Allicdata Part #: | ADM2483BRWZ-ND |
Manufacturer Part#: |
ADM2483BRWZ |
Price: | $ 1.42 |
Product Category: | Isolators |
Manufacturer: | Analog Devices Inc. |
Short Description: | DGTL ISO RS422/RS485 16SOICRS422, RS485 Digital Is... |
More Detail: | N/A |
DataSheet: | ADM2483BRWZ Datasheet/PDF |
Quantity: | 21134 |
1 +: | $ 1.42000 |
Series: | iCoupler® |
Packaging: | Tube |
Part Status: | Active |
Technology: | Magnetic Coupling |
Type: | RS422, RS485 |
Isolated Power: | No |
Number of Channels: | 3 |
Inputs - Side 1/Side 2: | 2/1 |
Channel Type: | Bidirectional |
Voltage - Isolation: | 2500Vrms |
Common Mode Transient Immunity (Min): | 25kV/µs |
Data Rate: | 500kbps |
Propagation Delay tpLH / tpHL (Max): | -- |
Pulse Width Distortion (Max): | -- |
Rise / Fall Time (Typ): | 600ns, 600ns (Max) |
Voltage - Supply: | 3 V, 5 V |
Operating Temperature: | -40°C ~ 85°C |
Mounting Type: | Surface Mount |
Package / Case: | 16-SOIC (0.295", 7.50mm Width) |
Supplier Device Package: | 16-SOIC |
Base Part Number: | ADM2483 |
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1. DESCRIPTION
The ADM2483BRWZ differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on balanced, multipoint bus transmission lines. It complies with ANSI EIA/TIA-485-A and ISO 8482: 1987(E). Using Analog Devices’ iCoupler technology, the ADM2483 combines a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. The logic side of the device is powered with either a 5 V or 3 V supply, and the bus side uses a 5 V supply only. The ADM2483 is slew-limited to reduce reflections with improperly terminated transmission lines. The controlled slew rate limits the data rate to 500 kbps. The device’s input impedance is 96 kΩ, allowing up to 256 transceivers on the bus. Its driver has an active-high enable feature. The driver differential outputs and receiver differential inputs are connected internally to form a differential I/O port. When the driver is disabled or when VDD1 or VDD2 = 0 V, this imposes minimal loading on the bus. An active-high receiver disable feature, which causes the receive output to enter a high impedance state, is provided as well. The receiver inputs have a true fail-safe feature that ensures a logic-high receiver output level when the inputs are open or shorted. This guarantees that the receiver outputs are in a known state before communication begins and at the point when communication ends. Current limiting and thermal shutdown features protect against output short circuits and bus contention situations that might cause excessive power dissipation. The part is fully specified over the industrial temperature range and is available in a 16-lead, wide body SOIC package.
2. FEATURES
1. RS-485 transceiver with electrical data isolation
2. Complies with ANSI TIA/EIA RS-485-A and ISO 8482: 1987(E)
3. 500 kbps data rate
4. Slew rate-limited driver outputs
5. Low power operation: 2.5 mA max
6. Suitable for 5 V or 3 V operations (VDD1)
7. High common-mode transient immunity: >25 kV/μs
8. True fail-safe receiver inputs
9. Chatter-free power-up/power-down protection
10. 256 nodes on bus
11. Thermal shutdown protection
12. Safety and regulatory approvals
13. UL recognition: 2500 V rms for 1 minute per UL 1577
14. CSA Component Acceptance Notice 5A
15. IEC 609501 800 V rms (basic), 400 V rms (reinforced)
16. VDE Certificate of Conformity
17. DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
18. VIORM = 560 V peak
19. CQC certification per GB4943.1-2011
20. Operating temperature range: −40°C to +85°C
3. Pin Configuration
4. APPLICATIONS
1. Low power RS-485/RS-422 networks
2. Isolated interfaces
3. Building control networks
4. Multipoint data transmission systems
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