Technical specifications Electrical specifications
Digi XBee3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide 103
Electrical specifications
The following table provides the electrical specifications for the XBee Smart Modem.
Symbol Parameter Condition Min Typical Max Units
VCCMAX Maximum limits of VCC
line
0 4.3 V
VDD_IO Internal supply voltage
for I/O
(VCC - 0.15 V) or 3.3 V,
whichever is lower
VCC or 3.3 V, whichever is
lower
3.3 V
VI Other XBee pins -0.3 VDD_IO +
0.3
V
Voltage on XBee pin 6 (5
V tolerant)
-0.3 5.25 or VDD_IO+2,
whichever is lower
1
VIL Input low voltage 0.3*VDD_
IO
V
VIH Input high voltage 0.7*VDD_IO V
VOL Voltage output low Sinking 3 mA, VCC = 3.3 V 0.2*VDD_
IO
V
VOH Voltage output high Sourcing 3 mA, VCC = 3.3 V 0.8*VDD_IO V
I_IN Input leakage current High Z state I/O connected to
Ground or VDD_IO
0.1 30 nA
RPU Internal pull-up resistor Enabled 40 kΩ
RPD Internal pull-down
resistor
Enabled 40 kΩ
1
Pin 6 is 5 V tolerant even when the XBee Smart Modem is not powered. We recommend only driving this pin with 3.3 V for compatibility with other XBee products.
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