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DS229

Dallas Semiconducotr
Part Number DS229
Manufacturer Dallas Semiconducotr
Description Triple RS-232 Transmitter/Receiver
Published Mar 30, 2005
Detailed Description DS229 Triple RS-232 Transmitter/Receiver www.dalsemi.com FEATURES Compatible with DS1229 5V operation 20-pin DIP or SOI...
Datasheet PDF File DS229 PDF File

DS229
DS229

Overview
DS229 Triple RS-232 Transmitter/Receiver www.
dalsemi.
com FEATURES Compatible with DS1229 5V operation 20-pin DIP or SOIC package 20-pin TSSOP package for height restricted applications Operate from single +5V power Meets all EIA-232E and V.
28 specifications Uses small capacitors: 0.
1 µF Optional industrial temperature range available (-40°C to +85°C) PIN ASSIGNMENT C1+ V+ C1C2+ C2VT2OUT R2IN T3OUT R3IN 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT T3IN R3OUT 20-Pin DIP, SOIC AND TSSOP ORDERING INFORMATION DS229 DS229N DS229S DS229SN DS229E DS229EN 20-pin DIP 20-pin DIP (Industrial) 20-pin SOIC 20-pin SOIC (Industrial) 20-pin TSSOP 20-pin TSSOP (Industrial) PIN DESCRIPTION VCC GND V+ VT1IN, T2IN, T3IN T1OUT, T2OUT, T3OUT R1IN, R2IN, R3IN R1OUT, R2OUT, R3OUT 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 DS229 is a triple 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 DS229 uses on-board charge pumps to convert the +5-volt supply to ±10 volts.
The DS229 is fully compliant with EIA RS-232E and V.
28/V.
24 standards.
The DS229 contains three drivers and three receivers.
Driver slew rates and data rates are guaranteed up to 116 kbits/sec.
The DS229 operates with only 0.
1 µF charge pump capacitors.
OPERATION The diagram in Figure 1 shows the main elements of the DS229.
The following paragraphs describe the function of each pin.
1 of 9 112099 DS229 FUNCTIONAL DIAGRAM OF DS229 Figure 1 NOTE: C5 is a recommended decoupling capacitor which is the same value as C1, C2, C3, and C4.
PIN DESCRIPTIONS VCC, GND: DC power is provided to the device on these pins.
VCC is the +5-volt input.
V+: Positive supply output (RS-232).
V+ req...


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