SPI/MICROWIRE-Compatible UART MAX3110E/MAX3111E and 15kV ESD-Protected RS-232 Transceivers with Internal Capacitors General Description Benefits and Features The MAX3110E/MAX3111E combine a full-featured uni- Integration Reduces Cost and Board Space versal asynchronous receiver/transmitter (UART) with Integrated RS-232 Transceiver and UART in a 15kV ESD-protected RS-232 transceivers and inte- Single 28-Pin Package grated charge-pump capacitors into a single 28-pin Guaranteed 230kbps Data Rate package for use in space-, cost-, and power-con- SPI/QSPI/MICROWIRE-Compatible C Interface strained applications. The MAX3110E/MAX3111E also feature an SPI/QSPI/MICROWIRE -compatible serial Internal Charge-Pump CapacitorsNo External interface to save additional board space and microcon- Components Required troller (C) I/O pins. Low-Power Operation Reduces Thermal Dissipation A proprietary low-dropout output stage enables the True RS-232 Operation Down to V = +3V CC 2-driver/2-receiver interface to deliver true RS-232 per- (MAX3111E) formance down to V = +3V (+4.5V for MAX3110E) CC Single-Supply Operation while consuming only 600A. The receivers remain +5V (MAX3110E) active in a hardware/software-invoked shutdown, allow- ing external devices to be monitored while consuming +3.3V (MAX3111E) only 10A. Each device is guaranteed to operate at up 600A Supply Current to 230kbps while maintaining true EIA/TIA-232 output 10A Shutdown Supply Current with Receiver voltage levels. Interrupt Active The MAX3110E/MAX3111Es UART includes a crystal Hardware/Software-Compatible with MAX3100 and oscillator and baud-rate generator with software-pro- MAX3222E 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- Ordering Information head and provides a flexible interrupt with four TEMP. PIN- V maskable sources. Two control lines (one input and CC PART RANGE PACKAGE (V) one output) are included for hardware handshaking. MAX3110ECWI 0C to +70C 28 Wide SO 5 The UART and RS-232 functions can be used together or independently since the two functions share only MAX3110ECNI 0C to +70C 28 Plastic DIP 5 supply and ground connections (the MAX3110E/ Ordering Information continued at end of data sheet. MAX3111E are hardware- and software-compatible with the MAX3100 and MAX3222E). Typical Application Circuit Applications Point-of-Sale (POS) Devices MAX3110E MAX3111E Handy-Terminals SPI RS-232 Telecom/Networking Diagnostic Ports DB-9 CS Industrial Front-Panel Interfaces SCLK U 12 3 4 5 A DIN Hand-Held/Battery-Powered Equipment P R DOUT 67 8 9 T Pin Configuration appears at end of data sheet. IRQ 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. QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corp. 19-1494 Rev 2 2/15SPI/MICROWIRE-Compatible UART MAX3110E/MAX3111E and 15kV ESD-Protected RS-232 Transceivers with Internal Capacitors Absolute Maximum Ratings V to GND (MAX3110E) ........................................-0.3V to +6V Short-Circuit Duration CC V to GND (MAX3111E).........................................-0.3V to +4V CC X2, DOUT, IRQ (to V or GND).............................Continuous CC V+ to GND (Note 1)..................................................-0.3V to +7V T OUT (to GND) .....................................................Continuous V- to GND (Note 1) ...................................................+0.3V to -7V Continuous Power Dissipation (T = +70C) A V+ to V- (Note 1)..................................................................+13V 28-pin Wide SO (derate 12.5mW/C above +70C) ...........1W Input Voltages to GND 28-pin Plastic DIP (derate 14.3mW/C above +70C) ....1.14W CS, X1, CTS, RX, DIN, SCLK.................. -0.3V to (V + 0.3V) Operating Temperature Ranges CC MAX311 EC .................................................. 0C to +70C T IN, SHDN ...........................................................-0.3V to +6V MAX311 EE ................................................-40C to +85C R IN ..................................................................................25V Storage Temperature Range ............................-65C to +150C Output Voltage to GND Lead Temperature (soldering, 10s) .................................+300C DOUT, RTS, TX, X2 .................................-0.3V to (V + 0.3V) CC Soldering Temperature (reflow) IRQ .......................................................................-0.3V to +6V PDIP lead(Pb)-free........................................................+225C T OUT ...........................................................................13.2V PDIP containing lead(Pb)..............................................+240C R OUT.....................................................-0.3V to (V + 0.3V) CC Wide SO lead(Pb)-free..................................................+225C TX, RTS Output Current ....................................................100mA Wide SO containing lead(Pb) .......................................+240C Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference should not exceed 13V. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical CharacteristicsMAX3110E (V = +4.5V to +5.5V, T = T to T , unless otherwise noted. Typical values are measured for baud rate set to 9600baud at CC A MIN MAX V = +5V, T = +25C.) (Note 2) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS (V = +5V, T = +25C) CC A Supply Current I SHDN = V , no load 0.6 2 mA CC CC Supply Current with Hardware I SHDN = GND (Note 3) 0.48 1 mA CCSHDN(H) Shutdown Supply Current with Hardware I 320 A SHDN = GND, SHDNi bit = 1 (Note 4) CCSHDN(H+ S) and Software Shutdown UART OSCILLATOR INPUT (X1) V Input High Voltage V 0.7V V IH1 CC Input Low Voltage V 0.2V V IL1 CC SHDNi bit = 0 25 Input Current I V = 0 or 5.5V A IN1 X1 SHDNi bit = 1 2 Input Capacitance C 5 pF IN1 UART LOGIC INPUTS (DIN, SCLK, CS, CTS, RX)) Input High Voltage V 0.7V V IH2 CC Input Low Voltage V 0.3V V IL2 CC Input Hysteresis V 250 mV HYST2 Input Leakage Current I 1 A LKG1 Input Capacitance C 5 pF IN2 RS-232 LOGIC INPUTS (T IN, SHDN)) Input High Voltage V V = 5V 2.4 IH3 CC Input Low Voltage V 0.8 V IL3 Transmitter Input Hysteresis V 500 mV HYST3 Input Leakage Current I 0.01 1 A IN3 www.maximintegrated.com Maxim Integrated 2