DS1228中文資料亞德諾數(shù)據(jù)手冊PDF規(guī)格書

DESCRIPTION

The DS1228 is a dual RS-232-C Receiver/Transmitter that meets all EIA specifications while operating from a single, +5 volt supply. The DS1228 has two internal charge pumps. One of the charge pumps is used to generate +10 volts. The other is used to generate -10 volts. The DS1228 also contains four level translators. Two of the level translators are RS-232 transmitters which convert TTL/CMOS inputs into +9V RS-232 outputs. The other two level translators are capable of operating with up to +30V inputs. The DS1228 is suitable for all RS-232 communications and is particularly valuable where higher voltage power supplies for RS-232 drivers are not available. The power supply section of the DS1228 supplies +10 volts from the VCC input.

See the DS1229 data sheet for electrical specifications and operation.

FEATURES

? Operates from a single 5V power supply

? Two drivers and two receivers

? Meets all EIA RS-232-C specifications

? On-board voltage doubler

? On-board voltage inverter

? + 30V input levels

? + 9V output levels with + 5V supply

? Low-power CMOS

? Pin-compatible with the MAX 232

? Optional 16-pin SOIC surface mount package