Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
?
?


( File format: PDF, 570 Kbytes )
Low Power TIA/EIA-485 Transceiver with Sleep Mode
National Semiconductor

Description
The DS36C279 is a low power differential bus/line transceiver designed to meet the requirements of RS-485 Standard for multipoint data transmission. In addition it is compatible with TIA/EIA-422-B. The sleep mode feature automatically puts the device in a power saving mode when both the driver and receiver are disabled.?? The device is ideal for use in power conscious applications where the device may be disabled for extended periods of time. The driver and receiver outputs feature TRI-STATE? capability. The driver outputs operate over the entire common mode range of -7V to +12V. Bus contention or fault situations that cause excessive power dissipation within the device are handled by a thermal shutdown circuit, which forces the driver outputs into a high impedance state. The receiver incorporates a fail safe circuit which guarantees a high output state when the inputs are left open.? The DS36C279T is fully specified over the industrial temperature range (-40C to +85C).
Features

???100% RS-485 compliant
???Guaranteed RS-485 device interoperation
???Low power CMOS design: ICC 500 ?A max
???Automatic sensing sleep mode
???Reduces ICC to 10 ?A maximum
???Built-in power up/down glitch-free circuitry
???Permits live transceiver intersection/displacement
???SOIC packages
???Industrial temperature range: -40C to +85C
???On-board thermal shutdown circuitry
???Prevents damage to the device in the event of excessive power dissipation
???Wide common mode range: -7V to +12V
???Receive open input fail-safe
???? unit load (DS36C279): >= 128 nodes
???? unit load (DS36C279T): >= 64 nodes
???ESD (Human Body Model): >= 2 kV
???Drop-in replacement for:
???LTC485 MAX485 DS75176 DS3695




As the hyperlinked contents/websites are those of third parties, we cannot vouch for their accuracy or legitimacy.
Interviews & Viewpoints

Talk

Learn how senior executives are seeing the industry from interviews and contributed opinions.

Bloggers Say

Bloggers Say

See what engineers like you are posting on our pages.

?
?
Back to Top