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MAX3233EEWP Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3233EEWP Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. ________________General Description The MAX3233E/MAX3235E are EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/ wake-up features, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV using IEC 1000-4-2 Contact Discharge, and to ±15kV using the Human Body Model. The MAX3233E operates from a +3.3V supply; the MAX3235E operates from +5.0V. 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 following two conditions occur: either 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 receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system. The MAX3233E/MAX3235E have internal dual charge pumps requiring no external capacitors. Both trans- ceivers have a proprietary low-dropout transmitter out- put stage that enables true RS-232 performance from a +3.0V to +3.6V supply for the MAX3233E or a +4.5V to +5.5V supply for the MAX3235E. These devices are guaranteed to operate up to 250kbps. Both are avail- able in space-saving 20-pin wide SO or plastic DIP packages. ________________________Applications Subnotebook and Palmtop Computers Cellular Phones Battery-Powered Equipment Hand-Held Equipment Peripherals Embedded Systems ____________________________Features o ESD Protection for RS-232 I/O Pins ±15kV—Human Body Model ±8kV—IEC 1000-4-2, Contact Discharge ±15kV—IEC 1000-4-2, Air-Gap Discharge o Latchup Free o 1µA Supply Current o AutoShutdown Plus—1997 EDN Magazine Innovation of the Year o Single-Supply Operation +3.0V to +3.6V (MAX3233E) +4.5V to +5.5V (MAX3235E) o 250kbps Guaranteed Data Rate o 6V/µs Guaranteed Slew Rate o Meets EIA/TIA-232 Specifications Down to 3.0V (MAX3233E) o Internal Charge-Pump Capacitors ±15kV ESD-Protected, 1µA, 250kbps, 3.3V/5V, Dual RS-232 Transceivers with Internal Capacitors ________________________________________________________________ Maxim Integrated Products 1 19-1473; Rev 0; 4/99 PART MAX3233ECWP 0°C to +70°C TEMP. RANGE PIN-PACKAGE 20 SO AutoShutdown Plus is a trademark of Maxim Integrated Products. _______________Ordering Information Ordering Information continued at end of data sheet. MAX3233E MAX3235E 12 13 14 15 16 17 18 4 1 R2OUT R2IN T2OUT GND V- C2- C2+ C1- C1+ V+ V+ INVALID T2IN T1IN FORCEON R1OUT T1OUT R1IN VCC FORCEOFF 2 9 10 5 6 7 8 3 19 20 11 CHARGE PUMP SO/DIP Pin Configuration/ Functional Diagram Typical Operating Circuit appears at end of data sheet. MAX3233ECPP 0°C to +70°C 20 Plastic DIP MAX3233EEPP -40°C to +85°C 20 Plastic DIP MAX3233EEWP -40°C to +85°C 20 SO †Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; 5,649,210; and other patents pending. |
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