 Semiconductor Components Industries, LLC, 2011

October, 2011 − Rev. 3

1

Publication Order Number:

PACVGA105/D

PACVGA105

VGA Port Companion Circuit

Product Description

The PACVGA105 incorporates 7 channels of ESD protection for

signal lines commonly found in a VGA port for PCs. ESD protection is

implemented with current steering diodes designed to safely handle

the high peak surge currents associated with the IEC−1000−4−2

Level−4 ESD Protection Standard (8 kV contact discharge). When

the channels are subjected to an electrostatic discharge, the ESD

current pulse is diverted via the protection diodes into the positive

supply rails or ground where they may be safely dissipated.

The upper ESD diodes for the R, G and B channels are connected to

controller ICs with low voltage supplies. The remaining channels are

and B channels are also connected to a dedicated ground pin (GNDA)

to minimize crosstalk due to common ground impedance.

Two non−inverting buffers are also included in this IC for buffering

the HSYNC and VSYNC signals from the graphics controller IC.

These buffers will accept TTL input levels and convert them to CMOS

a nominal 60

W output impedance to match the characteristic

impedance of the HSYNC and VSYNC lines of the video cables

typically used. The inputs of these drivers also have high impedance

pull−ups (50 k

DDC_CLOCK and DDC_DATA channels have 1.8 k

W resistors

Features

IEC−1000−4−2 Level−4 ESD Requirements (8 kV Contact

Discharge)

Less than 5 pF Typical

VSYNC Lines

Facilitate Operation with Sub−Micron Graphics Controller ICs

and VSYNC Inputs

DDC_DATA Lines

Applications

Interfaces

http://onsemi.com

MARKING DIAGRAM

Device

Package

ORDERING INFORMATION

PACVGA105QR

QSOP16

(Pb−Free)

2500/Tape & Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

QSOP16

QR SUFFIX

CASE 492

PACVGA105QR = Specific Device Code

YY

= Year

WW

= Work Week

G

= Pb−Free Package

PACVGA

105QR

YYWWG