ICL3221E, ICL3222E, ICL3223E,
ICL3232E, ICL3241E, ICL3243E
®
Data Sheet
March 8, 2005
FN4910.18
±15kV ESD Protected, +3V to +5.5V,
1Microamp, 250kbps, RS-232
Transmitters/Receivers
Features
• Pb-free Available (RoHS Compliant) (See Ordering Info)
• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)
The Intersil ICL32XXE devices are 3.0V to 5.5V powered
RS-232 transmitters/receivers which meet ElA/TIA-232 and
• Drop in Replacements for MAX3221E, MAX3222E,
MAX3223E, MAX3232E, MAX3241E, MAX3243E,
SP3243E
• ICL3221E is a Low Power, Pin Compatible Upgrade for 5V
MAX221E
• ICL3222E is a Low Power, Pin Compatible Upgrade for 5V
MAX242E, and SP312E
• ICL3232E is a Low Power Upgrade for HIN232E, ICL232
and Pin Compatible Competitor Devices
• RS-232 Compatible with V
CC
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
0.1µF Capacitors
• Manual and Automatic Powerdown Features
V.28/V.24 specifications, even at V
= 3.0V. Additionally,
CC
they provide ±15kV ESD protection (IEC61000-4-2 Air Gap
and Human Body Model) on transmitter outputs and receiver
inputs (RS-232 pins). 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 ICL3232E), reduce the standby supply
current to a 1µA 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.
= 2.7V
• Guaranteed Mouse Driveability (ICL324XE Only)
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . . .1µA
The ICL324XE 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 ICL3221E, ICL3223E and ICL3243E, 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.
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
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
ICL32XXE 3V family.
- Cellular/Mobile Phones
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
TABLE 1. SUMMARY OF FEATURES
NO. OF
MONITOR Rx.
DATA
MANUAL
POWER-
DOWN?
AUTOMATIC
POWERDOWN
FUNCTION?
NO. OF NO.OF
RATE
Rx. ENABLE
FUNCTION?
READY
PART NUMBER
ICL3221E
ICL3222E
ICL3223E
ICL3232E
ICL3241E
ICL3243E
Tx.
1
Rx.
1
(R
)
(kbps)
250
OUTPUT?
OUTB
0
Yes
Yes
Yes
No
No
No
No
No
No
No
Yes
Yes
Yes
No
Yes
No
2
2
0
0
0
2
1
250
2
2
250
Yes
No
2
2
250
3
5
250
Yes
No
Yes
Yes
No
3
5
250
Yes
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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1
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