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Teilenummer | DS229S |
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Beschreibung | Triple RS-232 Transmitter/Receiver | |
Hersteller | Dallas Semiconducotr | |
Logo | ||
Gesamt 9 Seiten www.dalsemi.com
DS229
Triple RS-232 Transmitter/Receiver
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)
ORDERING INFORMATION
DS229
20-pin DIP
DS229N 20-pin DIP (Industrial)
DS229S
20-pin SOIC
DS229SN 20-pin SOIC (Industrial)
DS229E
20-pin TSSOP
DS229EN 20-pin TSSOP (Industrial)
PIN ASSIGNMENT
C1+
V+
C1-
C2+
C2-
V-
T2OUT
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
PIN DESCRIPTION
VCC
GND
- +5-Volt Supply
- Ground
V+ - Positive Supply Output
V- - Negative Supply Output
T1IN, T2IN, T3IN
- RS-232 Driver Inputs
T1OUT, T2OUT, T3OUT - RS-232 Driver Outputs
R1IN, R2IN, R3IN
- Receiver Inputs
R1OUT, R2OUT, R3OUT - Receiver Outputs
C1+, C1-
- Capacitor 1 Connections
C2+, C2-
- Capacitor 2 Connections
DESCRIPTION
The DS229 is a triple RS-232 driver/receiver pair that generates RS-232 voltage levels from a single +5-
volt 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
TRANSMITTER PROPAGATION DELAY TIMING Figure 2
DS229
RECEIVER PROPAGATION DELAY TIMING Figure 3
6 of 9
6 Page | ||
Seiten | Gesamt 9 Seiten | |
PDF Download | [ DS229S Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
DS229 | Triple RS-232 Transmitter/Receiver | Dallas Semiconducotr |
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DS229E | Triple RS-232 Transmitter/Receiver | Dallas Semiconducotr |
DS229EN | Triple RS-232 Transmitter/Receiver | Dallas Semiconducotr |
DS229N | Triple RS-232 Transmitter/Receiver | Dallas Semiconducotr |
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