Datasheet ICL3225E, ICL3227E, ICL3245E 15kV ESD Protected, +3V to +5.5V, 1A, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown The ICL3225E, ICL3227E, and ICL3245E devices are Features 3.0V to 5.5V powered RS-232 transmitters/receivers Pb-free (RoHS compliant) that meet ElA/TIA-232 and V.28/V.24 specifications, ESD protection for RS-232 I/O pins to 15kV even at V = 3.0V. They provide 15kV ESD CC (IEC61000) protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs Manual and enhanced automatic powerdown (RS-232 pins). Targeted applications are PDAs, features Palmtops, and notebook and laptop computers where Drop in replacements for MAX3225E, MAX3227E, the low operational power consumption and even MAX3245E lower standby power consumption are critical. Efficient on-chip charge pumps coupled with manual RS-232 compatible with V = 2.7V CC and enhanced automatic powerdown functions, Meets EIA/TIA-232 and V.28/V.24 specifications at reduce the standby supply current to a 1A trickle. 3V Small footprint packaging and the use of small, low Latch-up free value capacitors ensure board space savings. Data rates greater than 1Mbps are ensured at worst case On-chip voltage converters require only four load conditions. This family is fully compatible with external 0.1F capacitors 3.3V only systems, mixed 3.3V and 5.0V systems, Ensured mouse driveability (ICL3245E) and 5.0V only systems. Ready to Transmit indicator output The ICL3245E is a 3-driver, 5-receiver device that (ICL3225E/ICL3227E) provides a complete serial port suitable for laptop or Receiver hysteresis for improved noise immunity notebook computers. It also includes a noninverting always-active receiver for wake-up capability. Ensured minimum data rate: 1Mbps The ICL3225E, ICL3227E, and ICL3245E feature an Low skew at transmitter/receiver input trip enhanced automatic powerdown function that powers points: 10ns down the on-chip power supply and driver circuits. Ensured minimum slew rate: 24V/s Powerdown occurs when all receiver and transmitter inputs detect no signal transitions for a period of 30s. Wide power supply range: single +3V to +5.5V These devices power back up automatically Low supply current in powerdown state: 1A whenever they sense a transition on any transmitter or receiver input. Applications Table 1 summarizes the features of the device Any system requiring RS-232 communication ports represented by this datasheet and AN9863 Battery powered, hand-held, and portable summarizes the features of each device in the equipment ICL32xxE 3V family. Laptop computers, notebooks, palmtops Related Literature Modems, printers, and other peripherals For a full list of related documents, visit our website: Digital cameras ICL3225E, ICL3227E, and ICL3245E device pages Cellular/mobile phones FN4900 Rev.13.00 Page 1 of 28 May.2.19ICL3225E, ICL3227E, ICL3245E Contents 1. Overview . 3 1.1 Typical Operating Circuits . 3 1.2 Ordering Information . 5 1.3 Pin Configurations . 5 1.4 Pin Descriptions . 6 2. Specifications . 7 2.1 Absolute Maximum Ratings 7 2.2 Thermal Information 7 2.3 Recommended Operating Conditions 7 2.4 Electrical Specifications . 8 3. Typical Performance Curves 10 4. Application Information 12 4.1 Charge Pump 12 4.1.1 Charge Pump Abs Max Ratings . 12 4.2 Transmitters . 13 4.3 Receivers . 14 4.4 Powerdown Functionality . 15 4.4.1 Software Controlled (Manual) Powerdown . 16 4.4.2 INVALID Output 16 4.4.3 Enhanced Automatic Powerdown 17 4.4.4 Emulating Standard Automatic Powerdown . 18 4.4.5 Hybrid Automatic Powerdown Options 19 4.5 READY Output (ICL3225E and ICL3227E Only) . 19 4.6 Capacitor Selection . 19 4.7 Power Supply Decoupling 19 4.8 Operation Down to 2.7V . 19 4.9 Transmitter Outputs when Exiting Powerdown 19 4.10 Mouse Driveability 20 4.11 High Data Rates . 20 4.12 Interconnection with 3V and 5V Logic . 21 5. 15kV ESD Protection . 22 5.1 Human Body Model (HBM) Testing . 22 5.2 IEC61000-4-2 Testing . 22 5.3 Air-Gap Discharge Test Method 22 5.4 Contact Discharge Test Method 22 6. Die Characteristics . 23 7. Revision History 24 8. Package Outline Drawings . 25 FN4900 Rev.13.00 Page 2 of 28 May.2.19