OptoCoupler Buffer-OUT 4-CH 16-Pin SOIC Rail

The ISO7240 is quad-channel digital isolators with multiple channel configurations withoutput enable function. These devices have logic input and output buffers separated by TI’s silicon dioxide (SiO2)isolation barrier. Used in conjunction with isolated power supplies, these devices block high voltage, isolategrounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitivecircuitry. The ISO7240 has all four channels in the same direction. The A and C option devices 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 M option devices have CMOS Vcc/2 input thresholdsand do not have the input noise-filter or the additional propagation delay. A periodic update pulse is sent across the barrier to ensure the proper dc level of the output. If this dc-refreshpulse is not received, the input is assumed to be unpowered or not being actively driven, and the failsafe circuitdrives the output to a logic high state. (Contact TI for a logic low failsafe option). These devices may be powered from either 3.3-V or 5-V supplies on either side in any 3.3-V / 3.3-V, 5-V / 5-V,5-V / 3.3-V, or 3.3-V / 5-V combination. Note that the signal input pins are 5-V tolerant regardless of the voltagesupply level being used. These devices are characterized for operation over the ambient temperature range of –40°C to 125°C.

• 25 and 150-Mbps Signaling Rate Options
  • Low Channel-to-Channel Output Skew; 1 ns Max
  • Low Pulse-Width Distortion (PWD); 2 ns Max
  • Low Jitter Content; 1 ns Typ at 150 Mbps
• Selectable Default Output (ISO7240CF)
• > 25-Year Life at Rated Working Voltage (See Application Note SLLA197 and Figure 16)
• 4 kV ESD Protection
• Operates With 3.3-V or 5-V Supplies
• High Electromagnetic Immunity (See Application Report SLLA181)
• -40°C to 125°C Operating Temperature Range
• Safety and Regulatory Approvals:
  • VDE 4000 VPK Basic Isolation per DIN EN 60747-5-5 (VDE 0884-5) & DIN EN 61010-1
  • 2.5 kVRMS Isolation for 1 minute per UL 1577
  • CSA Component Acceptance Notice #5A & IEC 60950-1 End Equipment Standard