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SP3220EET-LTR Datasheet(PDF) 6 Page - Exar Corporation |
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SP3220EET-LTR Datasheet(HTML) 6 Page - Exar Corporation |
6 / 21 page 6 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP3220E_EB_EU_101_060311 Table 1. Device Pin Description NAME FUNCTION PIN NUMBER EN Receiver Enable. Apply Logic LOW for normal operation. Apply logic HIGH to disable the receiver outputs (high-Z state) 1 C1+ Positive terminal of the voltage doubler charge-pump capacitor 2 V+ +5.5V output generated by the charge pump 3 C1- Negative terminal of the voltage doubler charge-pump capacitor 4 C2+ Positive terminal of the inverting charge-pump capacitor 5 C2- Negative terminal of the inverting charge-pump capacitor 6 V- -5.5V output generated by the charge pump 7 R 1IN RS-232 receiver input 8 R 1OUT TTL/CMOS receiver output 9 T 1IN TTL/CMOS driver input 11 T 1OUT RS-232 driver output. 13 GND Ground 14 V CC +3.0V to +5.5V supply voltage 15 SHDN Shutdown Control Input. Drive HIGH for normal device operation. Drive LOW to shutdown the drivers (high-Z output) and the on- board power supply 16 N.C. No Connect 10, 12 PIN FUNCTION |
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