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MAX3225E Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3225E Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 21 page AVAILABLE Functional Diagrams Pin Configurations appear at end of data sheet. Functional Diagrams continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. ________________General Description The MAX3224E/MAX3225E/MAX3226E/MAX3227E/ MAX3244E/MAX3245E are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automat- ic shutdown/wakeup features, high data-rate capabili- ties, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model. All devices achieve a 1µA supply current using Maxim’s revolutionary AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive, and the UART driving the transmitter inputs is inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiv- er input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system. The MAX3225E/MAX3227E/MAX3245E also feature MegaBaud™ operation, guaranteeing 1Mbps for high- speed applications such as communicating with ISDN modems. The MAX3224E/MAX3226E/MAX3244E guar- antee 250kbps operation. The transceivers have a pro- prietary low-dropout transmitter output stage enabling true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a 3.3V supply. The MAX3224E–MAX3227E feature a logic- level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting. All devices are available in a space-saving TQFN, SSOP, and TSSOP (MAX3224E/MAX3225E/MAX3244E/ MAX3245E) packages. ________________________Applications Notebook, Subnotebook, and Palmtop Computers Cellular Phones Battery-Powered Equipment Hand-Held Equipment Peripherals Printers __Next Generation Device Features ♦♦ For Space-Constrained Applications: MAX3228E/MAX3229E: ±15kV ESD-Protected, +2.5V to +5.5V, RS-232 Transceivers in UCSP™ MAX3222E/MAX3232E/MAX3241E/MAX3246E: ±15kV ESD-Protected, Down to 10nA, +3.0V to +5.5V, Up to 1Mbps, True RS-232 Transceivers (MAX3246E Available in UCSP) ♦♦ For Low-Voltage or Data Cable Applications: MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins ±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus 19-1339; Rev 10; 3/11 PART MAX3224E MAX3225E MAX3226E 1/1 2/2 2/2 NO. OF DRIVERS/ RECEIVERS READY OUTPUT ✔ ✔ ✔ Auto- Shutdown Plus ✔ ✔ ✔ 250k 1M 250k GUARANTEED DATA RATE (bps) MAX3227E MAX3244E MAX3245E 3/5 3/5 1/1 ✔ — — ✔ ✔ ✔ 1M 250k 1M Ordering Information continued at end of data sheet. + Denotes a lead(Pb)-free/RoHS-compliant package. * EP = Exposed pad. AutoShutdown Plus, MegaBaud, and UCSP are trademarks of Maxim Integrated Products, Inc. _____________________ Selector Guide Ordering Information PART TEMP RANGE PIN-PACKAGE MAX3224ECTP+ 0 °C to +70°C 20 TQFN-EP* MAX3224ECUP+ 0 °C to +70°C 20 TSSOP MAX3224ECAP+ 0 °C to +70°C 20 SSOP MAX3224ECPP+ 0 °C to +70°C 20 Plastic DIP MAX3224EETP+ -40 °C to +85°C 20 TQFN-EP* MAX3224EEUP+ -40 °C to +85°C 20 TSSOP MAX3224EEAP+ -40 °C to +85°C 20 SSOP MAX3224EEPP+ -40 °C to +85°C 20 Plastic DIP MAX3224EAAP+ -40 °C to +125°C 20 SSOP MAX3224E/MAX3225E/ MAX3226E/MAX3227E/ MAX3244E/MAX3245E |
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