MAX6958 Maxim, MAX6958 Datasheet - Page 3

• Manufacturer Part Number: MAX6958
• Description: 2-Wire Interfaced / 3V to 5.5V / 4-Digit / 9-Segment LED Display Drivers with Keyscan
• Manufacturer: Maxim

DC ELECTRICAL CHARACTERISTICS (continued)
(V+ = 3V to 5.5V, T
TIMING CHARACTERISTICS
(V+ = 3V 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 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
Pullup to V+ INPUT1, INPUT2
IRQ/SEG9, SDA Output Low
Voltage
SDA Output Low Voltage
9-Segment LED Display Drivers with Keyscan
bridge the undefined region of SCL’s falling edge.
SINK
PARAMETER
PARAMETER
B
= total capacitance of one bus line in pF. t
≤ 6mA. C
A
A
= T
= T
_______________________________________________________________________________________
MIN
MIN
B
= total capacitance of one bus line in pF. t
to T
to T
2-Wire Interfaced, 3V to 5.5V, 4-Digit,
MAX
MAX
A
, unless otherwise noted. Typical values are at V+ = 5V, T
, Figure 1, unless otherwise noted.) (Note 1)
=+25°C. Specifications over temperature are guaranteed by design.
SYMBOL
SYMBOL
V
t
t
t
t
I
t
HD, STA
SU, STO
HD, DAT
SU, DAT
PULLUP
SU, STA
V
OL(SDA)
t
t
t
f
HIGH
LOW
OLBK
BUF
SCL
t
C
t
t
t
SP
R
F
F
B
I
I
I
(Note 3)
(Notes 2, 4)
(Notes 2, 4)
(Notes 2, 5)
(Note 6)
SINK
SINK
SINK
R
= 6mA, T
= 4mA, T
= 6mA
and t
F
measured between 0.3V+ and 0.7V+.
A
A
CONDITIONS
CONDITIONS
= -40°C to +85°C
= T
R
MIN
and t
to T
F
measured between 0.3V+ and 0.7V+.
MAX
A
= +25°C.) (Note 1)
MIN
MIN
100
1.3
0.6
0.6
0.6
1.3
0.6
IL
of the SCL signal) in order to
0.1C
0.1C
0.1C
20 +
20 +
20 +
TYP
26.5
TYP
400
50
B
B
B
MAX
MAX
400
300
300
250
0.4
0.4
0.4
0.9
UNITS
UNITS
kHz
pF
µA
µs
µs
µs
µs
µs
ns
µs
µs
ns
ns
ns
ns
V
V
3