Overview
The ISO7331FCDWR is a robust, low-power, triple-channel digital isolator produced by Texas Instruments. This device is designed to provide high electromagnetic compatibility (EMC) and is suitable for harsh industrial environments. It operates from 3.3 V and 5 V supply levels and features integrated noise filters to handle short noise pulses. The ISO7331FCDWR is part of the ISO733x family, which includes devices with various configurations to meet different application needs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC1, VCC2) | -0.5 | 6 | V | |
| Input Voltage (INx, OUTx, ENx) | -0.5 | VCC+0.5 | V | |
| Output Current (IO) | ±15 | mA | ||
| Junction Temperature (TJ) | 150 | °C | ||
| Propagation Delay Time (tPLH, tPHL) | 20 | 32 | 58 | ns |
| Common-Mode Transient Immunity (CMTI) | 25 | 70 | kV/μs | |
| Supply Current (ICC1, ICC2) at 5V, 25 Mbps | 4.3 | 6.2 | 7.8 | mA |
| Supply Current (ICC1, ICC2) at 3.3V, 25 Mbps | 2.9 | 4.2 | 5.2 | mA |
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- Robust EMC performance with high common-mode transient immunity (CMTI) of up to 70 kV/μs.
- Low power consumption with supply currents as low as 0.5 mA per channel at 3.3 V and 1.1 mA per channel at 5 V for DC inputs.
- Operates from 3.3 V and 5 V supply levels with TTL input thresholds and level translation capabilities.
- Integrated noise filters for handling short noise pulses in harsh industrial environments.
- Fail-safe output options with default low or high outputs in case of input power or signal loss.
- Wide temperature range of -40°C to 125°C.
Applications
- Industrial automation and control systems.
- RS-485 and other data bus interfaces.
- Servo control and motor control systems.
- Power supplies and battery packs.
- ModBus and DeviceNet data buses.
Q & A
- What is the primary function of the ISO7331FCDWR?
The ISO7331FCDWR is a triple-channel digital isolator designed to provide electrical isolation between input and output signals while maintaining high data integrity and low power consumption. - What are the supported supply voltage levels for the ISO7331FCDWR?
The device operates from 3.3 V and 5 V supply levels. - What is the typical propagation delay time for the ISO7331FCDWR?
The typical propagation delay time is 32 ns. - What is the common-mode transient immunity (CMTI) of the ISO7331FCDWR?
The CMTI is up to 70 kV/μs. - What are the fail-safe output options for the ISO7331FCDWR?
The device offers fail-safe output options with default low or high outputs in case of input power or signal loss. - What is the operating temperature range of the ISO7331FCDWR?
The operating temperature range is -40°C to 125°C. - What types of applications is the ISO7331FCDWR suitable for?
The device is suitable for industrial automation, RS-485 and other data bus interfaces, servo and motor control systems, power supplies, and battery packs. - How does the ISO7331FCDWR handle noise in harsh industrial environments?
The device features integrated noise filters to handle short noise pulses in harsh industrial environments. - What is the maximum output current of the ISO7331FCDWR?
The maximum output current is ±15 mA. - What is the junction temperature limit for the ISO7331FCDWR?
The junction temperature limit is 150°C.
