xr88c681 Exar Corporation, xr88c681 Datasheet - Page 8

• Manufacturer Part Number: xr88c681
• Description: Cmos Dual Channel Uart Duart
• Manufacturer: Exar Corporation

DC ELECTRICAL CHARACTERISTICS
Test Conditions: T
Notes
1.
2.
3.
4.
Parameters are valid over the specified temperature and operating supply ranges. Typical values are 25°C, V
processing parameters.
All voltages are referenced to ground (GND). For testing, input signal levels are 0.4V and 2.4V with a transition time of 20ns
maximum. All time measurements are referenced at input voltages of 0.8V and 2.0V as appropriate. See Figure 50.
For prime grade N, P, J, L, M, ML, V
Measured operating with a 3.6864MHz crystal and with all outputs open.
Symbol
V
I
ILSEL
I
Rev. 2.11
V
I
V
I
I
I
I
V
V
I
CCA
V
X2H
IHX1
X1L
X2L
I
XIH
CCS
I
OC
LL
OH
OL
IL
IH
IH
IL
Input Low Voltage
Input High Voltage
Input High Voltage (Military)
Input High Voltage (X1/CLK)
Output Low Voltage
Output High Voltage
Input Leakage Current
Select Pin Leakage Current
X1 Input Low Current
X2 Input Low Current
X1 Input High Current
X2 Input High Current
Data Bus Tri-State Leakage
Current
Open Drain Output Leakage
Current
Power Supply Current
Power Supply Current
A
= 0 - 70°C, V
Parameter
4
4
CC
CC
= 5V + 10%.
= 5V ¦ 5% unless otherwise specified.
1, 2, 3
Min.
0.5
2.0
2.2
4.0
2.4
-25
-30
-10
-10
Typ.
-20
20
20
-7
8
6
3
Max.
V
V
+30
0.8
0.4
25
10
10
15
10
CC
CC
Unit
mA
mA
mA
V
V
V
V
V
V
A
A
A
A
A
A
A
Conditions
T
I
I
V
V
V
V
V
V
V
Active Mode
Standby Mode
OL
OH
A
IN
IN
IN
IN
IN
O
O
= -55°C to 125°C
= 2.4mA
= 0 to V
= 0 to V
= -400 A
= 0 to V
= 0 to V
= 0
= V
= V
CC
CC
CC
CC
CC
CC
CC
= 5V and typical