Follow these general guidelines when
designing the power supply:
- The power supply should be
designed to provide the operating conditions outlined in the recommended
operating conditions section in terms of DC voltage, AC noise, and start-up
ramp time.
- The SN75LVPE5421 does not require any special power supply filtering, such as
ferrite beads, provided that the recommended operating conditions are met. Only standard
supply decoupling is required. Typical supply decoupling consists of a 0.1 μF capacitor
per VCC pin, one 1.0 μF bulk capacitor per device, and one 10 μF bulk capacitor per
power bus that delivers power to one or more devices. The local decoupling (0.1 μF)
capacitors must be connected as close to the VCC pins as possible and with minimal path
to the device ground pad.