY
SET TO 14/15
SINK CURRENT vs. V OL
MAX7315 toc09
SINK CURRENT (mA)
V
OL
(V)
50 40 30 20 10
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0
0
V+ = 2V
V+ = 2.7V
ONLY ONE OUTPUT LOADED
V+ = 3.3V
V+ = 3.6V
Typical Operating Characteristics (continued)
(T A = +25°C, unless otherwise noted.)