Murata MEMS Evaluation
Unit User Manual
Murata Electronics Oy
Subject to changes
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www.murata.com
Doc.Nr. 82175700
Rev.D
9.3.2 Digital IO
The digital IO uses SN74LVC1T45; Table 4 below shows a short reference of its specification.
For more details please refer to the SN74LVC1T45 product specification. For I2C the pull up
resistor is 3.3 kOhm and level shift is done to support 2.5V and 3.3V supply voltages. The full
range of I2C is from 1.8V to 3.6V.
Table 4. SN74LVC1T45 electrical characteristics
DVIO
MIN
MAX
UNIT
V
IH
High-level input
voltage
1.65 V to 1.95 V
DVIO x 0.65
V
2.3 V to 2.7 V
1.7
3 V to 3.6 V
2
4.5V to 5.5V
DVIO x 0.7
V
IL
Low-level input
voltage
1.65 V to 1.95 V
DVIO x 0.35
V
2.3 V to 2.7 V
0.7
3 V to 3.6 V
0.8
4.5V to 5.5V
DVIO x 0.3
V
OH
High-level output
voltage
1.2 to 4.5V, I
OH =
-100uA
DVIO x 0.65
V
3V, I
OH =
-24mA
2.4
V
OL
Low-level output
voltage
1.2 to 4.5V, I
OH =
-100uA
0.1
V
3V, I
OH =
-24mA
0.55
