EVAL-ADM1275EBZ Datasheet, PDF (7/48 Pages) Analog Devices – Hot-Swap Controller and Digital Power

Data Sheet
ADM1275
SERIAL BUS TIMING CHARACTERISTICS
tR = (VIL(MAX) – 0.15) to (VIH3V3 + 0.15) and tF = 0.9VDD to (VIL(MAX) – 0.15); where VIH3V3 = 2.1 V and VDD = 3.3 V.
Table 2.
Parameter
fSCLK
tBUF
Description
Clock frequency
Bus free time
tHD;STA
tSU;STA
tSU;STO
tHD;DAT
tSU;DAT
tLOW
tHIGH
tR
tF
Start hold time
Start setup time
Stop setup time
SDA hold time
SDA setup time
SCL low time
SCL high time
SCL, SDA rise time
SCL, SDA fall time
Min
Typ Max Unit Test Conditions/Comments
400 kHz
1.3
µs
Following the stop condition of a read transaction
4.7
µs
Following the stop condition of a write transaction
0.6
µs
0.6
µs
0.6
µs
300
900 ns
100
ns
1.3
µs
0.6
µs
20
300 ns
20
300 ns
Timing Diagram
SCL
V_IH
V_IL
V_IH
SDA _VIL
t_BUF
P
S
t_LOW
t_R
t_F
t_HD;DAT
t_HD;STA
t_HIGH
t_SU;STA
t_SU;DAT
S
Figure 2. Serial Bus Timing Diagram
t_SU;STO
P
Rev. D | Page 7 of 48