M
markp
Hi All,
I need a logic device (244 buffer in SOIC footprint) that is powered by
3.3V, and which when driving high will actively drive up to 3.3V, then go
high impedance to let a pull-up resistor continue to pull it up to 5V. In
other words, a 5V tolerant I/O device that does not actually clamp to 3.3V
when driving high. I've seen quite a few 5V I/O tolerant logic families, but
all I've seen so far only state up to 5V when tri-stated and 3.3V when
driving high. It's not clear whether LPT from Pericom will do this. Anyone
know of a logic family that can do this?
TIA,
Mark.
I need a logic device (244 buffer in SOIC footprint) that is powered by
3.3V, and which when driving high will actively drive up to 3.3V, then go
high impedance to let a pull-up resistor continue to pull it up to 5V. In
other words, a 5V tolerant I/O device that does not actually clamp to 3.3V
when driving high. I've seen quite a few 5V I/O tolerant logic families, but
all I've seen so far only state up to 5V when tri-stated and 3.3V when
driving high. It's not clear whether LPT from Pericom will do this. Anyone
know of a logic family that can do this?
TIA,
Mark.