MAX6956 Maxim, MAX6956 Datasheet - Page 3

• Manufacturer Part Number: MAX6956
• Description: 2-Wire-Interfaced / 2.5V to 5.5V / 20-Port or 28-Port LED Display Driver and I/O Expander
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit, V+ = 2.5V to 5.5V, T
TIMING CHARACTERISTICS (Figure 2)
(V+ = 2.5V to 5.5V, T
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.
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
Fall Time of SDA Transmitting
Pulse Width of Spike Suppressed
Capacitive Load for Each Bus
Line
Port Drive LED Sink Current,
Port Configured as LED Driver
Port Drive Logic Sink Current,
Port Configured as LED Driver
Input High-Voltage SDA, SCL,
AD0, AD1
Input Low-Voltage SDA, SCL,
AD0, AD1
Input Leakage Current SDA, SCL
Input Capacitance
Output Low-Voltage SDA
bridge the undefined region of SCL’s falling edge.
SINK
28-Port LED Display Driver and I/O Expander
b
PARAMETER
PARAMETER
= total capacitance of one bus line in pF. t
≤ 6mA. C
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
A
_______________________________________________________________________________________
= T
b
= total capacitance of one bus line in pF. t
MIN
to T
MAX
A
= +25°C. Specifications over temperature are guaranteed by design.
SYMBOL
I
SYMBOL
DIGIT_SC
, unless otherwise noted.) (Note 1)
t
t
t
t
t
HD, STA
SU, STO
HD, DAT
SU, DAT
I
SU, STA
I
IH
t
DIGIT
t
V
t
t
V
f
HIGH
V
LOW
BUF
F
SCL
t
C
OL
t
, I
t
SP
IH
IL
,
R
F
TX
b
IL
A
V+ = 2.5V, V
current
V+ = 3.3V, V
current (Note 2)
V+ = 5.5V, V
current
V+ = 2.5V, V
current
V+ = 5.5V, V
current
(Note 2)
I
= T
SINK
(Note 3)
(Notes 2, 4)
(Notes 2, 4)
(Notes 2, 5)
(Notes 2, 6)
(Note 2)
MIN
= 6mA
R
and t
to T
MAX
LED
LED
LED
OUT
OUT
F
measured between 0.3V+ and 0.7V+.
, unless otherwise noted.) (Note 1)
CONDITIONS
CONDITIONS
= 2.3V at maximum LED
= 2.4V at maximum LED
= 2.4V at maximum LED
= 0.6V at maximum sink
= 0.6V at maximum sink
R
and t
F
measured between 0.3V+ and 0.7V+.
MIN
0.7
100
18.5
18.5
MIN
1.3
0.6
0.6
0.6
1.3
0.7
15
9.5
-50
V+
19
19
0
IL
✕
of the SCL signal) in order to
0.1C
0.1C
0.1C
20 +
20 +
20 +
TYP
TYP
13.5
24
25
23
24
b
b
b
MAX
MAX
0.3
400
900
300
300
250
400
27.5
50
V+
0.4
18
30
28
28
50
10
✕
UNITS
UNITS
kHz
pF
mA
mA
µs
µs
µs
µs
ns
ns
µs
µs
ns
ns
ns
ns
nA
pF
V
V
V
3