Product Summary

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.

Parametrics

DS275 absolute maximum ratings: (1)VCC: -0.3 to +7.0 volts; (2)VDRV: -0.3 to +13.0 volts; (3)RXIN: ±15 volts; (4)TXIN: -0.3 to VCC + 0.3 volts; (5)TXOUT: ±15 volts; (6)RXOUT: -0.3 to VCC + 0.3 volts; (7)Storage Temperature: -55℃ to +125℃; (8)Operating Temperature: 0℃ to 70℃.

Features

DS275 features: (1)Low-power serial transmitter/receiver for battery-backed systems; (2)Transmitter steals power from receive signal line to save power; (3)Ultra-low static current, even when connected to RS-232-E port; (4)Variable transmitter level from +5 to +12 volts; (5)Compatible with RS-232-E signals; (6)Available in 8-pin, 150 mil wide SOIC package (DS275S); (7)Low-power CMOS.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS2751
DS2751

Other


Data Sheet

Negotiable 
DS2751E
DS2751E

Maxim Integrated Products

Battery Management

Data Sheet

Negotiable 
DS2751E+
DS2751E+

Maxim Integrated Products

Battery Management

Data Sheet

Negotiable 
DS2751E+025
DS2751E+025

Maxim Integrated Products

Battery Management

Data Sheet

Negotiable 
DS2751E+T&R
DS2751E+T&R

Maxim Integrated Products

Battery Management

Data Sheet

Negotiable 
DS2751K
DS2751K

Other


Data Sheet

Negotiable 
DS2755
DS2755

Other


Data Sheet

Negotiable 
DS2756E+
DS2756E+

Maxim Integrated Products

Battery Management High-Accuracy Bat Fuel Gauge

Data Sheet

0-1: $3.23
1-25: $2.17
25-50: $1.57
50-100: $1.55