DATASHEET
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
One Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232
Transmitters/Receivers
The Intersil ICL32XX devices are 3.0V to 5.5V powered
RS-232 transmitters/receivers which meet ElA/TIA-232 and
V.28/V.24 specifications, even at V
CC
= 3.0V. Targeted
applications are PDAs, Palmtops, and notebook and laptop
computers where the low operational, and even lower
standby, power consumption is critical. Efficient on-chip
charge pumps, coupled with manual and automatic
powerdown functions (except for the ICL3232), reduce the
standby supply current to a 1A trickle. Small footprint
packaging, and the use of small, low value capacitors ensure
board space savings as well. Data rates greater than
250kbps are guaranteed at worst case load conditions. This
family is fully compatible with 3.3V only systems, mixed 3.3V
and 5.0V systems, and 5.0V only systems.
The ICL324X are 3-driver, 5-receiver devices that provide a
complete serial port suitable for laptop or notebook
computers. Both devices also include noninverting always-
active receivers for “wake-up” capability.
The
ICL3221, ICL3223 and ICL3243,
feature an
automatic powerdown
function which powers down the
on-chip power-supply and driver circuits. This occurs when
an attached peripheral device is shut off or the RS-232
cable is removed, conserving system power automatically
without changes to the hardware or operating system.
These devices power up again when a valid RS-232
voltage is applied to any receiver input.
Table 1 summarizes the features of the devices represented
by this data sheet, while Application Note AN9863
summarizes the features of each device comprising the
ICL32XX 3V family.
FN4805
Rev 22.00
September 1, 2015
Features
• Pb-Free Plus Anneal Available as an Option
(RoHS Compliant) (See Ordering Info)
• 15kV ESD Protected (Human Body Model)
• Drop in Replacements for MAX3221, MAX3222,
MAX3223, MAX3232, MAX3241, MAX3243, SP3243
• ICL3221 is Low Power, Pin Compatible Upgrade for 5V
MAX221
• ICL3222 is Low Power, Pin Compatible Upgrade for 5V
MAX242, and SP312A
• ICL3232 is Low Power Upgrade for HIN232/ICL232 and
Pin Compatible Competitor Devices
• RS-232 Compatible with V
CC
= 2.7V
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
0.1F Capacitors
• Manual and Automatic Powerdown Features (Except
ICL3232)
• Guaranteed Mouse Driveability (ICL324X Only)
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/s
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . . .1A
Applications
• Any System Requiring RS-232 Communication Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Modems, Printers and other Peripherals
- Digital Cameras
- Cellular/Mobile Phones
TABLE 1. SUMMARY OF FEATURES
NO. OF NO. OF
Tx.
Rx.
1
2
2
2
3
3
1
2
2
2
5
5
NO. OF
MONITOR Rx.
(R
OUTB
)
0
0
0
0
2
1
DATA
RATE
(kbps)
250
250
250
250
250
250
Rx. ENABLE
FUNCTION?
Yes
Yes
Yes
No
Yes
No
READY
OUTPUT?
No
No
No
No
No
No
MANUAL
POWER-
DOWN?
Yes
Yes
Yes
No
Yes
Yes
AUTOMATIC
POWERDOWN
FUNCTION?
Yes
No
Yes
No
No
Yes
PART NUMBER
ICL3221
ICL3222
ICL3223
ICL3232
ICL3241
ICL3243
FN4805 Rev 22.00
September 1, 2015
Page 1 of 28
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Ordering Information
PART NUMBER
(NOTE 1)
ICL3221CAZ (Note 2)
ICL3221CVZ (Note 2)
ICL3221IAZ (Note 2)
ICL3222CAZ (Note 2)
ICL3222CBZ (Note 2)
ICL3222CPZ (Note 2)
(No
longer available or
supported)
ICL3222CVZ (Note 2)
ICL3222IAZ (Note 2)
ICL3222IVZ (Note 2)
ICL3223CAZ (Note 2)
ICL3223CPZ (Note 2)
(No
longer available,
recommended
replacement:ICL3223ECVZ)
ICL3223IAZ (Note 2)
ICL3223IVZ (Note 2)
ICL3232CAZ (Note 2)
ICL3232CBZ (Note 2)
ICL3232CBNZ (Note 2)
ICL3232CPZ (Note 2)
ICL3232CVZ (Note 2)
ICL3232IAZ (Note 2)
ICL3232IBZ (Note 2)
ICL3232IBNZ (Note 2)
ICL3232IVZ (Note 2)
ICL3241CAZ (Note 2)
ICL3241CBZ (Note 2)
(No
longer available,
recommended
replacement:ICL3241EIVZ)
ICL3241CVZ (Note 2)
ICL3241IAZ (Note 2)
ICL3241IBZ (Note 2)
(No
longer available,
recommended
replacement:ICL3241EIVZ
ICL3243CAZ (Note 2)
ICL3243CBZ (Note 2)
ICL3243CVZ (Note 2)
ICL3243IAZ (Note 2)
PART MARKING
ICL3221CAZ
3221CVZ
ICL3221IAZ
ICL3222CAZ
3222CBZ
ICL3222CPZ
TEMP. RANGE (°C)
0 to 70
0 to 70
-40 to 85
0 to 70
0 to 70
0 to 70
PACKAGE
16 Ld SSOP (Pb-free)
16 Ld TSSOP (Pb-free)
16 Ld SSOP (Pb-free)
20 Ld SSOP (Pb-free)
18 Ld SOIC (Pb-free)
18 Ld PDIP* (Pb-free)
PKG. DWG. #
M16.209
M16.173
M16.209
M20.209
M18.3
E18.3
ICL3222CVZ
ICL3222IAZ
ICL3222IVZ
ICL3223CAZ
ICL3223CPZ
0 to 70
-40 to 85
-40 to 85
0 to 70
0 to 70
20 Ld TSSOP (Pb-free)
20 Ld SSOP (Pb-free)
20 Ld TSSOP (Pb-free)
20 Ld SSOP (Pb-free)
20 Ld PDIP* (Pb-free)
M20.173
M20.209
M20.173
M20.209
E20.3
ICL3223IAZ
ICL3223IVZ
3232CAZ
3232CBZ
3232CBNZ
ICL3232CPZ
3232CVZ
3232IAZ
3232IBZ
3232IBNZ
3232IVZ
ICL3241CAZ
ICL3241CBZ
-40 to 85
-40 to 85
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
-40 to 85
-40 to 85
-40 to 85
-40 to 85
0 to 70
0 to 70
20 Ld SSOP (Pb-free)
20 Ld TSSOP (Pb-free)
16 Ld SSOP (Pb-free)
16 Ld SOIC (Pb-free)
16 Ld SOIC (N) (Pb-free)
16 Ld PDIP* (Pb-free)
16 Ld TSSOP (Pb-free)
16 Ld SSOP (Pb-free)
16 Ld SOIC (Pb-free)
16 Ld SOIC (N) (Pb-free)
16 Ld TSSOP (Pb-free)
28 Ld SSOP (Pb-free)
28 Ld SOIC (Pb-free)
M20.209
M20.173
M16.209
M16.3
M16.15
E16.3
M16.173
M16.209
M16.3
M16.15
M16.173
M28.209
M28.3
ICL3241CVZ
ICL3241IAZ
ICL3241IBZ
0 to 70
-40 to 85
-40 to 85
28 Ld TSSOP (Pb-free)
28 Ld SSOP (Pb-free)
28 Ld SOIC (Pb-free)
M28.173
M28.209
M28.3
ICL3243CAZ
ICL3243CBZ
ICL3243CVZ
ICL3243IAZ
0 to 70
0 to 70
0 to 70
-40 to 85
28 Ld SSOP (Pb-free)
28 Ld SOIC (Pb-free)
28 Ld TSSOP (Pb-free)
28 Ld SSOP (Pb-free)
M28.209
M28.3
M28.173
M28.209
*Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.
NOTES:
1. Most surface mount devices are available on tape and reel; add “-T” to suffix.
2. Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
FN4805 Rev 22.00
September 1, 2015
Page 2 of 28
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Pinouts
ICL3221 (SSOP, TSSOP)
TOP VIEW
ICL3222 (PDIP, SOIC)
TOP VIEW
EN 1
C1+ 2
V+
3
18 SHDN
17 V
CC
16 GND
15 T1
OUT
14 R1
IN
13 R1
OUT
12 T1
IN
11 T2
IN
10 R2
OUT
EN 1
C1+ 2
V+
3
16 FORCEOFF
15 V
CC
14 GND
13 T1
OUT
12 FORCEON
11 T1
IN
10 INVALID
9 R1
OUT
C1- 4
C2+ 5
C2- 6
V- 7
R1
IN
8
C1- 4
C2+ 5
C2- 6
V- 7
T2
OUT
8
R2
IN
9
ICL3222 (SSOP, TSSOP)
TOP VIEW
EN 1
C1+ 2
V+
3
20 SHDN
19 V
CC
18 GND
17 T1
OUT
16 R1
IN
15 R1
OUT
14 NC
13 T1
IN
12 T2
IN
11 NC
ICL3223 (PDIP, SSOP, TSSOP)
TOP VIEW
EN 1
C1+ 2
V+
3
20 FORCEOFF
19 V
CC
18 GND
17 T1
OUT
16 R1
IN
15 R1
OUT
14 FORCEON
13 T1
IN
12 T2
IN
11 INVALID
C1- 4
C2+ 5
C2- 6
V-
7
C1- 4
C2+ 5
C2- 6
V-
7
T2
OUT
8
R2
IN
9
R2
OUT
10
T2
OUT
8
R2
IN
9
R2
OUT
10
ICL3232 (PDIP, SOIC, SSOP, TSSOP)
TOP VIEW
C1+ 1
V+ 2
C1-
3
16 V
CC
15 GND
14 T1
OUT
13 R1
IN
12 R1
OUT
11 T1
IN
10 T2
IN
9 R2
OUT
ICL3241 (SOIC, SSOP, TSSOP)
TOP VIEW
C2+ 1
C2- 2
V-
3
28 C1+
27 V+
26 V
CC
25 GND
24 C1-
23 EN
22 SHDN
21 R1
OUTB
20 R2
OUTB
19 R1
OUT
18 R2
OUT
17 R3
OUT
16 R4
OUT
15 R5
OUT
C2+ 4
C2- 5
V-
6
R1
IN
4
R2
IN
5
R3
IN
6
R4
IN
7
R5
IN
8
T1
OUT
9
T2
OUT
10
T3
OUT
11
T3
IN
12
T2
IN
13
T1
IN
14
T2
OUT
7
R2
IN
8
FN4805 Rev 22.00
September 1, 2015
Page 3 of 28
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Pinouts
(Continued)
ICL3243 (SOIC, SSOP, TSSOP)
TOP VIEW
C2+ 1
C2- 2
V-
3
28 C1+
27 V+
26 V
CC
25 GND
24 C1-
23 FORCEON
22 FORCEOFF
21 INVALID
20 R2
OUTB
19 R1
OUT
18 R2
OUT
17 R3
OUT
16 R4
OUT
15 R5
OUT
R1
IN
4
R2
IN
5
R3
IN
6
R4
IN
7
R5
IN
8
T1
OUT
9
T2
OUT
10
T3
OUT
11
T3
IN
12
T2
IN
13
T1
IN
14
Pin Descriptions
PIN
V
CC
V+
V-
GND
C1+
C1-
C2+
C2-
T
IN
T
OUT
R
IN
R
OUT
R
OUTB
INVALID
EN
SHDN
System power supply input (3.0V to 5.5V).
Internally generated positive transmitter supply (+5.5V).
Internally generated negative transmitter supply (-5.5V).
Ground connection.
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
TTL/CMOS compatible transmitter Inputs.
RS-232 level (nominally
5.5V)
transmitter outputs.
RS-232 compatible receiver inputs.
TTL/CMOS level receiver outputs.
TTL/CMOS level, noninverting, always enabled receiver outputs.
Active low output that indicates if no valid RS-232 levels are present on any receiver input.
Active low receiver enable control; doesn’t disable R
OUTB
outputs.
Active low input to shut down transmitters and on-board power supply, to place device in low power mode.
FUNCTION
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (See Table 2).
FORCEON
Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
FN4805 Rev 22.00
September 1, 2015
Page 4 of 28
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Typical Operating Circuits
ICL3221
C
3
(OPTIONAL CONNECTION, NOTE)
+3.3V
+
+
+3.3V
0.1F
C1+
C1-
C2+
C2-
T
1
15
V
CC
V+
3
+ C
3
0.1F
C
4
+ 0.1F
RS-232
LEVELS
T1
OUT
R1
IN
C
1
0.1F
C
2
0.1F
+
0.1F
+
2
4
5
+
6
12
11
C1+
C1-
C2+
C2-
T
1
T
2
V-
15
8
ICL3222
C
3
(OPTIONAL CONNECTION, NOTE)
+
17
V
CC
3
V+
7
+
+ C
3
0.1F
C
4
0.1F
T1
OUT
T2
OUT
RS-232
LEVELS
RS-232
LEVELS
14
R
1
R2
OUT
10
1 EN
R
2
5k
18
5k
9
R2
IN
R1
IN
GND
16
SHDN
V
CC
C
1
0.1F
C
2
0.1F
TTL/CMOS
LOGIC LEVELS
2
+
4
+
6
5
V- 7
13
T1
IN
R1
OUT
11
T1
IN
TTL/CMOS
LOGIC LEVELS
T2
IN
9
R
1
1 EN
FORCEOFF
12
FORCEON
GND
14
INVALID
5k
8
16
10
R1
OUT
13
V
CC
TO POWER
CONTROL
LOGIC
NOTE: The negative terminal of C
3
can be
connected to either V
CC
or GND
NOTE: The negative terminal of C
3
can be
connected to either V
CC
or GND
ICL3223
+3.3V
+
0.1F
2
+
4
5
+
6
13
12
C1+
C1-
C2+
C2-
T
1
T
2
19
V
CC
V+
3
+ C
3
0.1F
C
4
0.1F
+
T1
OUT
T1
IN
RS-232
LEVELS
T2
OUT
TTL/CMOS
LOGIC LEVELS
T2
IN
+3.3V
ICL3232
C
3
(OPTIONAL CONNECTION, NOTE)
+
16
V
CC
V+
2
+ C
3
0.1F
C
4
0.1F
+
T1
OUT
T2
OUT
V-
T
1
T
2
6
14
7
13
R
1
R2
OUT
V
CC
TO POWER
CONTROL LOGIC
9
R
2
GND
15
5k
5k
8
R2
IN
R1
IN
+
0.1F
1
+
+
3
4
5
11
10
C1+
C1-
C2+
C2-
C
1
0.1F
C
2
0.1F
V- 7
17
8
C
1
0.1F
C
2
0.1F
T1
IN
TTL/CMOS
LOGIC LEVELS
T2
IN
R1
OUT
15
R
1
5k
16
R1
IN
R2
OUT
10
1
EN
R
2
5k
9
R1
OUT
12
R2
IN
FORCEOFF
14
FORCEON
GND
18
INVALID
20
11
NOTE: The negative terminal of C
3
can be
connected to either V
CC
or GND
FN4805 Rev 22.00
September 1, 2015
Page 5 of 28
