4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and

28-Port I/O Expander

4

_______________________________________________________________________________________

OPERATING SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

97.5

70.0

42.5

15.0

-12.5

0.04

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.40

0

-40.0

125.0

V+ = 2.5V TO 5.5V

NO LOAD

ALL PORTS

OUTPUT (1)

ALL PORTS

OUTPUT (0)

ALL PORTS INPUT HIGH

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

97.5

70.0

42.5

15.0

-12.5

4

5

6

7

8

3

-40.0

125.0

V+ = 5.5V

V+ = 3.3V

V+ = 2.5V

OPERATING SUPPLY CURRENT

vs. V+ (OUTPUTS UNLOADED)

V+ (V)

5.0

4.5

4.0

3.5

3.0

2.5

1.0

0.1

2.0

5.5

ALL PORTS OUTPUT (1)

ALL PORTS OUTPUT (0)

ALL PORTS INPUT

(PULLUPS DISABLED)

GPO SINK CURRENT vs. TEMPERATURE

(OUTPUT = 0)

TEMPERATURE (

°C)

97.5

70.0

-12.5

15.0

42.5

4

6

8

10

12

14

16

18

2

-40.0

125.0

GPO SHORT-CIRCUIT CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

97.5

70.0

42.5

15.0

-12.5

10

100

1

-40.0

125.0

GPO = 0, PORT

SHORTED TO V+

GPO = 1, PORT

SHORTED TO GND

GPO SOURCE CURRENT vs. TEMPERATURE

(OUTPUT = 1)

TEMPERATURE (

°C)

97.5

70.0

42.5

15.0

-12.5

3

4

5

6

7

8

9

2

-40.0

125.0

V+ = 5.5V

V+ = 3.3V

V+ = 2.5V

GPI PULLUP CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

97.5

70.0

42.5

15.0

-12.5

100

1000

10

-40.0

125.0

V+ = 5.5V

V+ = 3.3V

V+ = 2.5V

__________________________________________Typical Operating Characteristics