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ISO7740 ACTIVE Robust EMC, quad-channel, 4/0, reinforced digital isolator Pin-to-pin upgrade with higher isolation, stronger CMTI, wider supply range and better immunity

Product details

Integrated isolated power No Number of channels (#) 4 Forward/reverse channels 4/0 Isolation rating (Vrms) 2500 Data rate (Max) (Mbps) 150 Rating Catalog Surge voltage capability (Vpk) 4000 Current consumption per channel (DC) (Typ) (mA) 2.5 Operating temperature range (C) -40 to 125 Default output High Supply voltage (Max) (V) 5 Supply voltage (Min) (V) 3.3 Propagation delay (Typ) (ns) 19
Integrated isolated power No Number of channels (#) 4 Forward/reverse channels 4/0 Isolation rating (Vrms) 2500 Data rate (Max) (Mbps) 150 Rating Catalog Surge voltage capability (Vpk) 4000 Current consumption per channel (DC) (Typ) (mA) 2.5 Operating temperature range (C) -40 to 125 Default output High Supply voltage (Max) (V) 5 Supply voltage (Min) (V) 3.3 Propagation delay (Typ) (ns) 19
SOIC (DW) 16 77 mm² 7.52 x 10.28
  • 25 and 150-Mbps Signaling Rate Options
    • Low Channel-to-Channel Output Skew;
      1 ns Maximum
    • Low Pulse-Width Distortion (PWD);
      2 ns Maximum
    • Low Jitter Content; 1 ns Typ at 150 Mbps
  • Selectable Default Output (ISO7240CF)
  • > 25-Year Life at Rated Working Voltage
    (see High-Voltage Lifetime of the ISO72x Family of Digital Isolators and Isolation Capacitor Lifetime Projection)
  • 4-kV ESD Protection
  • Operates With 3.3-V or 5-V Supplies
  • High Electromagnetic Immunity
    (see ISO72x Digital Isolator Magnetic-Field Immunity)
  • –40°C to +125°C Operating Temperature Range
  • Safety-Related Certifications:
    • VDE 4000 VPK Basic Insulation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
    • 2.5 kVRMS Insulation for 1 minute per UL 1577
    • CSA Component Acceptance Notice #5A and IEC 60950-1 End Equipment Standard
  • 25 and 150-Mbps Signaling Rate Options
    • Low Channel-to-Channel Output Skew;
      1 ns Maximum
    • Low Pulse-Width Distortion (PWD);
      2 ns Maximum
    • Low Jitter Content; 1 ns Typ at 150 Mbps
  • Selectable Default Output (ISO7240CF)
  • > 25-Year Life at Rated Working Voltage
    (see High-Voltage Lifetime of the ISO72x Family of Digital Isolators and Isolation Capacitor Lifetime Projection)
  • 4-kV ESD Protection
  • Operates With 3.3-V or 5-V Supplies
  • High Electromagnetic Immunity
    (see ISO72x Digital Isolator Magnetic-Field Immunity)
  • –40°C to +125°C Operating Temperature Range
  • Safety-Related Certifications:
    • VDE 4000 VPK Basic Insulation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
    • 2.5 kVRMS Insulation for 1 minute per UL 1577
    • CSA Component Acceptance Notice #5A and IEC 60950-1 End Equipment Standard

The ISO7240x, ISO7241x, and ISO7242x devices are quad-channel digital isolators with multiple channel configurations and output-enable functions. These devices have logic-input and logic-output buffers separated by Texas Instrument’s silicon-dioxide (SiO2) isolation barrier. Used in conjunction with isolated power supplies, these devices help block high voltage, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry.

The ISO7240x family of devices has all four channels in the same direction. The ISO7241x family of devices has three channels in the same direction and one channel in the opposition direction. The ISO7242x family of devices has two channels in each direction.

The devices with the C suffix (C option) have TTL input thresholds and a noise-filter at the input that prevents transient pulses from being passed to the output of the device. The devices with the M suffix (M option) have CMOS VCC/2 input thresholds and do not have the input noise filter or the additional propagation delay.

The ISO7240CF device has an input disable function on pin 7, and a selectable high or low failsafe-output function with the CTRL pin (pin 10). The failsafe output is a logic high when a logic high is placed on the CTRL pin or it is left unconnected. If a logic low signal is applied to the CTRL pin, the failsafe output becomes a logic-low output state. The input disable function of the ISO7240CF device prevents data from being passed across the isolation barrier to the output. When the inputs are disabled or VCC1 is powered down, the outputs are set by the CTRL pin.

These devices can be powered from 3.3-V or 5-V supplies on either side, in any combination. The signal input pins are 5-V tolerant regardless of the voltage supply level that is used.

These devices are characterized for operation over the ambient temperature range of –40°C to +125°C.

The ISO7240x, ISO7241x, and ISO7242x devices are quad-channel digital isolators with multiple channel configurations and output-enable functions. These devices have logic-input and logic-output buffers separated by Texas Instrument’s silicon-dioxide (SiO2) isolation barrier. Used in conjunction with isolated power supplies, these devices help block high voltage, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry.

The ISO7240x family of devices has all four channels in the same direction. The ISO7241x family of devices has three channels in the same direction and one channel in the opposition direction. The ISO7242x family of devices has two channels in each direction.

The devices with the C suffix (C option) have TTL input thresholds and a noise-filter at the input that prevents transient pulses from being passed to the output of the device. The devices with the M suffix (M option) have CMOS VCC/2 input thresholds and do not have the input noise filter or the additional propagation delay.

The ISO7240CF device has an input disable function on pin 7, and a selectable high or low failsafe-output function with the CTRL pin (pin 10). The failsafe output is a logic high when a logic high is placed on the CTRL pin or it is left unconnected. If a logic low signal is applied to the CTRL pin, the failsafe output becomes a logic-low output state. The input disable function of the ISO7240CF device prevents data from being passed across the isolation barrier to the output. When the inputs are disabled or VCC1 is powered down, the outputs are set by the CTRL pin.

These devices can be powered from 3.3-V or 5-V supplies on either side, in any combination. The signal input pins are 5-V tolerant regardless of the voltage supply level that is used.

These devices are characterized for operation over the ambient temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet ISO724x High-Speed, Quad-Channel Digital Isolators datasheet (Rev. T) 19 Apr 2017
Certificate VDE Certificate for Basic Isolation for DIN VDE V 0884-11:2017-01 (Rev. S) 03 Aug 2021
Application note Digital Isolator Design Guide (Rev. C) 12 Jul 2021
Certificate CSA Certification (Rev. Q) 14 Jun 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen 11 Jun 2021
User guide Universal Digital Isolator Evaluation Module 04 Mar 2021
Certificate UL Certification (Rev. O) 03 Feb 2021
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. A) 07 Dec 2020
Technical article How to select the right digital isolator for your design 21 Oct 2020
Technical article Why signal isolation matters in 48-V HEV/EV systems 20 Nov 2019
Technical article Staying on budget: How digital isolators are transforming field transmitters 24 May 2019
Technical article What are isolated digital inputs? 08 Mar 2019
Application note Considerations for Selecting Digital Isolators 24 Jul 2018
User guide Triple- and Quad-Channel Digital Isolator EVM (Rev. A) 27 Sep 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DIGI-ISO-EVM — Universal digital isolator evaluation module

DIGI-ISO-EVM is an evaluation module (EVM) used to evaluate any of the TI single-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin narrow-body SOIC (D), 8-pin wide-body SOIC (DWV), 16-pin wide-body SOIC (DW), 16-pin ultra (...)

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Evaluation board

ISO723X724XEVM — ISO723X724XEVM Evaluation Module

The ISO723X724X evaluation module (EVM) supports the rapid, parametric evaluation of the Triple and Quad Digital Isolators. The EVM will be delivered with an ISO7241C soldered on the board. If another device is desired, please order samples from www.ti.com. If you do not have the capability to (...)

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Simulation model

ISO7240 IBIS Model (Rev. C)

SLLC335C.ZIP (13 KB) - IBIS Model
Package Pins Download
SOIC (DW) 16 View options

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