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Intersil Corporation - (ICL32xxE) RS-232 Transmitters/Receivers

Numéro de référence ICL3222E
Description (ICL32xxE) RS-232 Transmitters/Receivers
Fabricant Intersil Corporation 
Logo Intersil Corporation 





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ICL3222E fiche technique
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Data Sheet
ICL3221E, ICL3222E, ICL3223E,
ICL3232E, ICL3241E, ICL3243E
June 22, 2007
FN4910.19
±15kV ESD Protected, +3V to +5.5V,
1Microamp, 250kbps, RS-232
Transmitters/Receivers
The Intersil ICL32xxE 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 VCC = 3.0V. Additionally,
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.
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
www.cDhaatanSgheesett4oUt.hceomhardware 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
ICL32xxE 3V family.
Features
• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)
• 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 VCC = 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
0.1µF Capacitors
• Manual and Automatic Powerdown Features
• 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
• Pb-Free Plus Anneal Available (RoHS Compliant)
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
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
PART
NUMBER
ICL3221E
ICL3222E
ICL3223E
ICL3232E
ICL3241E
ICL3243E
NUMBER NUMBER
OF Tx OF Rx
11
22
22
22
35
35
TABLE 1. SUMMARY OF FEATURES
NUMBER OF
MONITOR
RECEIVERS
(ROUTB)
0
DATA
RATE
(kbps)
250
RECEIVER
ENABLE
FUNCTION?
Yes
0 250 Yes
0 250 Yes
0 250 No
2 250 Yes
1 250 No
READY
OUTPUT?
No
No
No
No
No
No
MANUAL
AUTOMATIC
POWERDOWN
POWER-DOWN? FUNCTION?
Yes Yes
Yes No
Yes Yes
No No
Yes No
Yes Yes
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2000-2005, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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