ADM485JN - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADM485JN
Manufacturer

ADI
ChipWorker Part#

CW12134229
Category

Interface IC, Interface Controller
Package

DIP-8
Description

Single Transmitter/Receiver RS-422/RS-485 8Pin PDIP
Documentation

Datasheet

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ADM485JN Specifications

Attribute	Attribute Value

Part Number	ADM485JN
Manufacturer	ADI
ChipWorker Part#	CW12134229
Category	Interface IC, Interface Controller
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	8 Pin
Case/Package	DIP-8
Supply Voltage (DC)	5.00V (max)
Supply Current	2.2 mA
Data Rate	5.00 Mbps
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	4.75V ~ 5.25V
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Size-Height	3.3 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Obsolete
Packaging	Tube
RoHS	Non-Compliant
Lead-Free Status	Contains Lead
HK STC License	NLR

Product Description

Product Details
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 both 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 may be enabled independently. When disabled, the outputs are tristated.
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. This feature forces the driver output into a high impedance state if during fault conditions a significant temperature increase is detected in the internal driver circuitry.
Up to 32 transceivers may 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 also when powered down.
This minimizes the loading effect when the transceiver is not being utilized. The high impedance driver output is maintained over the entire common-mode voltage range form -7V to +12 V.
The receiver contains a fail safe feature which results in a logic high output state if the inputs are unconnected (floating).
The ADM485 is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology. All inputs and outputs contain protection against EDS; all diver outputs feature high source and sink current capability. An epitaxial layer is used to guard against latch-up.
The ADM485 features extremely fast switching speeds. Minimal driver propagation delays permit transmission at data rates up to 5 Mbits/s while low skew minimizes EMI interference.
The part is fully specified over the commercial and industrial temperature range and is available in an 8-pin DIL/SOIC packages.
### Features and Benefits
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
Receiver Propagation Delay: 15 ns
High Z Outputs with Power Off
Superior Upgrade for LTC485

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
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- Anti-vibration foam
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- Surface testing

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