CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
2.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
Test Conditions: V
CC
= 3V, C
1
- C
4
= 0.22F; V
CC
= 3.15V to 5.5V, C
1
- C
4
= 0.1F, Unless Otherwise
Specified. Typicals are at T
A
= 25
o
C
TEST CONDITIONS
TEMP
(
o
C)
MIN
TYP
MAX
UNITS
PARAMETER
DC CHARACTERISTICS
Supply Current,
Powerdown Disabled
Supply Current, Powerdown
All Outputs Unloaded, V
CC
= 3.15V, SHDN = V
CC
SHDN = GND
25
25
-
-
0.3
1.0
1.0
10
mA
A
LOGIC AND TRANSMITTER INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold Low
Input Logic Threshold High
T
IN
, EN, SHDN, MBAUD
T
IN
, EN, SHDN,
MBAUD
V
CC
= 3.3V
V
CC
= 5.0V
Full
Full
Full
25
T
IN
, EN, SHDN, MBAUD
EN = V
CC
(Receivers Disabled)
I
OUT
= 1.6mA
I
OUT
= -1.0mA
Full
Full
Full
Full
-
2.0
2.4
-
-
-
-
-
-
-
0.5
0.01
0.05
-
0.8
-
-
-
1.0
10
0.4
-
V
V
V
V
A
A
V
V
Transmitter Input Hysteresis
Input Leakage Current
Output Leakage Current
Output Voltage Low
Output Voltage High
RECEIVER INPUTS
Input Voltage Range
Input Threshold Low
V
CC
= 3.3V
V
CC
= 5.0V
Input Threshold High
Input Hysteresis
Input Resistance
TRANSMITTER OUTPUTS
Output Voltage Swing
All Transmitter Outputs Loaded with 3k to Ground
V
CC
= 3.3V to 5.0V
V
CC
-0.6 V
CC
-0.1
Full
25
25
25
25
25
-25
0.6
0.8
-
-
3
-
1.2
1.5
1.6
0.3
5
25
-
-
2.4
-
7
V
V
V
V
V
k
Full
5.0
5.4
-
V
FN6003 Rev 3.00
October 21, 2005
Page 4 of 11
ICL3237
Electrical Specifications
Test Conditions: V
CC
= 3V, C
1
- C
4
= 0.22F; V
CC
= 3.15V to 5.5V, C
1
- C
4
= 0.1F, Unless Otherwise
Specified. Typicals are at T
A
= 25
o
C
(Continued)
TEST CONDITIONS
V
CC
= V+ = V- = 0V, Transmitter Output =
2V
TEMP
(
o
C)
Full
Full
V
OUT
=12V, V
CC
= 0V or 3V to 5.5V, SHDN = GND
Full
MIN
300
-
-
TYP
10M
35
-
MAX
-
60
25
UNITS
mA
A
PARAMETER
Output Resistance
Output Short-Circuit Current
Output Leakage Current
TIMING CHARACTERISTICS
Maximum Data Rate
R
L
= 3kOne
C
L
= 1000pF
Transmitter Switching
V
CC
= 3V to 4.5V,
C
L
= 250pF
V
CC
= 4.5V to 5.5V,
C
L
= 1000pF
MBAUD = GND
MBAUD = V
CC
MBAUD = V
CC
Full
Full
Full
25
25
25
25
250
1000
1000
-
-
-
-
-
-
-
6
24
4
700
1700
1100
0.15
0.15
200
200
100
25
50
17
40
12
-
-
-
-
-
-
-
kbps
kbps
kbps
s
s
ns
ns
ns
ns
Receiver Propagation Delay
Receiver Input to
Receiver Output,
C
L
= 150pF
Normal Operation
Normal Operation
t
PHL
- t
PLH
(Note 3)
t
PHL
t
PLH
Receiver Output Enable Time
Receiver Output Disable Time
Transmitter Skew
MBAUD = GND
MBAUD = V
CC
, V
CC
= 3.0V
25
25
25
25
25
25
Receiver Skew
Transition Region Slew Rate
t
PHL
- t
PLH
, C
L
= 150pF
C
L
= 150pF to 1000pF MBAUD = GND
V
CC
= 3.3V,
R
L
= 3kto 7k
MBAUD = V
CC
Measured From 3V to
-3V or -3V to 3V
C
L
= 150pF to 2500pF MBAUD = GND
-
30
150
30
ns
V/s
V/s
V/s
ESD PERFORMANCE
RS-232 Pins (T
OUT
, R
IN
)
Human Body Model
IEC61000-4-2 Contact Discharge
IEC61000-4-2 Air Gap Discharge
All Other Pins
NOTE:
3. Skew is measured at the input switching points (1.4V).
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