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Updated at 01/11/2025 10:30:15(UTC+8)
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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
ADM485JR Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Surface Mount |
| Number of Pins | 8 Pin |
| Case/Package | SOIC |
| Supply Voltage (DC) | 5.00V (max) |
| Supply Current | 2.20 mA |
| Data Rate | 5.00 Mbps |
| Operating Temperature (Max) | 70 ℃ |
| Operating Temperature (Min) | 0 ℃ |
| Show | |
| Size-Height | 1.5 mm |
| Product Lifecycle Status | Obsolete |
| Packaging | Tube |
| RoHS | Non-Compliant |
| Lead-Free Status | Contains Lead |
| HK STC License | NLR |
Order guide
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PayPal. Customer is responsible for shipping fee, bank
charges, duties and taxes.
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- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
Contact Us
If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.
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