(Hong Kong)
Product Summary
Jeff Jia
Sales Manager
GUI GUANG INTERNATIONAL TRADE LIMITED
www.ggichk.com
E-mail：jeff@ggichk.com
Tel:0086-15816677110
Fax:00852-35902333
Parametrics
The ADM485 is a differential line transceiver suitable for high
speed bidirectional data communication on multipoint bus
transmission lines. It is designed for balanced data transmission
and complies with EIA standards RS-485 and RS-422. The part
contains a differential line driver and a differential line receiver.
Both the driver and the receiver can be enabled independently.
When disabled, the outputs are three-stated.
The ADM485 operates from a single 5 V power supply.
Excessive power dissipation caused by bus contention or by
output shorting is prevented by a thermal shutdown circuit. If
during fault conditions, a significant temperature increase is
detected in the internal driver circuitry, this feature forces the
driver output into a high impedance state.
Up to 32 transceivers can be connected simultaneously on a
bus, but only one driver should be enabled at any time. It is
important, therefore, that the remaining disabled drivers do not
load the bus. To ensure this, the ADM485 driver features high
output impedance when disabled and when powered down,
which minimizes the loading effect when the transceiver is not
being used. The high impedance driver output is maintained
over the common-mode voltage range of ?7 V to +12 V
Features
Meets EIA RS-485 standard
5 Mbps data rate
Single 5 V supply
–7 V to +12 V bus common-mode range
High speed, low power BiCMOS
Thermal shutdown protection
Short-circuit protection
Driver propagation delay: 10 ns typical
Receiver propagation delay: 15 ns typical
High-Z outputs with power off
Superior upgrade for LTC485
Diagrams
Low power RS-485 systems
DTE/DCE interface
Packet switching
Local area networks (LNAs)
Data concentration
Data multiplexers
Integrated services digital network (ISDN)
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
 ADM485ARZ |
|
IC TX/RX SINGLE RS-485 5V 8SOIC |
Data Sheet |
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|
ADM485ARZ-REEL |
|
IC TXRX RS-485 5V 5MBPS 8SOIC |
Data Sheet |
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