Power Sequencing the MAX14885E VGA Crossover Switch

The MAX14885E, a fully integrated low-capacitance VGA dual-graphics crossover switch, connects a VGA source to a VGA monitor. This applicaTIon note explains the proper sequencing of the MAX14885E’s two power supplies, VCC and VL, on power-up. 

 

IntroducTIon The MAX14885E, a 2:2 VGA switch, connects a VGA source to a VGA monitor. To ease direct connecTIon to graphics controllers or the ASIC, the MAX14885E has two supplies: VCC, a 5V ±5% supply, drives the VGA side interface; and the VL supply sets the logic switching thresholds on the digital input pins (EN, S00, S01, S10, S11, SHA, SHB, SVA, and SVB). This applicaTIon note documents the proper sequencing of the VCC and VL power supplies on power-up.