What is the recommended pull-up resistor at /OE pin to pull it up to VCC during power-up to avoid potential glitch? How to calculate/estimate pull-up resistor?
- VCC = 3.3V
- 4x SN74HC595 sharing the same /OE bus, pulling-up by the same resistor to VCC.
- Currently using 10kohm and observed output glitch during VCC power up.
I believe this is due to during power-up, /OE is slightly slower than VCC, and momentarily /OE is < 0.7*VCC, causing /OE is logic '0' for a short period time during power, resulting in unexpected output observed.