xr
XR17D154
REV. 1.2.0
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
DC ELECTRICAL CHARACTERISTICS FOR 3.3V PCI BUS INTERFACE (VIO = 3.0-3.6V, VCC = 3.0-5.5V)
TA=0o to 70oC (-40o to +85oC for industrial grade package).
SYMBOL
PARAMETER
MIN
MAX
UNITS
CONDITION
NOTES
VIL
Input Low Voltage
-0.5
0.3VIO
V
For PCI bus inputs
For Non-PCI bus inputs
VIL
VIH
Input Low Voltage
Input High Voltage
-0.5
0.8
V
0.5VIO VIO + 0.5
For PCI bus and external
clock inputs
VIH
Input High Voltage
Output Low Voltage
Output High Voltage
Output High Voltage
2.0
6
V
V
V
V
For non-PCI bus inputs
All outputs
VOL
VOH
VOH
0.4
IOL = 4mA
0.9VIO
2.0
IOH = -0.5mA
PCI bus outputs
IOH = -1mA
Non-PCI bus outputs
VCC = 3.0 - 3.6V
VOH
Output High Voltage
2.4
V
IOH = -2mA
Non-PCI bus outputs
VCC = 4.5 - 5.5V
IIL
Input Low Leakage Cur-
rent
-10
10
µA
µA
IIH
Input High Leakage Cur-
rent
ICL
Input Clock Leakage
Input Pin Capacitance
CLK Pin Capacitance
IDSEL Pin Capacitance
Power Supply Current
10
10
12
8
µA
pF
pF
pF
mA
CIN
CCLK
CIDSEL
ICC
5
PCI Bus CLK and
Ext. Clock=2MHz, all
inputs are at VCC or
GND and all outputs
are unloaded
2
VCC must equal VIO.
See Sleep Mode section
on page 19
ISLEEP
Sleep Current
20
µA
All four UARTs
asleep. AD[31:0] at
GND, all inputs at
VCC or GND
55
EXAR [ EXAR CORPORATION ]
