SDRAM having data latch circuit for outputting input data in synchronization with a plurality of control signals

Abstract

A synchronous DRAM semiconductor device including a data latch circuit outputting input data responsive to with a plurality of control signals is provided. The synchronous DRAM semiconductor device includes a first buffer for buffering an external control signal and generating a first internal control signal. A second buffer buffers the external control signal and generating a second internal control signal. A third buffer buffers the external control signal and generates an internal clock signal. A data latch circuit receives external data sequentially synchronized with the first and second internal control signals and the internal clock signal. The synchronous DRAM semiconductor device can prevent the time margin window for outputting data from the data latch circuit.

Dependencies are inferred from the claim text.