The component arrives across multiple surface-mount and through-hole packaging form-factors:
: No internal electrical connection. Leave isolated on the PCB layout. a1458 optocoupler datasheet
In noisy industrial environments, transient voltage spikes are common. The A1458 datasheet highlights its high . CMR is a measure of the optocoupler's ability to ignore large, rapidly changing voltages that appear simultaneously on both its input and output grounds. Some variants boast a CMR of 50,000 V/μs, ensuring stable operation even in electrically noisy surroundings. The A1458 datasheet highlights its high
Inside the package, pin 1 connects to the LED’s anode, pin 2 to its cathode. The phototransistor sits with its collector on pin 4 and emitter on pin 3. There is no base pin exposed; base current is generated solely by illumination. Inside the package, pin 1 connects to the
Because the A1458 combines high noise immunity with fast switching times, it is predominantly used in demanding industrial systems: HCPL-1458/ A1458 - Broadcom - Price, Inventory & Datasheets