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參數(shù)資料
| 型號(hào)： | DS275 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 通用總線功能 |
| 英文描述： | Line-Powered RS232 Transceiver Chip(線供電的RS232收發(fā)器) |
| 中文描述： | LINE TRANSCEIVER, PDIP8 |
| 封裝： | 0.300 INCH, DIP-8 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 95K |
| 代理商： | DS275 |
DS275
Line–Powered RS–232 Transceiver Chip
DS275
030698 1/8
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
ORDERING INFORMATION
DS275
DS275S
DS275E
8–pin DIP
8–pin SOIC
14–pin TSSOP
PIN ASSIGNMENT
DS275 8–PIN DIP (300 Mil.)
DS275S 8–PIN SOIC (150 MIL)
RX
OUT
TX
IN
GND
V
DRV
V
CC
RX
IN
NC
TX
OUT
1
2
3
4
5
6
7
8
V
CC
NC
NC
RX
IN
NC
NC
TX
OUT
RX
OUT
NC
V
DRV
NC
TX
IN
NC
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
DS275E 14–PIN TSSOP
PIN DESCRIPTION
RX
OUT
V
DRV
TX
IN
GND
TX
OUT
NC
RX
IN
V
CC
– 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 in-
put 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 con-
sumption. This feature is especially important for bat-
tery–powered systems such as laptop computers, re-
mote sensors, and portable medical instruments.
During an actual communication session, the DS275’s
transmitter will use system power (5–12 volts) for posi-
tive transitions while still employing the receive signal
for negative transitions.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS275+ | 功能描述:RS-232接口集成電路 Line-Powered RS-232 Transceiver Chip RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| DS2751 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Multichemistry Fuel Garge |
| DS2751+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Multichemistry Fuel Garge |
| DS2751+025 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Multichemistry Fuel Garge |
| DS2751-025 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Multichemistry Fuel Garge |
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