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DS275

Description
LINE TRANSCEIVER, PDIP8
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size126KB,8 Pages
ManufacturerDALLAS
Websitehttp://www.dalsemi.com
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DS275 Overview

LINE TRANSCEIVER, PDIP8

DS275 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerDALLAS
package instruction0.300 INCH, DIP-8
Reach Compliance Codeunknow
Differential outputNO
Number of drives1
Input propertiesSCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-232-E
JESD-30 codeR-PDIP-T8
JESD-609 codee0
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Minimum output swing12 V
Output characteristicsTOTEM-POLE
Maximum output low current0.0032 A
Output polarityINVERTED
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
power supply5 V
Certification statusNot Qualified
Maximum receive delay
Number of receiver bits1
Maximum slew rate0.1 mA
Maximum supply voltage5.5 V
Minimum supply voltage4.5 V
Nominal supply voltage5 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
DS275
Line-Powered RS-232 Transceiver Chip
www.dalsemi.com
FEATURES
Low-power serial transmitter/receiver for
battery-backed systems
Transmitter steals power from receive signal
line to save power
Ultra-low static current, even when connected
to RS-232-E port
Variable transmitter level from +5 to +12
volts
Compatible with RS-232-E signals
Available in 8-pin, 150 mil wide SOIC
package (DS275S)
Low-power CMOS
PIN ASSIGNMENT
RX
OUT
V
DRV
TX
IN
GND
1
2
3
4
8
7
6
5
V
CC
RX
IN
NC
TX
OUT
DS275 8-Pin DIP (300-mil)
DS275 8-Pin SOIC (150-mil)
RX
OUT
NC
V
DRV
NC
TX
IN
NC
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
NC
NC
RX
IN
NC
NC
TX
OUT
ORDERING INFORMATION
DS275
DS275S
DS275E
8-pin DIP
8-pin SOIC
14-pin TSSOP
RX
OUT
V
DRV
TX
IN
GND
TX
OUT
NC
RX
IN
V
CC
DS275E 14-Pin TSSOP
PIN DESCRIPTION
- RS-232 Receiver Output
- Transmit driver +V
- RS-232 Driver Input
- System Ground (0V)
- RS-232 Driver Output
- No Connection
- RS-232 Receive Input
-System Logic Supply (+5V)
DESCRIPTION
The DS275 Line-Powered RS-232 Transceiver Chip is a CMOS device that provides a low-cost, very
low-power interface to RS-232 serial ports. The receiver input translates RS-232 signal levels to common
CMOS/TTL levels. The transmitter employs a unique circuit which steals current from the receive RS-
232 signal when that signal is in a negative state (marking). Since most serial communication ports
remain in a negative state statically, using the receive signal for negative power greatly reduces the
DS275’s static power consumption. This feature is especially important for battery-powered systems such
as laptop computers, remote sensors, and portable medical instruments. During an actual communication
session, the DS275’s transmitter will use system power (5-12 volts) for positive transitions while still
employing the receive signal for negative transitions.
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112299

DS275 Related Products

DS275 DS275S DS275E
Description LINE TRANSCEIVER, PDIP8 LINE TRANSCEIVER, PDSO8 LINE TRANSCEIVER, PDSO14
Is it Rohs certified? incompatible incompatible incompatible
Maker DALLAS DALLAS DALLAS
package instruction 0.300 INCH, DIP-8 0.150 INCH, SOIC-8 TSSOP-14
Reach Compliance Code unknow unknown unknown
Differential output NO NO NO
Number of drives 1 1 1
Input properties SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER
Interface integrated circuit type LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER
Interface standards EIA-232-E EIA-232-E EIA-232-E
JESD-30 code R-PDIP-T8 R-PDSO-G8 R-PDSO-G14
JESD-609 code e0 e0 e0
Number of functions 1 1 1
Number of terminals 8 8 14
Maximum operating temperature 70 °C 70 °C 70 °C
Minimum output swing 12 V 12 V 12 V
Output characteristics TOTEM-POLE TOTEM-POLE TOTEM-POLE
Maximum output low current 0.0032 A 0.0032 A 0.0032 A
Output polarity INVERTED INVERTED INVERTED
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP SOP TSSOP
Encapsulate equivalent code DIP8,.3 SOP8,.25 TSSOP14,.25
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE SMALL OUTLINE SMALL OUTLINE
power supply 5 V 5 V 5 V
Certification status Not Qualified Not Qualified Not Qualified
Number of receiver bits 1 1 1
Maximum slew rate 0.1 mA 0.1 mA 0.1 mA
Maximum supply voltage 5.5 V 5.5 V 5.5 V
Minimum supply voltage 4.5 V 4.5 V 4.5 V
Nominal supply voltage 5 V 5 V 5 V
surface mount NO YES YES
technology CMOS CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form THROUGH-HOLE GULL WING GULL WING
Terminal pitch 2.54 mm 1.27 mm 0.635 mm
Terminal location DUAL DUAL DUAL
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