DC and AC parameters CRX14
36/47 Doc ID 8880 Rev 4
9 DC and AC parameters
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device. The parameters in the DC and AC Characteristic tables that
follow are derived from tests performed under the Measurement Conditions summarized in
the relevant tables. Designers should check that the operating conditions in their circuit
match the measurement conditions when relying on the quoted parameters.
Figure 33. I²C AC testing I/O waveform
1. Sampled only, not 100% tested.
2. T
A
= 25 °C, f = 400kHz.
Table 9. I²C AC measurement conditions
Parameter Min. Max. Unit
V
CC
Supply Voltage
4.5 5.5 V
Ambient Operating Temperature (T
A
)
–20 85 °C
Input Rise and Fall Times 50 ns
Input Pulse Voltages
0.2V
CC
0.8V
CC
V
Input and Output Timing Reference Voltages
0.3V
CC
0.7V
CC
V
AI09235
0.8V
CC
0.2V
CC
0.7V
CC
0.3V
CC
Table 10. I²C input parameters
(1,2)
Symbol Parameter Min. Max. Unit
C
IN
Input Capacitance (SDA) 8 pF
C
IN
Input Capacitance (SCL, E0, E1, E2)) 6 pF
t
NS
Low Pass Filter Input Time Constant (SCL & SDA Inputs) 100 400 ns
Table 11. I²C DC characteristics
Symbol Parameter Test condition Min. Max. Unit
I
LI
Input Leakage Current
(SCL, SDA, E0, E1, E2)
0V V
IN
V
CC
±2 µA
I
LO
Output Leakage Current
(SCL, SDA, E0, E1, E2)
0V V
OUT
V
CC
,
SDA in Hi-Z
±2 µA
