ISO7242C

ACTIVE

Quad-channel, 2/2, 25-Mbps digital isolator

A newer version of this product is available
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Exact equivalent in functionality and parametrics to the compared device:
ISO7742 ACTIVE Robust EMC, quad-channel, 2/2, reinforced digital isolator Pin-to-pin upgrade with higher isolation, stronger CMTI, wider supply range and better immunity
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Product details

Parameters

Integrated isolated power No Number of channels (#) 4 Forward/reverse channels 2/2 Isolation rating (Vrms) 2500 Data rate (Max) (Mbps) 25 Rating Catalog Surge voltage capability (Vpk) 4000 Current consumption per channel (DC) (Typ) (mA) 3 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) 35 open-in-new Find other Digital isolators

Package | Pins | Size

SOIC (DW) 16 77 mm² 7.52 x 10.28 open-in-new Find other Digital isolators

Features

  • 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

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Description

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 13
Type Title Date
* Datasheet ISO724x High-Speed, Quad-Channel Digital Isolators datasheet (Rev. T) Apr. 19, 2017
Technical articles How to select the right digital isolator for your design Oct. 21, 2020
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators Oct. 12, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
Technical articles Why signal isolation matters in 48-V HEV/EV systems Nov. 20, 2019
More literature CSA Certification (Rev. P) Nov. 19, 2019
More literature VDE certificate for basic isolation for DIN VDE V 0884-11:2017-01 (Rev. Q) Sep. 20, 2019
More literature UL Certification (Rev. N) Jul. 30, 2019
Technical articles Staying on budget: How digital isolators are transforming field transmitters May 24, 2019
Application note Digital Isolator Design Guide (Rev. B) Aug. 01, 2018
Application note 4Q 2011 Issue Analog Applications Journal Nov. 09, 2011
Application note Extending the SPI bus for long-distance communication Nov. 09, 2011
User guide Triple- and Quad-Channel Digital Isolator EVM (Rev. A) Sep. 27, 2011

Design & development

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

Hardware development

EVALUATION BOARD Download
49
Description

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 (...)

Features
  • Low Channel-to-Channel Output Skew; 1ns Maximum
  • Low Pulse-Width Distortion (PWD); 2 ns Maximum
  • Low Jitter Content; 1 ns Typ at 150 Mbps
  • Typical 25-Year Life at Rated Working Voltage (see Application note SLLA197 and Figure 10)
  • 4000-V peak Isolation; 560-V peak V IROM
    • UL 1577, IEC 60747-5-2 (VDE 0884, Rev (...)
DEVELOPMENT KIT Download
749
Description
This reference design implements single phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is voltage source mode using an output LC filter, this control mode is typically used in Uninterrupted (...)
Features
  • powerSUITE supported Voltage Source Inverter and Grid Connected Inverter Design
  • Peak 98% efficiency in Voltage Source Mode and <4% THD in case of non linear loads
  • Input 380V DC, Output 220Vrms 50Hz or 110Vrms 60Hz and 600VA Max
  • Hardware Files are in DigitalPower SDK at solutions\tidm_hv_1ph_dcac

Design tools & simulation

SIMULATION MODEL Download
SLLC347D.ZIP (13 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
Peak current-mode controlled phase-shifted full-bridge reference design using C2000™ real-time MCU
TIDM-02000 — This design implements a digitally peak current mode controlled (PCMC) phase shifted full bridge (PSFB) DC-DC converter which converts a 400-V DC input to a regulated 12-V DC output. Novel PCMC waveform generation based on type-4 PWM and internal slope compensation, and simple PCMC implementation (...)
document-generic Schematic
REFERENCE DESIGNS Download
Single-Phase Inverter Reference Design With Voltage Source and Grid Connected Modes
TIDM-HV-1PH-DCAC This reference design implements single-phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is the voltage source mode using an output LC filter. This control mode is typically used in (...)
document-generic Schematic
REFERENCE DESIGNS Download
Bidirectional 400-V/12-V DC/DC Converter Reference Design
TIDM-BIDIR-400-12 The Bidirectional 400V-12V DC/DC Converter Reference Design is a microcontroller-based implementation of an isolated bi-directional DC-DC converter.  A phase shifted full-bridge (PSFB) with synchronous rectification controls power flow from a 400V bus/battery to the 12V battery in step-down (...)
document-generic Schematic
REFERENCE DESIGNS Download
Multi-String RGB LED Lighting Driver based on C2000™ MCU
TIDM-RGB-LED Ideal for automotive, entertainment, retail, and decorative lighting applications, the Multi-String RGB LED Lighting design implements independent multi-string LED control with dimming and color mixing. The LED driver consists of 8 independent and digitally controlled DC/DC power converters driving (...)
document-generic Schematic
REFERENCE DESIGNS Download
Multi-String LED Lighting Driver based on C2000™ MCU Reference Design
TIDM-DCDC-LED Ideal for automotive, outdoor, entertainment, retail, and decorative lighting applications, the Multi-String LED Lighting design implements independent multi-string LED lighting with high resolution dimming. The LED driver consists of a microcontroller-controlled DC/DC Sepic Power stage and eight (...)
document-generic Schematic
REFERENCE DESIGNS Download
AC-mains LED Lighting with DALI DMX512 & Power Line Communications Reference Design
TIDM-AC-LED-COM Ideal for outdoor, entertainment, and industrial lighting applications, this LED Lighting design provides high power and high efficiency illumination with built-in communications networking. The lighting unit consists of a 250W universal AC-input LED driver power supply and a demonstrational (...)
document-generic Schematic
REFERENCE DESIGNS Download
C2000™ Solar DC/DC Converter with Maximum Power Point Tracking (MPPT)
TIDM-SOLAR-DCDC This design is a digitally-controlled, solar DC/DC converter with maximum power point tracking (MPPT), for use in central or string solar inverters. It is a companion to the TI Design TIDM-SOLAR-ONEPHINV, a grid-tied, single phase, DC/AC inverter. Together, the TIDM-SOLAR-DCDC and the (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options

Ordering & quality

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