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MAX563CWN Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX563CWN Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 8 page _______________General Description The MAX563 is a +3.3V-powered EIA/TIA-562 transceiver with two transmitters and two receivers. Because it imple- ments the EIA/TIA-562 standard, the MAX563 communi- cates with RS-232 transceivers, yet consumes far less power; this makes it ideal for battery-powered, hand-held computers. And, the MAX563 guarantees a 116kbps data rate while maintaining ±3.7V EIA/TIA-562 signal levels, which makes it compatible with LapLink™ software. An on-board charge pump converts the +3.3V supply to the ±6.6V needed to produce the EIA/TIA-562 output volt- age levels. Four 0.1µF charge-pump capacitors and a bypass capacitor of similar size are the only external com- ponents required. When the MAX563’s charge pumps and transmitters are shut down to save power, the receivers remain active to continuously monitor signals from external devices (for example, ring indicator from modems). The two receivers’ outputs can be enabled and disabled independently of the shutdown function to allow two ports—generally of different types—to be wire-OR connected at the UART. ________________________Applications Handiterminals Battery-Powered Equipment Bar-Code Readers Notebook and Palmtop Computers ____________________________Features o Guaranteed Interoperability with RS-232 o Operates from a Single +3.0V to +3.6V Supply o 2 Drivers, 2 Receivers o Receivers Active in Shutdown Mode o Low-Power Shutdown: 10µA Max o Small Package—18-Pin Wide SO o Three-State TTL/CMOS Receiver Outputs o 116kbps Guaranteed Data Rate ______________Ordering Information +3.3V-Powered, EIA/TIA-562 Dual Transceiver with Receivers Active in Shutdown ________________________________________________________________ Maxim Integrated Products 1 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 C1+ V+ C1- C2+ C2- V- T2OUT R2IN VCC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT MAX563 DIP/SO TOP VIEW EN SHDN __________________Pin Configuration V+ GND VCC +3.3V C1- VCC ALL CAPACITORS 0.1µF 5k V- 5k VOLTAGE DOUBLER VOLTAGE INVERTER CMOS INPUTS CMOS OUTPUTS 1 10 13 11 12 6 5 4 2 3 7 15 8 14 9 18 RS-562/RS-232 INPUTS RS-562 OUTPUTS C1+ C2+ C2- VCC C3 R2IN R1IN T2OUT T1OUT T1IN T2IN R1OUT R2OUT EN 400k 400k SHDN +6.6V -6.6V C4 17 C1 C2 ON/OFF __________Typical Operating Circuit Call toll free 1-800-998-8800 for free samples or literature. 19-0198; Rev 0; 10/93 PART TEMP. RANGE PIN-PACKAGE MAX563CPN 0°C to +70°C 18 Plastic DIP MAX563CWN 0°C to +70°C 18 Wide SO MAX563C/D 0°C to +70°C Dice * ™ LapLink is a registered trademark of Traveling Software, Inc. * Dice are specified at TA = +25°C. |
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