XR16L570 Exar Corporation, XR16L570 Datasheet - Page 34

• Manufacturer Part Number: XR16L570
• Description: SMALLEST 1.62V TO 5.5V UART
• Manufacturer: Exar Corporation

XR16L570
SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
DC ELECTRICAL CHARACTERISTICS
U
DC ELECTRICAL CHARACTERISTICS
U
Test: The following inputs must remain steady at VCC or GND state to minimize sleep current: A0-A2, D0-D7, IOR#, IOW#,
CS# and all modem inputs. Also, RX input must idle at logic 1 state while asleep. Floating inputs may result in sleep
currents in the mA range.
For PowerSave, the UART internally isolates all of these inputs (except the modem input CTS# and Reset pins) therefore
eliminating any unnecessary external buffers to keep the inputs steady.
achieve minimum power drain, the voltage at any of the inputs of the L570 should NOT be lower than its VCC supply.
NLESS OTHERWISE NOTED
NLESS OTHERWISE NOTED
I
I
SLEEP
SLEEP
S
S
V
V
V
V
YMBOL
YMBOL
V
V
V
C
V
V
I
C
IHCK
V
V
I
ILCK
IHCK
V
I
ILCK
I
CC
I
I
CC
/I
OH
IH
/I
OL
IL
OH
IH
OL
IL
IH
IN
IL
IH
IN
IL
PWRSV
PWRSV
Clock Input Low Level
Clock Input High Level
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Input Low Leakage Current
Input High Leakage Current
Input Pin Capacitance
Power Supply Current
Sleep / Power-Save Current
Clock Input Low Level
Clock Input High Level
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Input Low Leakage Current
Input High Leakage Current
Input Pin Capacitance
Power Supply Current
Sleep Current
: TA= -40
: TA= -40
P
P
ARAMETER
ARAMETER
O
O
TO
TO
+85
+85
O
O
C, V
C, V
CC
CC
=2.97 - 5.5V
=1.62 - 2.75V
34
M
M
-0.3
-0.3
-0.3
-0.3
2.4
2.0
2.0
1.4
1.4
1.4
IN
IN
L
L
3.3V
1.8V
IMITS
IMITS
SEE”POWER-SAVE FEATURE” ON PAGE 17.
VCC
VCC
±10
±10
±10
±10
M
M
0.6
0.8
5.5
0.4
0.3
0.2
5.5
0.4
0.5
15
5
2
5
3
AX
AX
M
M
-0.5
-0.5
-0.3
-0.3
3.0
2.2
2.4
1.8
1.8
1.8
IN
IN
L
L
5.0V
2.5V
IMITS
IMITS
VCC
VCC
±10
±10
±10
±10
M
M
0.6
0.8
5.5
0.4
0.6
0.5
5.5
0.4
30
5
3
5
1
6
AX
AX
U
U
mA
mA
uA
uA
pF
uA
uA
uA
pF
uA
NITS
NITS
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
xr
I
I
I
I
See Test
I
I
I
I
See Test
OL
OL
OH
OH
OL
OL
OH
OH
C
C
ONDITIONS
ONDITIONS
= 6 mA
= 4 mA
= 2 mA
= 1.5 mA
= -6 mA
= -1 mA
= -400 uA
= -200 uA
REV. 1.0.0
To