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UT3223 Datasheet(PDF) 2 Page - Unisonic Technologies |
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UT3223 Datasheet(HTML) 2 Page - Unisonic Technologies |
2 / 9 page UT3223 Preliminary CMOS IC UNISONICTECHNOLOGIESCO.,LTD 2 of 9 www.unisonic.com.tw QW-R502-A91.e ■ MARKING PIN CONFIGURATION 1 C2+ 2 C2- 3 V- 4 R1IN 5 R2IN 6 7 8 9 T1OUT 10 T2OUT 20 C1+ 19 V+ 18 VCC 17 GND 16 C1- 15 FORCEON 14 13 12 11 R2OUT UTC UT3223 R1OUT T1IN T2IN INVALID FORCEOFF EN PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 EN Receiver Enable Control. Drive low for normal operation. Drive high to force the receiver outputs (R_OUT) into a high-impedance state. 2 C1+ Positive terminal of the voltage doubler charge-pump capacitor. 3 V+ +5.5V generated by the charge pump. 4 C1- Negative terminal of the voltage doubler charge-pump capacitor. 5 C2+ Positive terminal of inverting charge-pump capacitor. 6 C2- Negative terminal of inverting charge-pump capacitor. 7 V- -5.5V generated by the charge pump. 8 T2OUT RS-232 Transmitter 2 Output. 9 R2IN RS-232 Receiver 2 Input. 10 R2OUT TTL/CMOS Receiver 2 Output. 11 INVALID Output of the valid signal detector. Indicates if a valid RS-232 level is present on receiver inputs logic “1”. 12 T2IN TTL/CMOS Transmitter 2 Input. 13 T1IN TTL/CMOS Transmitter 1 Input. 14 FORCEON Drive high to override automatic circuitry keeping transmitters on ( FORCEOFF must be high) (Table 2). 15 R1OUT TTL/CMOS Receiver 1 Output. 16 R1IN RS-232 Receiver 1 Input. 17 T1OUT RS-232 Transmitter 1 Output. 18 GND Ground. 19 VCC +3.0V ~ +5.5V Supply Voltage. 20 FORCEOFF Drive low to shut down transmitters and on-board power supply. This over-rides all automatic circuitry and FORCEON (Table 2). |
Similar Part No. - UT3223_17 |
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Similar Description - UT3223_17 |
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