Texas Instruments ISOM8600 80V Normally-Open Switch

Texas Instruments ISOM8600 80V Normally-Open Switch comes with an opto-emulator input. The opto-emulator inputs control the back-to-back MOSFETs without requiring a power supply on the secondary side. The devices are pin-compatible and drop-in replaceable for many traditional optocouplers, allowing enhancement to industry-standard packages with no PCB redesign.

The ISOM8600 opto-emulator switch offers significant reliability and performance advantages compared to optocouplers, like wider temperature ranges and tight process controls resulting in small part-to-part variations. Since there is no aging effect to compensate for, the emulated diode-input stage consumes less power than optocouplers with LED aging. It requires higher bias currents over the device's lifetime. ISOM8600 switch output can be controlled by just 0.8mA current through anode/cathode pins over the device's lifetime, enabling system power savings.

The Texas Instruments ISOM8600 is offered in a small SO-4 package, supporting a 500V_RMS functional isolation. The device's high performance and reliability enable it to be used in applications such as building automation, factory automation, semiconductor testing, I/O modules in industrial controllers, and factory automation applications.

Features

Drop-in replacement and pin-to-pin upgrade to industry-standard photo relays
Single-channel, diode-emulator input
Single-pole, normally open, symmetrical 80V output switch
Primary-side current controlled switch, no additional isolated high voltage supply required for 80V switching
Ultra-low off-state leakage at V_OFF = 70V
- < 250nA at an operating temperature of 25°C
- < 1µA across operating temperatures of –55°C to 125°C

Fast response time of 10µs (typical) at I_F = 5mA, V_CC = 20V, R_L = 200Ω, C_L = 50pF
Ultra-low input trigger current of 800µA (at 25°C)
Functional isolation of 500V_RMS working voltage
Supports industrial temperature range of –55°C to 125°C
Small SO-4 package