Key facts
- Brand
- Maxim
- Model
- MAX308
- Category
- Other Electronics
- Documents
- 4
- Languages
- EN
- Last added
- 2012-06-08
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Maxim MAX3080-MAX3089 RS-485/RS-422 Transceivers Datasheet
The document describes a family of high-speed transceivers (MAX3080-MAX3089) designed for RS-485/RS-422 communication. These devices feature fail-safe circuitry to guarantee a logic-high receiver output when inputs are open or shorted, ensuring error-free data transmission up to 10Mbps depending on the specific model and slew-rate settings.
The transceivers support various operating modes including full-duplex and half-duplex communications. They allow up to 256 transceivers on a single bus due to their 1/8-unit-load receiver input impedance. Specific models offer selectable slew rates or independent phase controls for twisted-pair reversal correction.
Maxim MAX308 specifications
| Maximum Data Rate (MAX3086-MAX3089) | 10 Mbps |
|---|---|
| Maximum Data Rate (MAX3083-MAX3085) | 500 kbps |
| Maximum Data Rate (MAX3080-MAX3082) | 115 kbps |
| Receiver Input Impedance | 1/8-unit-load |
| Maximum Transceivers on Bus | 256 |
| Supply Current (No Load) | 375 µA |
Source: Maxim MAX3080-MAX3089 RS-485/RS-422 Transceivers Datasheet
All Maxim MAX308 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- Maxim MAX3080-MAX3089 RS-485/RS-422 Transceivers Datasheet 20 p
- Maxim Integrated MAX3080–MAX3089 RS-485/RS-422 Transceivers Datasheet 20 p
- Maxim Integrated MAX3080E–MAX3089E RS-485/RS-422 Transceiver Datasheet 20 p
- Maxim MAX308/MAX309 Precision 8‑Channel/Dual 4‑Channel CMOS Analog Multiplexer Datasheet 12 p
Questions answered in these manuals
What is the maximum transmit speed for the MAX3086 through MAX3088 models?
The MAX3086, MAX3087, and MAX3088 models support transmit speeds up to 10Mbps because their driver slew rates are not limited.
From: Maxim MAX3080-MAX3089 RS-485/RS-422 Transceivers Datasheet
How many transceivers can be connected on a bus using these devices?
All devices in this series allow up to 256 transceivers to be connected on the bus.
From: Maxim MAX3080-MAX3089 RS-485/RS-422 Transceivers Datasheet
What is the supply current in low‑power shutdown mode?
In shutdown, the devices typically draw only 1 nA of supply current.
From: Maxim Integrated MAX3080–MAX3089 RS-485/RS-422 Transceivers Datasheet
How do I select half‑duplex or full‑duplex operation?
Use the Half/Full‑Duplex selector pin (H/F): connect H/F to VCC for half‑duplex, or to GND/leave unconnected for full‑duplex.
From: Maxim Integrated MAX3080–MAX3089 RS-485/RS-422 Transceivers Datasheet
What is the maximum data rate of the MAX3089E?
The MAX3089E can operate at up to 10 Mbps, selectable via the slew‑rate selector pin.
From: Maxim Integrated MAX3080E–MAX3089E RS-485/RS-422 Transceiver Datasheet
How many transceivers can be connected on a single RS‑485 bus?
The devices support up to 256 transceivers on the bus thanks to their 1/8‑unit‑load receiver input impedance.
From: Maxim Integrated MAX3080E–MAX3089E RS-485/RS-422 Transceiver Datasheet