ST5481
10 - ELECTRICAL SPECIFICATIONS
Unless otherwise stated, electrical characteristics are specified over the operating range.
Typical values are given for VBUS = +5V, VregA = 3.3V, VregD1 = VregD2 = 3.3V, Tamb = 25°C
10.1 - Absolute Maximum Rating
Table 4 : Absolute maximum ratings
Symbol
VBUS
VREGD1
VREGD2
VREGA
VIA
VID
VID
Toper
Tstg
Parameter
5V Power Supply Voltage
3.3V Power Supply Voltage 1
3.3V Power Supply Voltage 1
3.3V Power Supply Voltage 1
Analog Input Voltage 2
Digital Input Voltage
Digital Input Voltage on RPSM
Operating Temperature
Storage Temperature
Value
5.5V
-0.3V to 3.6V
-0.3V to 3.6V
-0.3V to 3.6V
-0.3 to VREGA + 0.3V
-0.3 to VREGDX + 0.3V
-0.5 to VBUS + 0.3V
0, +70
-55, +125 °C
Unit
V
V
V
V
V
V
V
°C
°C
Notes GNDA = GNDD1 = GNDD2 = GNDBUS = 0V
Warning : Operation beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these
extremes.
1. In Remote Power Supply Mode (RPSM=0)
2. For the ISDN S side access “LOP,LON,LIP,LIN” pins the voltage level can temporary exceed the maximum rating due to the phone
line conditions. To prevent any damage to the circuit, an external protection circuit must be implemented according to the application
schematics.
10.2 - Nominal DC Characteristics
(Ta = 0 to 70°C unless otherwise specified)
Table 5 : Nominal DC characteristics
Symbol
VBUS
Ivdd
Ivdds
VREGA
VREGD1
VREGD2
IVregA
IVregD1
IVregD2
PDLP
PD
Parameter
Supply voltage
Supply Current (RPSM=1)
Supply Current in Suspended Mode (RPSM=1)
Analog regulated OUTPUT power supply (RPSM=1)
Analog regulated INPUT power supply (RPSM=0)
Digital regulated OUTPUT power supply (RPSM=1)
Digital regulated INPUT power supply (RPSM=0)
Digital regulated INPUT power supply 1
Analog regulated OUTPUT current (RPSM=1)
Analog regulated INPUT current (RPSM=0)
Digital regulated OUTPUT current (RPSM=1)
Digital regulated INPUT current (RPSM=0)
Digital regulated INPUT current 1
Low Power mode (Suspended mode)
Operating Power
Minimum Typical Maximum Unit
4
3.3-5%
5
TBD
3.3
5.25
V
TBD
mA
TBD
mA
3.3+5%
V
3.3-5%
3.3
3.3+5%
V
3.3-5%
3.3
TBD
3.3+5%
V
40
mA
TBD
TBD
TBD
40
mA
TBD
mA
mW
mW
Note 1. VREGD2 is always an analog power input, to be connected to VREGD1
12/18