XR16L580 Exar Corporation, XR16L580 Datasheet - Page 35

• Manufacturer Part Number: XR16L580
• Description: Smallest 2.25 to 5.5V Uart With 16-Byte Fifo And Power-save
• Manufacturer: Exar Corporation

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REV. 1.2.0
DC ELECTRICAL CHARACTERISTICS
U
Test 1A: For 48-TQFP package only: The 16/68# pin has an internal pull-up resistor, so the input leakage
current is -80uA max.
Test 1B: For 48-TQFP package only: The PwrSave pin has an internal pull-down resistor, so the input leakage
current is 80uA max.
Test 2: The following inputs must remain steady at VCC or GND state to minimize sleep current: A0-A2, D0-
D7, IOR#, IOW# (R/W#), CS# and all modem inputs. Also, RXA and RXB inputs must idle at logic 1 state while
asleep. Floating inputs may result in sleep currents in the mA range. The 48-TQFP package has a higher
current because of the internal pull-up and pull-down resistors on the 16/68# and PwrSave pins respectively.
For Power-Save, the UART internally isolates all of these inputs (except the modem inputs, 16/68# and Reset
pins) therefore eliminating any unnecessary external buffers to keep the inputs steady.
Feature” on page 18.
be lower than its VCC supply.
S
NLESS OTHERWISE NOTED
I
I
I
I
I
I
PWRSV
PWRSV
PWRSV
V
SLEEP
SLEEP
SLEEP
V
YMBOL
V
V
C
V
I
IHCK
V
ILCK
I
I
CC
OH
OL
IH
IL
IH
IL
IN
/
/
/
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
Sleep / Power-Save Current
(16 mode, 48-TQFP Package)
Sleep / Power-Save Current
(68 mode, 48-TQFP Package)
(16 and 68 modes,
32-QFN Package)
P
ARAMETER
To achieve minimum power drain, the voltage at any of the inputs of the L580 should NOT
: TA=0
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
O
TO
70
O
C (-40
M
-0.3
-0.3
1.8
1.8
1.8
IN
L
2.5V
IMITS
O
TO
VCC
±10
±10
130
M
0.6
0.5
5.5
0.4
65
5
1
6
+85
AX
35
O
C
M
-0.3
-0.3
2.4
2.0
2.0
IN
FOR INDUSTRIAL GRADE PACKAGE
L
3.3V
IMITS
VCC
±10
±10
180
M
0.6
0.8
5.5
0.4
15
90
5
2
AX
M
-0.5
-0.5
3.0
2.2
2.4
IN
L
5.0V
IMITS
VCC
±10
±10
150
300
0.6
0.8
5.5
0.4
M
30
5
3
AX
U
mA
uA
uA
pF
uA
uA
uA
NITS
V
V
V
V
V
V
V
V
V
V
), V
See “Power-Save
I
I
I
I
I
I
See Test 1A
See Test 1B
See Test 2
See Test 2
See Test 2
CC
OL
OL
OL
OH
OH
OH
C
ONDITIONS
=2.25- 5.5V
XR16L580
= 6 mA
= 4 mA
= 2 mA
= -6 mA
= -1 mA
= -400 uA