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ICL3245E Datasheet(PDF) 1 Page - Intersil Corporation |
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ICL3245E Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 20 page 1 ® FN4900.9 ICL3225E, ICL3227E, ICL3245E ±15kV ESD Protected, +3V to +5.5V, 1Microamp, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown 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 enhanced automatic powerdown functions, reduce the standby supply current to a 1 µA trickle. Small footprint packaging, and the use of small, low value capacitors ensure board space savings as well. Data rates greater than 1Mbps 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 ICL3245E is a 3 driver, 5 receiver device that provides a complete serial port suitable for laptop or notebook computers. It also includes a noninverting always-active receiver for “wake-up” capability. These devices, feature an enhanced automatic powerdown function which powers down the on-chip power- supply and driver circuits. This occurs when all receiver and transmitter inputs detect no signal transitions for a period of 30s. These devices power back up, automatically, whenever they sense a transition on any transmitter or receiver input. Table 1 summarizes the features of the device represented by this data sheet, while Application Note AN9863 summarizes the features of each device comprising the ICL32XXE 3V family. Features • Pb-Free Plus Anneal Available (RoHS Compliant) (see Ordering Info) • ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000) • Manual and Enhanced Automatic Powerdown Features • Drop in Replacements for MAX3225E, MAX3227E, MAX3245E • 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 0.1 µF Capacitors • Guaranteed Mouse Driveability (ICL3245E) • “Ready to Transmit” Indicator Output (ICL3225E/ICL3227E) • Receiver Hysteresis For Improved Noise Immunity • Guaranteed Minimum Data Rate . . . . . . . . . . . . . . 1Mbps • Low Skew at Transmitter/Receiver Input Trip Points . . . 10ns • Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . 24V/ µs • Wide Power Supply Range . . . . . . . Single +3V to +5.5V • Low Supply Current in Powerdown State. . . . . . . . . . .1 µA 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 PART NUMBER NO. OF Tx. NO. OF Rx. NO. OF MONITOR Rx. (ROUTB) DATA RATE (kbps) Rx. ENABLE FUNCTION? READY OUTPUT? MANUAL POWER- DOWN? ENHANCED AUTOMATIC POWERDOWN FUNCTION? ICL3225E 2 2 0 1000 No Yes Yes Yes ICL3227E 1 1 0 1000 No Yes Yes Yes ICL3245E 3 5 1 1000 No No Yes Yes Data Sheet February 27, 2006 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2000, 2001, 2003-2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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