XR21B1424_17 Datasheet, PDF (2/64 Pages) Exar Corporation – Enhanced 4-Ch Full-Speed USB UART

XR21B1424
Absolute Maximum Ratings
Stresses beyond the limits listed below may cause perma-
nent damage to the device. Exposure to any Absolute Max-
imum Rating condition for extended periods may affect
device reliability and lifetime.
Supply Voltage (VCC_REG)......................................+5.75V
Supply Voltage (VCC, VIO)............................................+4V
Input Voltage (VBUS_SENSE).......................-0.3 to +5.75V
Input Voltage (All other pins)............................-0.3 to +5.6V
Junction Temperature.................................................125°C
Operating Conditions
Operating Temperature Range.....................-40°C to +85°C
Electrical Characteristics
Unless otherwise noted: T_A = -40°C to +85°C, VCC_REG = +4.4V to +5.25V or +3.0V to +3.6V, VIO = +1.8V to +3.6V.
Symbol
Parameter
Power
I_CC
I_SUSP
V_OUT
Power Supply Current
Lowpower Mode Current
Regulated Output Voltage (VCC pin)
UART, USB_STAT and GPIO Pins
V_IL
Input Low Voltage
Conditions
VCC_REG = +4.4V to +5.25V
VCC_REG = +4.4V to +5.25V.
Maximum output current = 200 mA including
the supply current of the XR21B1424.
V_IH
Input High Voltage
V_OL
Output Low Voltage
V_OH
Output High Voltage
I_IL
Input Low Leakage Current
I_IH
Input High Leakage Current
C_IN
Input Pin Capacitance
IOL = 1mA, VIO = +1.6V
IOL = 4mA, VIO = +3.6V
IOH = -400uA, VIO = +1.6V
IOH = -1.5mA, VIO = +3.6V
VIO = +3V to +3.6V, VCC_REG = +4.4V to
+5.25V, V_INPUT = 0V
VIO = +3V to +3.6V, VCC_REG = +4.4V to
+5.25V, V_INPUT = +3.3V
VIO = +3V to +3.6V, VCC_REG = +4.4V to
+5.25V, V_INPUT = +5.5V
Min
Typ
Max
Units
15
23
mA
0.85
1.25
mA
3
3.3
3.6
V
-0.3
0.70*
VIO
1.3
2.8
0.25*
V
VIO
5.5
V
0.3
V
0.5
V
VIO
V
VIO
V
±10
μA
±10
μA
±120
μA
5
pF
2 / 64
exar.com/XR21B1424
Rev 1C