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MAX3110ECNI Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX3110ECNI Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 31 page MAX3110E/MAX3111E SPI/MICROWIRE-Compatible UART and ±15kV ESD-Protected RS-232 Transceivers with Internal Capacitors Maxim Integrated | 9 www.maximintegrated.com Pin Description Positive terminal of internal inverting charge-pump capacitor. Do not make any connection to this terminal. C2+ 24 Negative terminal of internal inverting charge-pump capacitor. Do not make any connection to this terminal. C2- 25 -5.5V generated by the internal charge pump. Do not make any connection to this terminal. V- 26 Ground GND 27 RS-232 Transmitter Output 2 T2OUT 28 UART Active-Low Interrupt Output. Open-drain interrupt output to microprocessor. IRQ 19 Hardware Shutdown Input. Drive SHDN low to shut down the RS-232 transmitters and charge pump. Drive high for normal operation. SHDN 20 +5.5V generated by the internal charge pump. Do not make any connection to this terminal. V+ 21 Positive terminal of the internal voltage-doubler charge-pump capacitor. Do not make any connection to this terminal. C1+ 22 Negative terminal of the internal voltage-doubler charge-pump capacitor. Do not make any connection to this terminal. C1- 23 SPI/MICROWIRE Serial-Data Input. Schmitt-trigger Input. DIN 15 SPI/MICROWIRE Serial-Data Output. High impedance when CS is high. DOUT 16 SPI/MICROWIRE Serial-Clock Input. Schmitt-trigger input. SCLK 17 UART Active-Low Chip-Select Input. DOUT goes high impedance when CS is high. IRQ, TX, and RTS are always active. Schmitt-trigger input. CS 18 UART Asynchronous Serial-Data (transmitter) Output TX 14 UART Crystal Connection. Leave X2 unconnected when using an external CMOS clock. See the Crystals, Oscillators, and Ceramic Resonators section. X2 9 UART Crystal Connection. X1 also serves as an external CMOS clock input. See the Crystals, Oscillators, and Ceramic Resonators section. X1 10 UART Clear-to-Send Active-Low Input. Read via the CTS bit. CTS 11 UART Request-to-Send Active-Low Output. Controlled by the RTS bit. Also used to control the driver enable in RS-485 networks. RTS 12 UART Asynchronous Serial-Data (receiver) Input. The serial information received from the RS-232 receiver. A transition on RX while in shutdown generates an interrupt (Table 1). RX 13 RS-232 Receiver Output 1, TTL/CMOS R1OUT 5 RS-232 Receiver Input 1 R1IN 6 RS-232 Transmitter Output 1 T1OUT 7 Positive Supply Voltage VCC 8 RS-232 Transmitter lnput 1, TTL/CMOS T1IN 4 RS-232 Transmitter lnput 2, TTL/CMOS T2IN 3 PIN RS-232 Receiver Output 2, TTL/CMOS R2OUT 2 RS-232 Receiver Input 2 R2IN 1 FUNCTION NAME |
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