4N55, 5962-87679, HCPL-553x, HCPL-653x, HCPL-257K, HCPL-655x, 5962-90854, HCPL-550x
Multiple channel devices available.
Truth Table (Positive Logic)
NOTE The connection of a 0.1 μF bypass capacitor
between VCC and GND is recommended.
Each channel contains a GaAsP light emitting diode that is
optically coupled to an integrated photon detector. Separate
connections for the photodiodes and output transistor
collectors improve the speed up to one-hundred times that of
a conventional phototransistor optocoupler by reducing the
These devices are suitable for wide-bandwidth analog
applications, as well as for interfacing TTL to LSTTL or CMOS.
Current Transfer Ratio (CTR) is 9% minimum at IF = 16 mA. The
18V VCC capability enables the designer to interface any TTL
family to CMOS. The availability of the base lead allows
optimized gain/bandwidth adjustment in analog applications.
The shallow depth of the IC photodiode provides better
radiation immunity than conventional phototransistor
Package styles for these parts are 8- and 16-pin DIP
through-hole (case outlines P and E, respectively), 16-pin DIP
flat pack (case outline F), and leadless ceramic chip carrier (case
outline 2). Devices may be purchased with a variety of lead
bend and plating options, see the selection guide table for
details. Standard Microcircuit Drawing (SMD) parts are
available for each package and lead style.
Because the same functional die (emitters and detectors) are
used for each channel of each device listed in this data sheet,
absolute maximum ratings, recommended operating
conditions, electrical specifications, and performance
characteristics shown in the figures are identical for all parts.
Occasional exceptions exist due to package variations and
limitations and are as noted. Additionally, the same package
assembly processes and materials are used in all devices. These
similarities give justification for the use of data obtained from
one part to represent other part’s performance for die related
reliability and certain limited radiation test results.