ISO7142CCDBQR

Overview

The ISO7142CCDBQR is a low-power, quad-channel digital isolator from Texas Instruments, housed in a 16-pin SSOP package. It operates with a unidirectional signal flow and utilizes capacitive coupling for isolation. The device supports data rates up to 50 Mb/s with 5-V supplies and features an integrated noise filter for robust design. It functions within a supply voltage range of 2.7 V to 5 V, drawing a typical operating current of 2.5 mA. Key electrical parameters include a propagation delay of 21 ns, an insulation voltage of 2500 Vrms, and a common-mode transient immunity of 25 kV/µs. The component is rated for operation between -55°C and +125°C.

Feature Summary

• Quad-channel architecture providing four independent isolation channels in a single package
• Integrated noise filter designed to enhance robustness against electromagnetic interference
• Low-power consumption characteristics suitable for energy-efficient system designs
• Capacitive coupling technology ensuring reliable signal transmission across isolation barriers

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced or basic isolation barriers
• Power metering applications involving high-voltage sensing
• Inverter drives and motor control circuits

Procurement Notes

Verify the specific suffix 'QR' indicates the reel packaging configuration when ordering. Confirm that the SSOP-16 package width matches your PCB footprint constraints. Ensure the unidirectional polarity aligns with your circuit's signal flow requirements. Check for RoHS compliance status if restricted substances are a concern. Validate the operating temperature range against your environmental conditions.

Selection Notes

Select this component when four isolated channels are required in a compact form factor. It is suitable for applications prioritizing low power consumption over higher data rates. Consider the 2500 Vrms isolation rating for standard industrial environments. The 50 Mbps speed is adequate for most communication protocols like SPI, I2C, and UART. Evaluate the 21 ns propagation delay for timing-sensitive designs.

Part Context

This part belongs to the ISO7142C series of low-power digital isolators. It shares the same pinout and footprint as the ISO7140CCDBQR but offers four channels instead of two. The series is designed to replace bulky magnetic isolators in space-constrained applications. It complements higher-speed variants like the ISO7742 family while focusing on power efficiency.

Replacement Considerations

The ISO7140CCDBQR serves as a dual-channel alternative with identical pinout and specifications for two of the channels. Verify channel count requirements before substitution. No other direct cross-references are publicly confirmed for this specific quad-channel variant.