Overview
The ISO7641FCDWR is a low-power, quad-channel digital isolator produced by Texas Instruments. This device is designed to provide galvanic isolation up to 4242 VPK per VDE, making it suitable for applications requiring high isolation and noise immunity. The ISO7641FCDWR features four isolation channels, with three operating in the forward direction and one in the reverse direction. It is part of the ISO76x1F series, which includes both M-Grade and C-Grade devices, catering to different speed and power requirements.
Key Specifications
| Parameter | Condition | M-Grade | C-Grade |
|---|---|---|---|
| Number of Channels | - | 4 (3 forward, 1 reverse) | 4 (3 forward, 1 reverse) |
| Supply Voltage | - | 2.7 V to 5.5 V | 3 V to 5.5 V |
| Data Rate | - | Up to 150 Mbps | Up to 25 Mbps |
| Input Threshold Voltage | - | 0 to 0.8 V (Low), 2 to 5.5 V (High) | 0 to 0.8 V (Low), 2 to 5.5 V (High) |
| Output Voltage | IOH = –4 mA | VCCO – 0.8 to 4.8 V | VCCO – 0.8 to 4.7 V |
| Common-Mode Transient Immunity | - | 25 to 75 kV/μs | 25 to 75 kV/μs |
| Junction Temperature | - | –40°C to 125°C | –40°C to 125°C |
| Package | - | SOIC (16-pin) | SOIC (16-pin) |
Key Features
- Galvanic Isolation: Up to 4242 VPK per VDE, providing high isolation and noise immunity.
- Channel Configuration: Four isolation channels with three operating in the forward direction and one in the reverse direction.
- Speed Grades: Available in M-Grade (up to 150 Mbps) and C-Grade (up to 25 Mbps) for different application needs.
- Low Power Consumption: C-Grade devices are optimized for low power consumption, making them suitable for battery-powered applications.
- Integrated Filters: C-Grade devices include integrated filters to suppress input noise pulses of less than 6 ns duration.
- TTL Input Thresholds: Compatible with TTL logic levels and 5-V tolerant inputs when supplied from 3.3-V or 2.7-V supplies.
- Fail-Safe Operation: Output defaults to a low state in fail-safe conditions.
Applications
- Industrial Fieldbus: Suitable for Profibus, Modbus, and DeviceNet™ data buses.
- Servo Control Interface: Used in servo control systems for precise and isolated communication.
- Motor Control: Applied in motor control systems to ensure isolated and reliable signal transmission.
- Power Supplies: Used to isolate noise currents in power supply circuits.
- Battery Packs: Ideal for battery-powered systems requiring low power consumption and high isolation.
Q & A
- What is the maximum isolation voltage of the ISO7641FCDWR?
The ISO7641FCDWR provides galvanic isolation up to 4242 VPK per VDE.
- How many channels does the ISO7641FCDWR have?
The device has four isolation channels, with three operating in the forward direction and one in the reverse direction.
- What are the different speed grades available for the ISO7641FCDWR?
The device is available in M-Grade (up to 150 Mbps) and C-Grade (up to 25 Mbps).
- What is the typical supply voltage range for the ISO7641FCDWR?
The supply voltage range is from 2.7 V to 5.5 V for M-Grade and 3 V to 5.5 V for C-Grade.
- Does the ISO7641FCDWR have integrated filters for noise suppression?
- What are the typical applications of the ISO7641FCDWR?
The device is used in industrial fieldbus, servo control interfaces, motor control, power supplies, and battery packs.
- What is the package type of the ISO7641FCDWR?
The device is packaged in a 16-pin SOIC.
- What is the junction temperature range for the ISO7641FCDWR?
The junction temperature range is from –40°C to 125°C.
- Is the ISO7641FCDWR 5-V tolerant?
- What happens to the output in fail-safe conditions?
The output defaults to a low state in fail-safe conditions.
