ISO7231C-Q1 - Automotive Catalog Triple Channel, 2/1, 25Mbps, Digital Isolator

The ISO7230C-Q1 and ISO7231C-Q1 are triple-channel digital isolators each with multiple channel configurations and output enable functions. 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, isolate grounds, and prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.

The ISO7230C-Q1 triple-channel device has all three channels in the same direction while the ISO7231C-Q1 has two channels in one direction and one channel in opposition. These devices have an active-high output enable that when driven to a low level, places the output in a high-impedance state.

The ISO7230C-Q1 and ISO7231C-Q1 have TTL input thresholds and a noise-filter at the input that prevents transient pulses of up to 2 ns in duration from being passed to the output of the device.

In each device, a periodic update pulse is sent across the isolation barrier to ensure the proper dc level of the output. If this dc-refresh pulse is not received, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit drives the output to a logic high state. (Contact TI for a logic low failsafe option).

These devices require two supply voltages of 3.3-V, 5-V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply and all outputs are 4-mA CMOS. These devices are characterized for operation over the ambient temperature range of –40°C to 125°C.

• Qualified for Automotive Applications
• 25 and 150-Mbps Signaling Rate Options
  • Low Channel-to-Channel Output Skew
  • Low Pulse-Width Distortion (PWD)
  • Low Jitter Content; 1 ns Typ at 150 Mbps
• Typical 25-Year Life at Rated Working Voltage
  (See Application Note SLLA197 and Figure 14)
• 4000-V_peak Isolation, 560-V_peak V_IORM
  • UL 1577, IEC 60747-5-2 (VDE 0884, Rev 2),
    IE 61010-1, IEC 60950-1 and CSA Approved
• 4 kV ESD Protection
• Operate With 3.3-V or 5-V Supplies
• High Electromagnetic Immunity
  (See Application Note SLLA181)
• –40°C to 125°C Operating Range