Datasheet

(R
ISET
= 39kΩ, T
A
= +25°C, unless otherwise noted.)
Note 1: All parameters tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
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 VIL of the SCL signal) in order to
bridge the undefined region of SCL’s falling edge.
Note 4: C
b
= total capacitance of one bus line in pF. t
R
and t
F
measured between 0.3V+ and 0.7V+.
Note 5: I
SINK
≤ 6mA. Cb = total capacitance of one bus line in pF. t
R
and t
F
measured between 0.3V+ and 0.7V+.
Note 6: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
(V
V+
= 2.5V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
OPERATING SUPPLY CURRENT vs. V+
(OUTPUTS UNLOADED)
MAX7300 toc03
V+ (V)
SUPPLY CURRENT ( mA)
5.04.54.03.53.02.5
1
0.1
2.0 5.5
ALL PORTS INPUT
(PULLUPS DISABLED)
ALL PORTS OUTPUT (0)
ALL PORTS OUTPUT (1)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX7300 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (A)
97.570.042.515.0-12.5
4
5
6
7
8
3
-40.0 125.0
V
V+
= 5.5V
V
V+
= 3.3V
V
V+
= 2.5V
OPERATING SUPPLY CURRENT
vs. TEMPERATURE
MAX7300 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
97.570.042.515.0-12.5
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
V+
= 2.5V TO 5.5V
NO LOAD
ALL PORTS
OUTPUT (1)
ALL PORTS
OUTPUT (0)
ALL PORTS INPUT HIGH
Maxim Integrated │ 4
www.maximintegrated.com
MAX7300 2-Wire-Interfaced, 2.5V to 5.5V,
20-Port or 28-Port I/O Expander
Typical Operating Characteristics
Timing Characteristics (Figure 2) (continued)