Rainbow Electronics DS4520 - Manual (Page 4)

DS4520
9-Bit I
2
C Nonvolatile
I/O Expander Plus Memory
4 _____________________________________________________________________
Typical Operating Characteristics
(V CC = +5.0V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
DS4520 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
4.5 4.0 3.5
0.5
1.0
1.5
2.0
0
3.0 5.0
I/O0–I/O7 CONTROL BITS = 0
I/O0–I/O7 PULLUPS DISABLED
V
CC
= SDA = SCL
SUPPLY CURRENT vs. TEMPERATURE
DS4520 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (
µ
A)
80 60 40 20 0 -20
0.5
1.0
1.5
2.0
2.5
0
-40
I/O0–I/O7 CONTROL BITS = 0
I/O0–I/O7 PULLUPS DISABLED
V
CC = SDA = SCL = 5V
SUPPLY CURRENT vs. SCL FREQUENCY
DS4520 toc03
SCL FREQUENCY (kHz)
SUPPLY CURRENT (
µ
A)
300 200 100
2
4
6
8
10
12
14
16
18
20
0
0 400
V CC = SDA = 5V
I/O OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
DS4520 toc04
SUPPLY VOLTAGE (V)
I/O VOLTAGE (V)
5 4 3 2 1
1
2
3
4
5
6
0
0 6
PULLUPS ENABLED
PULLDOWNS DISABLED
HIGH IMPEDANCE
EEPROM RECALL AT V POR