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:
1.
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 to 5.5V, C
1
- C
4
= 0.1F; Unless Otherwise Specified.
Typicals are at T
A
= 25°C
TEST CONDITIONS
All R
IN
Open (ICL3217 Only)
All Outputs Unloaded
TEMP
(°C)
25
25
MIN
-
-
TYP
1.0
0.3
MAX
10
1.0
UNITS
A
mA
PARAMETER
DC CHARACTERISTICS
Supply Current, Automatic
Powerdown
Supply Current,
Automatic Powerdown Disabled
Input Logic Threshold Low
Input Logic Threshold High
Input Leakage Current
Output Leakage Current
(ICL3217 Only)
Output Voltage Low
Output Voltage High
Receiver Input Thresholds to
Enable Transmitters
Receiver Input Thresholds to
Disable Transmitters
Receiver Threshold to Transmitters
Enabled Delay (t
WU
)
Receiver Positive or Negative
Threshold to Transmitters
Disabled Delay
RECEIVER INPUTS
Input Voltage Range
Input Threshold Low
Input Threshold High
V
CC
= 3.3V
V
CC
= 5.0V
V
CC
= 3.3V
V
CC
= 5.0V
I
OUT
= 1.6mA
I
OUT
= -1.0mA
TRANSMITTER INPUTS AND RECEIVER OUTPUTS
T
IN
T
IN
T
IN
V
CC
= 3.3V
V
CC
= 5.0V
Full
Full
Full
Full
Full
Full
Full
Full
Full
25
25
-
2.0
2.4
-
-
-
-
-
-
0.01
0.05
-
0.8
-
-
1.0
10
0.4
-
2.7
0.3
-
-
V
V
V
A
A
V
V
V
V
s
s
V
CC
-0.6 V
CC
-0.1
-2.7
-0.3
-
-
-
-
100
30
AUTOMATIC POWERDOWN
(ICL3217 Only)
ICL3217 Powers Up (Figure 4)
ICL3217 Powers Down (Figure 4)
Full
25
25
25
25
-25
0.6
0.8
-
-
-
1.2
1.5
1.5
1.8
25
-
-
2.4
2.4
V
V
V
V
V
FN4892 Rev 7.00
August 21, 2015
Page 4 of 12
ICL3207, ICL3217
Electrical Specifications
Test Conditions: V
CC
= 3V to 5.5V, C
1
- C
4
= 0.1F; Unless Otherwise Specified.
Typicals are at T
A
= 25°C
(Continued)
TEST CONDITIONS
TEMP
(°C)
25
25
All Transmitter Outputs Loaded with 3k to Ground
V
CC
= V+ = V- = 0V, Transmitter Output =
2V
V
OUT
=
12V,
V
CC
= 0V or 3V to 5.5V
In Automatic Powerdown
V
CC
= 3.15V, C
1
- C
4
= 0.1F, R
L
= 3kC
L
= 1000pF
V
CC
= 3.0V, C
1
- C
4
= 0.22F, R
L
= 3kC
L
= 1000pF
V
CC
4.5V, C
1
- C
4
= 0.1F, R
L
= 3kC
L
= 1000pF
Receiver Propagation Delay
Transmitter Skew
Receiver Skew
Transition Region Slew Rate
Receiver Input to Receiver
Output, C
L
= 150pF
t
PHL
- t
PLH
t
PHL
- t
PLH
C
L
= 200pF to 2500pF
V
CC
= 3.3V, R
L
= 3kto 7k
Measured From +3V to -3V or -3V
C
L
= 200pF to 1000pF
to +3V
Human Body Model
IEC61000-4-2 Contact Discharge
IEC61000-4-2 Air Gap Discharge
All Other Pins
Human Body Model
t
PHL
t
PLH
Full
Full
Full
Full
MIN
-
3
5.0
300
-
-
TYP
0.3
5
5.4
10M
35
-
MAX
-
7
-
-
60
25
UNITS
V
k
V
mA
A
PARAMETER
Input Hysteresis
Input Resistance
TRANSMITTER OUTPUTS
Output Voltage Swing
Output Resistance
Output Short-Circuit Current
Output Leakage Current
(ICL3217 Only)
TIMING CHARACTERISTICS
Maximum Data Rate
(One Transmitter Switching)
Full
Full
Full
25
25
Full
Full
25
25
250
250
250
-
-
-
-
4
6
500
286
310
0.3
0.3
200
100
15
15
-
-
-
-
-
1000
500
30
30
kbps
kbps
kbps
s
s
ns
ns
V/s
V/s
ESD PERFORMANCE
RS-232 Pins (T
OUT
, R
IN
)
25
25
25
25
-
-
-
-
15
8
6
2
-
-
-
-
kV
kV
kV
kV
Detailed Description
The ICL32X7 interface ICs operate from a single +3V to +5.5V
power supply, guarantee a 250kbps minimum data rate,
require only four small external 0.1F capacitors, feature low
power consumption, and meet all ElA RS-232C and V.28
specifications. The circuit is divided into three sections: The
charge pump, the transmitters, and the receivers.
Transmitters
The transmitters are proprietary, low dropout, inverting drivers
that translate TTL/CMOS inputs to EIA/TIA-232 output levels.
Coupled with the on-chip
5.5V
supplies, these transmitters
deliver true RS-232 levels over a wide range of single supply
system voltages.
ICL3217 transmitter outputs disable and assume a high
impedance state when the device enters the automatic
powerdown mode. These outputs may be driven to
12V
when
disabled.
Both devices guarantee a 250kbps data rate for full load
conditions (3k and 1000pF), V
CC
3.0V, with one transmitter
operating at full speed. Under more typical conditions of
V
CC
3.3V, R
L
= 3k, and C
L
= 250pF, one transmitter easily
operates at 800kbps.
Transmitter inputs float if left unconnected, and may cause I
CC
increases. Connect unused inputs to GND for the best
performance.
Charge-Pump
Intersil’s new ICL32XX family utilizes regulated on-chip dual
charge pumps as voltage doublers, and voltage inverters to
generate
5.5V
transmitter supplies from a V
CC
supply as low
as 3.0V. This allows these devices to maintain RS-232
compliant output levels over the
10%
tolerance range of 3.3V
powered systems. The efficient on-chip power supplies require
only four small, external 0.1F capacitors for the voltage
doubler and inverter functions at V
CC
= 3.3V. See the
“Capacitor Selection” section, and Table 3 for capacitor
recommendations for other operating conditions. The charge
pumps operate discontinuously (i.e., they turn off as soon as the
V+ and V- supplies are pumped up to the nominal values),
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