Datasheet

(V
V+
= 2.5V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
(Typical Operating Circuit, V
V+
= 2.5V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Serial Clock Frequency f
SCL
400 kHz
Bus Free Time Between a STOP
and a START Condition
t
BUF
1.3 µs
Hold Time (Repeated) START
Condition
t
HD, STA
0.6 µs
Repeated START Condition
Setup Time
t
SU, STA
0.6 µs
STOP Condition Setup Time t
SU, STO
0.6 µs
Data Hold Time t
HD, DAT
(Note 3) 15 900 ns
Data Setup Time t
SU, DAT
100 ns
SCL Clock Low Period t
LOW
1.3 µs
SCL Clock High Period t
HIGH
0.7 µs
Rise Time of Both SDA and SCL
Signals, Receiving
t
R
(Notes 2, 4)
20 +
0.1C
b
300 ns
Fall Time of Both SDA and SCL
Signals, Receiving
t
F
(Notes 2, 4)
20 +
0.1C
b
300 ns
Fall Time of SDA Transmitting t
F,TX
(Notes 2, 5)
20 +
0.1C
b
250 ns
Pulse Width of Spike Suppressed t
SP
(Notes 2, 6) 0 50 ns
Capacitive Load for Each Bus
Line
C
b
(Note 2) 400 pF
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output High Voltage V
OH
GPIO outputs, I
SOURCE
= 2mA,
T
A
= -40°C to +85°C
V+ -
0.7
V
GPIO outputs, I
SOURCE
= 1mA,
T
A
= T
MIN
to T
MAX
(Note 2)
V+ -
0.7
Port Sink Current I
OL
V
PORT
= 0.6V 2 10 18 mA
Output Short-Circuit Current I
OLSC
Port configured output low, shorted to V+ 2.75 11 20 mA
Input High-Voltage SDA, SCL,
AD0, AD1
V
IH
0.7 x
V+
V
Input Low-Voltage SDA, SCL,
AD0, AD1
V
IL
0.3 x
V+
V
Input Leakage Current SDA, SCL I
IH
, I
IL
-50 +50 nA
Input Capacitance (Note 2) 10 pF
Output Low-Voltage SDA V
OL
I
SINK
= 6mA 0.4 V
www.maximintegrated.com
Maxim Integrated │ 3
MAX7300 2-Wire-Interfaced, 2.5V to 5.5V,
20-Port or 28-Port I/O Expander
Timing Characteristics (Figure 2)
Electrical Characteristics (continued)