05-08-2018, 11:53 AM
74HC4052 is not always a replacement for 4052B. The original 4000 series part is rated up to +/-15V supply (18V in extremis). The 74HC part is only rated to +/-6V. The HC parts also switch much faster and have lower "on" resistance.
If the supply to pin 16 of your part is less than +6V (and less than -6V to pin 7) then your HC4052 should be OK. Otherwise it's likely to have a short life.
NB: The 4051/2/3 and HC/HCT parts all have a -ve supply pin (pin 7) that's often connected to 0V. It's useful when using them to switch bipolar signals with ordinary logic controls.
If the supply to pin 16 of your part is less than +6V (and less than -6V to pin 7) then your HC4052 should be OK. Otherwise it's likely to have a short life.
NB: The 4051/2/3 and HC/HCT parts all have a -ve supply pin (pin 7) that's often connected to 0V. It's useful when using them to switch bipolar signals with ordinary logic controls.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
