Datasheet

11Maxim Integrated
Quad Serial UART with 128-Word FIFOs
MAX14830
AC ELECTRICAL CHARACTERISTICS (continued)
(V
A
= +2.35V to +3.6V, V
L
= +1.71V to +3.6V, V
EXT
= +1.71V to +3.6V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values
are at V
A
= +2.8V, V
L
= +1.8V, V
EXT
= +2.5V, T
A
= +25NC.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
I
2
C BUS: TIMING CHARACTERISTICS (SEE FIGURE 1)
SCL Clock Frequency f
SCL
Standard mode 100
kHzFast mode 400
Fast mode plus 1000
Bus Free Time Between a STOP
and START Condition
t
BUF
Standard mode 4.7
Fs
Fast mode 1.3
Fast mode plus 0.5
Hold Time for START Condition
and Repeated START Condition
t
HD:STA
Standard mode 4.0
Fs
Fast mode 0.6
Fast mode plus 0.26
Low Period of the SCL Clock t
LOW
Standard mode 4.7
Fs
Fast mode 1.3
Fast mode plus 0.5
High Period of the SCL Clock t
HIGH
Standard mode 4.0
Fs
Fast mode 0.6
Fast mode plus 0.26
Data Hold Time t
HD:DAT
Standard mode 0 0.9
Fs
Fast mode 0 0.9
Fast mode plus 0
Data Setup Time t
SU:DAT
Standard mode 250
nsFast mode 100
Fast mode plus 50
Setup Time for Repeated START
Condition
t
SU:STA
Standard mode 4.7
Fs
Fast mode 0.6
Fast mode plus 0.26
Rise Time of SDA and SCL
Signals Receiving
t
R
Standard mode (0.3 x V
L
to 0.7 x V
L
)
(Note 6)
20 +
0.1C
b
1000
ns
Fast mode (0.3 x V
L
to 0.7 x V
L
) (Note 6)
20 +
0.1C
b
300
Fast mode plus 120
Fall Time of SDA and SCL
Signals
t
F
Standard mode (0.7 x V
L
to 0.3 x V
L
)
(Note 6)
20 +
0.1C
b
300
ns
Fast mode (0.7 x V
L
to 0.3 x V
L
) (Note 6)
20 +
0.1C
b
300
Fast mode plus 120
Setup Time for STOP Condition t
SU:STO
Standard mode 4.7
Fs
Fast mode 0.6
Fast mode plus 0.26
Capacitive Load for SDA and
SCL (Note 4)
C
b
Standard mode 400
pFFast mode 400
Fast mode plus 550