ADM3493
PRODUCTION3.3 V, ⅛ Load, Low Power, RS-485/RS-422 Transceiver (Half Duplex, 250 kbps, Slew Rate Limited, DE/RE)
- Part Models
- 2
- 1ku List Price
- Starting From $1.40
Overview
- Operates with 3.3 V Supply
- Interoperable with 5 V Logic
- EIA RS-422 and RS-485 Compliant over Full CM Range
- Data Rate: 250 kbps
- Half Duplex Transceiver
- Reduced Slew Rates for Low EMI
- 2 nA Supply Current in Shutdown Mode
- Up to 256 Transceivers on a Bus
- −7 V to +12 V Bus Common-mode Range
- Specified over −40°C to +85°C Temperature Range
- 8 ns Skew
- Available in 8-lead SOIC
The ADM3493 is a low power, differential line transceiver designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes it ideal for power-sensitive applications. The ADM3493 is suitable for communication on multipoint bus transmission lines.
The device contains one driver and one receiver. Designed for half-duplex communication, the ADM3493 features a slew rate limited driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps.
The receiver input impedance is 96 kΩ, allowing up to 256 transceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions then the thermal shutdown circuit forces the driver output into a high impedance state. The receiver contains a fail-safe feature that results in a logic high output state, if the inputs are unconnected (floating).
The ADM3493 is fully specified over the commercial and industrial temperature ranges and is available in an 8-lead SOIC.
Documentation
Data Sheet 1
Application Note 2
Video 1
Webcast 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADM3493ARZ | 8-Lead SOIC | ||
| ADM3493ARZ-REEL7 | 8-Lead SOIC |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Nov 8, 2017 - 17_0142 ADM3483, ADM3485, ADM3488, ADM3490, ADM3491 and ADM3493 Low Power, RS-485/RS-422 Transceiver Product Alternate Fabrication Foundry |
||
| ADM3493ARZ | PRODUCTION | |
| ADM3493ARZ-REEL7 | PRODUCTION | |
|
Jul 20, 2012 - 12_0105 Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor |
||
| ADM3493ARZ | PRODUCTION | |
| ADM3493ARZ-REEL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| ADM3061E | PRODUCTION | 3.0 V to 5.5 V, ±12 kV IEC ESD Protected, Half Duplex 500 kbps RS-485 Transceiver |
Evaluation Kits
Standard RS-485 Half-Duplex Evaluation Board, EVAL-RS485HDEBZ