Datasheet ICL3221E, ICL3222E, ICL3223E, ICL3232E, ICL3241E, ICL3243E 15kV ESD Protected, +3V to +5.5V, 1A, 250kbps, RS-232 Transmitters/Receivers The ICL3221E, ICL3222E, ICL3223E, ICL3232E, Features ICL3241E, and ICL3243E are 3.0V to 5.5V powered ESD protection for RS-232 I/O pins to 15kV RS-232 transmitters/receivers that meet ElA/TIA-232 (IEC61000) and V.28/V.24 specifications, even at V = 3.0V. CC Drop-in replacements for the MAX3221E, Additionally, they provide 15kV ESD protection MAX3222E, MAX3223E, MAX3232E, MAX3241E, (IEC61000-4-2 Air Gap and Human Body Model) on MAX3243E, and SP3243E transmitter outputs and receiver inputs (RS-232 pins). Targeted applications are notebook and laptop The ICL3221E is a low-power, pin-compatible computers in which the low operational power upgrade for the 5V MAX221E consumption and even lower standby power The ICL3222E is a low-power, pin-compatible consumption is critical. Efficient on-chip charge upgrade for the 5V MAX242E and SP312E pumps, coupled with manual and automatic power-down functions (except for the ICL3232E), The ICL3232E is a low-power upgrade for the reduce the standby supply current to a 1A trickle. HIN232E, ICL232, and pin-compatible competitor Small footprint packaging and the use of small, low devices value capacitors ensure board space savings. Data RS-232 compatible with V = 2.7V CC rates greater than 250kbps are ensured at worst case Meets EIA/TIA-232 and V.28/V.24 specifications load conditions. This family is fully compatible with at 3V 3.3V-only systems, mixed 3.3V and 5.0V systems, and 5.0V-only systems. Latch-up free The ICL324XE are 3-driver, 5-receiver devices that On-chip voltage converters require only four provide a complete serial port suitable for laptop or external 0.1F capacitors at V = 3.3V CC notebook computers. Both devices also include Manual and automatic power-down features noninverting always-active receivers for wake-up Ensured mouse driveability (ICL324xE only) capability. Receiver hysteresis for improved noise immunity The ICL3221E, ICL3223E, and ICL3243E feature an automatic power-down function that powers down the Ensured minimum data rate: 250kbps on-chip power supply and driver circuits. Power-down Wide power supply range: single +3V to +5.5V occurs when an attached peripheral device is shut off or the RS-232 cable is removed, which conserves Low supply current in power-down state: 1A system power automatically without changes to the Pb-free (RoHS compliant) hardware or operating system. These devices power up again when a valid RS-232 voltage is applied to Applications any receiver input. Any system requiring RS-232 communication ports Table 1 on page 2 summarizes the features of the Battery powered, hand-held, and portable devices represented by this datasheet, and equipment Application Note AN9863 summarizes the features of each device in the ICL32xxE 3V family. Laptop computers and notebooks Modems, printers, and other peripherals Related Literature Digital cameras For a full list of documents, visit our website: Cellular/mobile phones ICL3221E, ICL3222E, ICL3223E, ICL3232E, ICL3241E, and ICL3243E device pages FN4910 Rev.24.00 Page 1 of 39 May 30, 2019ICL3221E, ICL3222E, ICL3223E, ICL3232E, ICL3241E, ICL3243E Table 1. Summary of Features Number of Monitor Data Receiver Automatic Part Number of Number of Receivers Rate Enable Ready Manual Power-Down Number Tx Rx (R ) (kbps) Function Output Power-Down Function outb ICL3221E 1 1 0 250 Yes No Yes Yes ICL3222E 2 2 0 250 Yes No Yes No ICL3223E 2 2 0 250 Yes No Yes Yes ICL3232E 2 2 0 250 No No No No ICL3241E 3 5 2 250 Yes No Yes No ICL3243E 3 5 1 250 No No Yes Yes FN4910 Rev.24.00 Page 2 of 39 May 30, 2019