16-Port I/O Expander with LED Intensity

Control, Interrupt, and Hot-Insertion Protection

_______________________________________________________________________________________

5

PORT OUTPUT LOW VOLTAGE WITH 50mA

LOAD CURRENT vs. TEMPERATURE

0.1

0.2

0.3

0.4

0.5

0.6

0

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

TEMPERATURE (

°C)

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

TEMPERATURE (

°C)

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

°C

SCOPE SHOT OF 2 OUTPUT PORTS

MAX7313 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

MAX7313 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 (mA)

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)