Product details

Number of channels 4 Rating Automotive Forward/reverse channels 3 forward / 1 reverse Integrated isolated power No Isolation rating Functional Default output High, Low Data rate (max) (Mbps) 50 Protocols GPIO, PWM, SPI, UART CMTI (min) (V/µs) 150000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 1.71 Propagation delay time (typ) (µs) 0.011 Creepage (min) (mm) 3.7 Clearance (min) (mm) 3.7
Number of channels 4 Rating Automotive Forward/reverse channels 3 forward / 1 reverse Integrated isolated power No Isolation rating Functional Default output High, Low Data rate (max) (Mbps) 50 Protocols GPIO, PWM, SPI, UART CMTI (min) (V/µs) 150000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 1.71 Propagation delay time (typ) (µs) 0.011 Creepage (min) (mm) 3.7 Clearance (min) (mm) 3.7
SSOP (DBQ) 16 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified with the following results:
    • Device temperature Grade 1: –40°C to +125°C ambient operating temperature range
  • Up to 50Mbps data rate
  • Robust SiO2 isolation barrier
  • Functional Isolation (DBQ-16):
    • 400VRMS, 566VDC working voltage
    • 707VRMS, 1000VDC transient voltage (60s)
  • Wide temperature range: –40°C to 125°C
  • ±150kV/µs typical CMTI
  • Supply range: 1.71V to 5.5V
  • Default output high (ISO654x-Q1) and low (ISO654xF-Q1) options
  • 1.5mA per channel typical at 1Mbps and 3.3V (ISO6540-Q1)
  • Low propagation delay: 11ns typical at 3.3V
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • Low emissions
  • SSOP (DBQ-16) Package
  • AEC-Q100 qualified with the following results:
    • Device temperature Grade 1: –40°C to +125°C ambient operating temperature range
  • Up to 50Mbps data rate
  • Robust SiO2 isolation barrier
  • Functional Isolation (DBQ-16):
    • 400VRMS, 566VDC working voltage
    • 707VRMS, 1000VDC transient voltage (60s)
  • Wide temperature range: –40°C to 125°C
  • ±150kV/µs typical CMTI
  • Supply range: 1.71V to 5.5V
  • Default output high (ISO654x-Q1) and low (ISO654xF-Q1) options
  • 1.5mA per channel typical at 1Mbps and 3.3V (ISO6540-Q1)
  • Low propagation delay: 11ns typical at 3.3V
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • Low emissions
  • SSOP (DBQ-16) Package

The ISO654x-Q1 devices are general purpose functional isolators for cost sensitive, space constrained applications that require isolation for non- safety applications. The isolation barrier supports a working voltage of 400VRMS / 566VDC and transient over voltages of 707VRMS / 1000VDC .

The ISO654x-Q1 devices provide high EMC performance while isolating CMOS or LVCMOS digital I/Os. ISO654x-Q1 uses SiO2 as the isolation barrier. Each isolation channel has a logic input and output buffer separated by the insulation barrier. These devices come with enable pins that can be used to put the respective outputs in high impedance.

The ISO6540-Q1 and ISO6540F-Q1 devices have all channels in the forward direction. The ISO6541-Q1 and ISO6541F-Q1 devices have one reverse-direction channel. The ISO6542-Q1 and ISO6542F-Q1 devices have two reverse-direction channels.

In the event of input power or signal loss, the default output is high for devices without the suffix F and low for devices with the suffix F. See Device Functional Modes for further details.

These devices help prevent noise currents on GPIOs or data buses such as SPI, UART and CAN from causing data corruption or damaging sensitive circuitry. Through chip design and layout techniques, the electromagnetic compatibility of the devices have been significantly enhanced to ease system-level design.

The ISO654x-Q1 devices are general purpose functional isolators for cost sensitive, space constrained applications that require isolation for non- safety applications. The isolation barrier supports a working voltage of 400VRMS / 566VDC and transient over voltages of 707VRMS / 1000VDC .

The ISO654x-Q1 devices provide high EMC performance while isolating CMOS or LVCMOS digital I/Os. ISO654x-Q1 uses SiO2 as the isolation barrier. Each isolation channel has a logic input and output buffer separated by the insulation barrier. These devices come with enable pins that can be used to put the respective outputs in high impedance.

The ISO6540-Q1 and ISO6540F-Q1 devices have all channels in the forward direction. The ISO6541-Q1 and ISO6541F-Q1 devices have one reverse-direction channel. The ISO6542-Q1 and ISO6542F-Q1 devices have two reverse-direction channels.

In the event of input power or signal loss, the default output is high for devices without the suffix F and low for devices with the suffix F. See Device Functional Modes for further details.

These devices help prevent noise currents on GPIOs or data buses such as SPI, UART and CAN from causing data corruption or damaging sensitive circuitry. Through chip design and layout techniques, the electromagnetic compatibility of the devices have been significantly enhanced to ease system-level design.

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* Data sheet ISO654x-Q1 Automotive General Purpose Quad -Channel Functional Isolators datasheet PDF | HTML 14 Apr 2025

Design & development

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Evaluation board

ISO6521REUEVM — ISO6521 evaluation module for dual-channel functional isolator for digital signals

ISO6521REUEVM is an evaluation module (EVM) used to evaluate the dual-channel ISO6521 functional isolator in the 8-pin DFN package. The EVM has additional footprints that gives the user flexibility to add componenents to test a variety of common applications. The EVM also features multiple test (...)

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SSOP (DBQ) 16 Ultra Librarian

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