UB482 User Manual
8
Pin
Signal
I/O
Description
Notes
23
PPS
O
Pulse per second
24
RSV
-
Reserved
25
TPO+
O
Positive electrode of Ethernet
sending data, Differential pair.
Connect to TD+
26
TPI+
I
Positive electrode of Ethernet
receiving data, Differential
pair
Connect to RD+
27
TPO-
O
Negative electrode of
Ethernet sending data,
Differential pair
Connect to TD-
28
TPI-
I
Negative electrode of
Ethernet receiving data,
Differential pair
Connect to RD-
2.4
Electrical Specifications
Table 2-3
Absolute Maximum Rating
Item
Pin
Min
Max
Unit
Power Supply (VCC)
Vcc
-0.3
5.5
V
Voltage Input
Vin
-0.3
3.6
V
VCC Ripple (Rated Max.)
Vrpp
0
50
mV
Voltage Input (pins other than RXD1,
RXD2, RXD3)
Vin
-0.3
3.6
V
RF Input Power Consumption of
master antenna
ANT1_IN input power
+15
dBm
RF Input Power Consumption of
slave antenna
ANT2_IN input power
+15
dBm
Maximum ESD stress
VESD (HBM)
±2000
V
2.5
Operational Conditions
Table 2-4 Operational Conditions
Item
Pin
Min
Typical
Max
Unit
Condition
Power Supply (VCC)
Vcc
3.3
3.3
5.0
V
Inrush Current
2
Iccp
10
A
Vcc = 3.3 V
LOW Level Input Voltage
Vin_low_1
-0.3
0.9
V
High Level Input Voltage
Vin_high_1
2.4
3.6
V
2
Since the product contains capacitors at the input , inrush current will occur during power-on. Evaluate in the
actual environment in order to check the effect of the supply voltage drop due to the inrush current.
