ISO7240CFQDWRQ1

ISO 7240 is a family of international standards for fire detection and alarm systems. It specifies general requirements for the design, installation, commissioning, operation and maintenance of life-safety fire alarms, aiming for reliability and interoperability across manufacturers and countries. The series covers system architecture, detectors and sensors, manual initiating devices, control/indicating equipment, notification devices, power supplies, wiring, interfaces with other systems, and performance/testing criteria.
In practice, ISO 7240 guides how to select, design, and verify fire-alarm solutions, often harmonizing with regional standards (e.g., EN 54). It supports consistent safety, performance, and maintenance across products and installers.
ISO7240CFQDWRQ1 looks like a vendor-specific part number rather than a published ISO standard. If you’re dealing with a device labeled that way, consult the supplier’s datasheet and map the product to the relevant ISO 7240 parts to confirm compliance and interoperability.

Equivalent parts (1-channel digital isolators with similar 3.3/5 V operation and ~5 kV isolation) include:
- Analog Devices ADuM1250 / ADuM1251
- Silicon Labs Si86xx family (single-channel digital isolators)
Note: exact cross-reference depends on voltage, isolation, and package; check TI’s cross-ref for ISO7240C (FQDWRQ1) and match specs (channel count, voltage, isolation).

ISO7240CFQDWRQ1 features:
- Dual-channel digital isolator with galvanic isolation between primary and secondary sides
- 5 kV RMS isolation rating
- Independent VCCA and VCCB supplies (typically 3.0–5.5 V)
- TTL/CMOS-compatible inputs; Schmitt-trigger option on inputs
- Fast propagation delay with data rates in the Mbps range
- Low power consumption on both sides
- Fail-safe outputs (default to a known state on power-down)
- Robust ESD/EMI protection; wide operating temperature (industrial/automotive suitable)
- Small 8-pin QFN package (QDWRQ1) with optional exposed pad

Pin count: 16 pins (SSOP/VSSOP-16 package).
Function: Quad-channel digital isolator (galvanic isolation between two power domains). It provides four unidirectional data paths across an isolation barrier, with separate supply pins for each side (VDD1/GND1 and VDD2/GND2).

- Manufacturer: Texas Instruments Incorporated (TI)
- What kind of company: American multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits; one of the largest global suppliers of analog semiconductors.

ISO7240CFQDWRQ1 is a 2-channel digital isolator for I2C/SMBus/PMBus interfaces (galvanic isolation between two voltage domains). Typical applications include:
- Industrial automation and process control (isolated MCU I2C buses)
- Power electronics and smart power meters
- Medical equipment requiring safe isolation of sensors/controls
- Automotive electronics (ECU-to-sensor isolation)
- Building automation, HVAC, and consumer electronics with isolated sensing
- Data acquisition systems needing EMI/noise protection on I2C lines
In short: any system needing isolated I2C communications across safety/voltage barriers.

It’s in an 8-pin WQFN package (3.0 × 3.0 mm), RoHS-compliant.