MAX7300(2003) Просмотр технического описания (PDF) - Maxim Integrated
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MAX7300 Datasheet PDF : 22 Pages
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2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
28-Port I/O Expander
ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit, V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output High Voltage
Port Sink Current
Output Short-Circuit Current
Input High-Voltage SDA, SCL,
AD0, AD1
GPIO outputs, ISOURCE = 2mA,
V+ -
TA = -40°C to +85°C
0.7
VOH
V
GPIO outputs, ISOURCE = 1mA,
V+ -
TA = TMIN to TMAX (Note 2)
0.7
IOL
IOLSC
VPORT = 0.6V
Port configured output low, shorted to V+
2
10
18
mA
2.75
11
20
mA
VIH
0.7 x
V
V+
Input Low-Voltage SDA, SCL,
AD0, AD1
VIL
0.3 x
V+
V
Input Leakage Current SDA, SCL
Input Capacitance
Output Low-Voltage SDA
IIH, IIL
VOL
(Note 2)
ISINK = 6mA
-50
+50
nA
10
pF
0.4
V
TIMING CHARACTERISTICS (Figure 2)
(V+ = 2.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)
PARAMETER
Serial Clock Frequency
Bus Free Time Between a STOP
and a START Condition
Hold Time (Repeated) START
Condition
Repeated START Condition
Setup Time
STOP Condition Setup Time
Data Hold Time
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Rise Time of Both SDA and SCL
Signals, Receiving
Fall Time of Both SDA and SCL
Signals, Receiving
SYMBOL
fSCL
tBUF
tHD, STA
tSU, STA
tSU, STO
tHD, DAT
tSU, DAT
tLOW
tHIGH
(Note 3)
tR
(Notes 2, 4)
tF
(Notes 2, 4)
CONDITIONS
Fall Time of SDA Transmitting
Pulse Width of Spike Suppressed
Capacitive Load for Each Bus
Line
tF,TX
tSP
Cb
(Notes 2, 5)
(Notes 2, 6)
(Note 2)
MIN TYP MAX UNITS
400
kHz
1.3
µs
0.6
µs
0.6
µs
0.6
µs
15
900
ns
100
ns
1.3
µs
0.7
µs
20 +
300
ns
0.1Cb
20 +
0.1Cb
300
ns
20 +
250
ns
0.1Cb
0
50
ns
400
pF
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