ADUM1254ASA+
ActiveBIDIRECTIONAL I2C ISOLATOR WITH IDLE-BUS HOT SWAP AND LOW VOL
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ADUM1254ASA+
ActiveBIDIRECTIONAL I2C ISOLATOR WITH IDLE-BUS HOT SWAP AND LOW VOL
Technical Specifications
Parameters and characteristics for this part
| Specification | ADUM1254ASA+ |
|---|---|
| Channel Type | Bidirectional |
| Common Mode Transient Immunity (Min) [Min] | 100 V/ns |
| Data Rate | 2 MHz |
| Inputs - Side 1/Side 2 [custom] | 2 |
| Inputs - Side 1/Side 2 [custom] | 2 |
| Isolated Power | True, False |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Package / Case | 0.154 in |
| Package / Case | 8-SOIC |
| Package / Case | 3.9 mm |
| Propagation Delay tpLH / tpHL (Max) [Max] [custom] | 128.4 ns |
| Propagation Delay tpLH / tpHL (Max) [Max] [custom] | 95.8 ns |
| Pulse Width Distortion (Max) [Max] | 94.2 ns |
| Rise / Fall Time (Typ) | 20.3 ns |
| Rise / Fall Time (Typ) | - |
| Supplier Device Package | 8-SOIC |
| Technology | Magnetic Coupling |
| Type | I2C, CAN |
| Voltage - Isolation | 3000 VAC |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 2.25 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Description
General part information
ADuM1254 Series
The ADuM1254 offers two bidirectional, open-drain channels for applications, such as I2C, that require data to be transmitted in both directions on the same line. To prevent latch-up action, side 1 outputs comprise special buffers that regulate the logic-low voltage at 0.64V and the input logic-low threshold is at least 50mV lower than the output logic-low voltage. Side 2 features conventional buffers that do not regulate logic-low output voltage.The ADuM1254 features independent 2.25V to 5.5V supplies on both side 1 and side 2 of the isolator. The device operates up to 2MHz.The ADuM1254 provides a disturbance-free bus connection for hot-plug connections on side 2 by first precharging the bus pins and then monitoring the bus state for either an idle bus or detection of a I2C stop condition before connecting side 1 and side 2. The ADuM1254 is available in an 8-pin narrow-body SOIC package. The device is rated for operation at ambient temperatures of -40°C to +125°C.APPLICATIONSIsolated I2C/SMBus InterfaceBattery Management SystemsPower Over Ethernet (PoE)Motor Control Systems
Documents
Technical documentation and resources