Patent ID: 7053679
Filing Date: 2006-05-30
Classification: G11C

Abstract:
1. An output driver for a semiconductor device, the output driver comprising: a first pre-driver receiving a first signal so as to output a second signal in which a slew rate is controlled, wherein the first pre-driver comprises: a CMOS inverter for receiving the first signal, a pulse generating circuit for receiving the first signal to output a pulse signal having a constant width, a first control section for receiving the pulse signal outputted from the pulse generating circuit, and a second control section which is turned on and/or off by a control signal outputted from the first control section, wherein the second control section is positioned between a power supply voltage and an output end of the CMOS inverter, a second pre-driver receiving a third signal so as to output a fourth signal in which a slew rate is controlled; and a pull-up transistor and a pull-down transistor connected in series between a power supply voltage and a ground voltage, wherein the pull-up transistor is turned on and/or off by the second signal, and the pull-down transistor is turned on and/or off by the fourth signal.