HCPL-M454-500E

The Broadcom® HCPL-M454 is similar to Broadcom’s other
high speed transistor output optocouplers, but with shorter
propagation delays and higher CTR. The HCPL-M454 also
has a guaranteed propagation delay difference (tPLH –tPHL).
These features make the HCPL-M454 an excellent solu tion
to IPM inverter dead time and other switching problems.
The HCPL-M454 CTR, propagation delays, and CMR are
specified both for TTL load and drive conditions and for IPM
(Intelligent Power Module) load and drive conditions.
specifications, and typical performance plots for both TTL
and IPM conditions are provided for ease of application.
This diode-transistor optocoupler uses an insulating layer
between the light emitting diode and an integrated photon
detector to provide electrical insulation between input and
output. Separate connections for the photo-diode bias and
output transistor collector increase the speed up to a
hundred times over that of a conventional photo-transistor
coupler by reducing the base-collector capacitance.