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DS275
线路供电的RS-232收发器芯片


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概述
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The DS275 Line-Powered RS-232 Transceiver Chip derives power from the data line providing an extremely low-cost and low-power RS-232 serial port interface. The receiver input translates RS-232 signal levels to common CMOS/TTL levels. The transmitter circuit 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.

The DS275's power-saving interface is ideal for connecting battery-powered systems such as laptop computers, remote sensors, and portable instrumentation.

关键特性
  • Low-power serial transmitter/receiver for battery-powered systems
  • Power-saving transmitter steals power from receive signal
  • Ultra-low-static current, even connected to RS-232-E port
  • Transmitter level varies from +5 to +12V
  • Compatible with RS-232-E signals
  • Low-power CMOS

Key Specifications:   RS-232 Line Driver/Receivers
Part Number Supply Voltage (V) Number of Tx Number of Rx Typ. ICC Current (mA) Internal Charge Pump Number of Ext. Caps Package Price**
DS275  5
12
1 1 0.04 No 0 PDIP(N)/8
TSSOP/14
$2.43 @ 1k
See All RS-232 Line Driver/Receivers (156)
Notes:
**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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    1999-11-22
    本页最后一次更新: 2007-06-22


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