| 摘要 |
PURPOSE:To prevent the breakdown of a CMOS semiconductor device by forming a resistor for preventing floating in a pellet for the semiconductor device or in a package. CONSTITUTION:Input signals such as clock signals are transmitted over an internal circuit B through R1. When signals are not applied to an external terminal A, a resistor R2 for preventing floating grounds a gate in an MOSFETT2. Consequently, feedthrough currents flowing through a series circuit of T2 and T3 are prevented while electrostatic breakdown is obviated. When a resistor R3 for preventing floating is formed in a package PKG, a resistor R2 for preventing feedthrough currents is shaped outside an element-that is, in the package PKG, as the resistor R3, and the resistor R3 is grounded. There are the resistor R1 and T1 (an element protective diode) in a semiconductor chip IC, and supply voltage applied at a terminal C and ground potential are applied as supply voltage and ground potential as they are on an input terminal, thus flowing no feedthrough currents in the element. |
