MAX7300 Maxim, MAX7300 Datasheet - Page 4

• Manufacturer Part Number: MAX7300
• Description: The MAX7300 compact, serial-interfaced, I/O expansion peripheral provides microprocessors with up to 28 ports
• Manufacturer: Maxim

TIMING CHARACTERISTICS (Figure 2) (continued)
(V
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
28-Port I/O Expander
Note 1: All parameters tested at T
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 V
Note 4: C
Note 5: I
Note 6: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
4
(R
__________________________________________Typical Operating Characteristics
V+
ISET
0.40
0.36
0.32
0.28
0.24
0.20
0.16
0.12
0.08
0.04
_______________________________________________________________________________________
= 2.5V to 5.5V, T
0
= 39kΩ, T
-40.0
bridge the undefined region of SCL’s falling edge.
SINK
V
NO LOAD
b
V+
ALL PORTS
OUTPUT (1)
= total capacitance of one bus line in pF. t
OPERATING SUPPLY CURRENT
= 2.5V TO 5.5V
-12.5
≤ 6mA. C
A
vs. TEMPERATURE
15.0
TEMPERATURE (°C)
= +25°C, unless otherwise noted.)
ALL PORTS INPUT HIGH
A
= T
b
42.5
= total capacitance of one bus line in pF. t
ALL PORTS
OUTPUT (0)
MIN
70.0
to T
A
MAX
97.5
= +25°C. Specifications over temperature are guaranteed by design.
, unless otherwise noted.) (Note 1)
125.0
8
7
6
5
4
3
-40.0
R
and t
V
V+
SHUTDOWN SUPPLY CURRENT
-12.5
= 3.3V
F
vs. TEMPERATURE
measured between 0.3V+ and 0.7V+.
15.0
TEMPERATURE (°C)
V
R
V+
42.5
and t
= 5.5V
F
V
70.0
V+
measured between 0.3V+ and 0.7V+.
= 2.5V
97.5
125.0
0.1
1
2.0
OPERATING SUPPLY CURRENT vs. V+
IL
ALL PORTS OUTPUT (1)
of the SCL signal) in order to
2.5
(OUTPUTS UNLOADED)
3.0
3.5
V+ (V)
ALL PORTS OUTPUT (0)
(PULLUPS DISABLED)
ALL PORTS INPUT
4.0
4.5
5.0
5.5