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MAX3111ECNI Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3111ECNI Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 31 page For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. General Description The MAX3110E/MAX3111E combine a full-featured uni- versal asynchronous receiver/transmitter (UART) with ±15kV ESD-protected RS-232 transceivers and inte- grated charge-pump capacitors into a single 28-pin package for use in space-, cost-, and power-con- strained applications. The MAX3110E/MAX3111E also feature an SPI™/QSPI™/MICROWIRE™-compatible serial interface to save additional board space and microcontroller (µC) I/O pins. A proprietary low-dropout output stage enables the 2-driver/2-receiver interface to deliver true RS-232 per- formance down to VCC = +3V (+4.5V for MAX3110E) while consuming only 600µA. The receivers remain active in a hardware/software-invoked shutdown, allow- ing external devices to be monitored while consuming only 10µA. Each device is guaranteed to operate at up to 230kbps while maintaining true EIA/TIA-232 output voltage levels. The MAX3110E/MAX3111E’s UART includes a crystal oscillator and baud-rate generator with software-pro- grammable divider ratios for all common baud rates from 300baud to 230kbaud. The UART features an 8- word-deep receive FIFO that minimizes processor over- head and provides a flexible interrupt with four maskable sources. Two control lines (one input and one output) are included for hardware handshaking. The UART and RS-232 functions can be used together or independently since the two functions share only supply and ground connections (the MAX3110E/ MAX3111E are hardware- and software-compatible with the MAX3100 and MAX3222E). ________________________Applications Point-of-Sale (POS) Devices Handy-Terminals Telecom/Networking Diagnostic Ports Industrial Front-Panel Interfaces Hand-Held/Battery-Powered Equipment Features ♦ Integrated RS-232 Transceiver and UART in a Single 28-Pin Package ♦ SPI/QSPI/MICROWIRE-Compatible µC Interface ♦ Internal Charge-Pump Capacitors— No External Components Required! ♦ True RS-232 Operation Down to VCC = +3V (MAX3111E) ♦ 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 ♦ Single-Supply Operation +5V (MAX3110E) +3.3V (MAX3111E) ♦ Low Power 600µA Supply Current 10µA Shutdown Supply Current with Receiver Interrupt Active ♦ Guaranteed 230kbps Data Rate ♦ Hardware/Software-Compatible with MAX3100 and MAX3222E SPI/MICROWIRE-Compatible UART and ±15kV ESD- Protected RS-232 Transceivers with Internal Capacitors ________________________________________________________________ Maxim Integrated Products 1 67 8 RS-232 DB-9 CS SCLK SPI DIN DOUT μP U A R T 9 12 3 4 5 IRQ MAX3110E MAX3111E 19-1494; Rev 1; 12/05 Typical Application Circuit Ordering Information SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Ordering Information continued at end of data sheet. Pin Configuration appears at end of data sheet. †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; and other patents pending. PART MAX3110ECWI MAX3110ECNI 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN- PACKAGE 28 Wide SO 28 Plastic DIP VCC (V) 5 5 |
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