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CD74HC4050: What is the input current rating for CD74HC4050 device.

Colin Gillmor
Mastermind 25570 points
Part Number: CD74HC4050
Other Parts Discussed in Thread: UCC28951

Hi

I have a customer who wants to power the CD74HC4050M96 device from 3.3V and drive the inputs from sources capable of 200mA (the sources are the OUTx signals from a UCC28951 SMPS controller). The signals are 50% duty cycle square waves and will run at 200kHz.

The CD74HC4050M96 is being used as a level shifter - 12V to 3.3V.  Is this something that the device can handle or should I recommend adding current limiting resistors -and if so - what would be a reasonable current  or resistance value?

Thanks

Colin