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DS232AS

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仕様・特性

DS232A Dual RS-232 Transmitter/Receiver www.dalsemi.com FEATURES PIN ASSIGNMENT Compatible with LT1181A and MAX232A High data rate - 250 kbits/sec under load 16-pin DIP or SOIC package 20-pin TSSOP package for height restricted applications Operate from single +5V power Meets all EIA-232E and V0.28 specifications Uses small capacitors: 0.1 µF Optional industrial temperature range available (-40°C to +85°C) C1+ V+ C1C2+ C2VT2OUT R2IN 16 15 14 13 12 11 10 9 VCC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT 16-Pin DIP AND SOIC C1+ V+ C1C2+ NC C2VNC T2OUT R2IN ORDERING INFORMATION DS232A DS232A-N DS232AR DS232AR-N DS232AS DS232AS-N DS232AE DS232AE-N 1 2 3 4 5 6 7 8 16-pin DIP 16-pin DIP (Industrial) 16-pin SOIC (150-Mil) 16-pin SOIC (150-Mil) (Industrial) 16-pin SOIC (300-Mil) 16-pin SOIC (300-Mil) (Industrial) 20-pin TSSOP 20-pin TSSOP (Industrial) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 NC VCC GND T1OUT R1IN R1OUT NC T1IN T2IN R2OUT 20-Pin TSSOP PIN DESCRIPTION VCC GND V+ VT1IN, T2IN T1OUT, T2OUT R1IN, R2IN R1OUT, R2OUT C1+, C1C2+, C2- - +5-Volt Supply - Ground - Positive Supply Output - Negative Supply Output - RS-232 Driver Inputs - RS-232 Driver Outputs - Receiver Inputs - Receiver Outputs - Capacitor 1 Connections - Capacitor 2 Connections DESCRIPTION The DS232A is a dual RS-232 driver/receiver pair that generates RS-232 voltage levels from a single +5volt power supply. Additional ±12-volt supplies are not needed since the DS232A uses on-board charge pumps to convert the +5-volt supply to ±10 volts. The DS232A is fully compliant with EIA RS-232E and V0.28/V0.24 standards. The DS232A contains two drivers and two receivers. Driver slew rates and data rates are guaranteed up to 250k bits/sec. The DS232A operates with only 0.1 µF charge pump capacitors. OPERATION The diagram in Figure 1 shows the main elements of the DS232A. The following paragraphs describe the function of each pin. 1 of 10 112099

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