The AD7306 line driver/receiver is a 5 V monolithic product which provides an interface between TTL signal levels and dual standard EIA RS-232/RS-422 signal levels. The part contains two RS-232 drivers, one RS-422 driver, one RS-232 receiver, and one receiver path which can be configured either as RS-232 or as RS-422.
An internal charge pump voltage converter facilities operation from a single +5 V power supply. The internal charge pump generates ±10 V levels allowing RS-232 output levels to be developed without the need for external bipolar power supplies.
A highly efficient charge pump design allows operation using non polarized, miniature 0.1 µF capacitors. This gives a considerable saving in printed circuit board space over conventional products which can use up to 10 µF capacitors. The charge pump output voltages may also be used to power external circuitry which requires dual supplies.
The RS-232 channels are suitable for communications rates up to 100 kHz and the RS-422 channels are suitable for high speed communications up to 5 MHz. The RS-422 transmitter complementary outputs are closeley matched and feature low timing skew between the complementary outputs. This is often an essentail requirement to meet tight system timing specifications.
All inputs feature ESD protection, all driver outputs feature high source and sink current capability and are internally protected against short circuits on the outputs. An epitaxial layer is used to guard against latch-up.
The part is available in a 24-pin SOIC package.
|Title||Content Type||File Type|
|AD7306: +5 V Powered RS-232/RS-422 Transceiver Data Sheet (Rev B, 08/1994) (pdf, 149 kB)||Data Sheets|
(doc, 38 kB)
... RS-232, RS-422, RS-423 and RS-485
EMC, CE Mark, IEC801... What's it all about?
... New devices to ease the job.
(Analog Dialogue, Vol. 30, No. 4)
|RS-232 Transceivers Applications Bulletin (Summer 2008) (pdf, 196 kB)||Solutions Bulletins|
|RS-232 Products Brochure (Summer 2007) (pdf, 593 kB)||Overview|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.