BSI Certification according to Features. Manufacturer: Agilent(Hewlett-Packard). The HCPL//J and HCNW specify a minimum (tPLH – tPHL) of – μs over an operating temperature range of 0°C to°C, resulting in a maximum dead time Manufacturer. Short propagation delays for TTL and IPM applicationskV/μs minimum common mode transient immunity at VCM = V for TTL/load drive. Description. High CTR at T The HCPL and HCPL IPM optocouplers contain a GaAsP LED while the HCPL-J and HCNW contain an AlGaAs LED.