INPUT-OUTPUT CELL OF CMOS GATE ARRAY

摘要

The CMOS gate array including input-output terminals at the outer sides of the master slice(1) prevents the electrostatic discharge by employing the pull-up/pull-down transistors(24,25). The input/output terminal has the bonding pad(27) and the poly resistor(26) surrounded by the guide ring(29) and the N-channel MOS transistors(20) surrouned by p+ guide ring(28) and P-channel MOS transistors(21) surrounded by the N+guide ring(29).