SN74LS594屬于集成電路（IC）的移位寄存器。由美國德州儀器公司制造生產(chǎn)的SN74LS594移位寄存器移位寄存器是低級邏輯器件，通常用于在串行和并行方式之間轉(zhuǎn)換數(shù)字邏輯信號形式的數(shù)據(jù)，或在數(shù)字字內(nèi)移動數(shù)據(jù)位的位置。移位寄存器通常使用集成到一個設(shè)備中的一組觸發(fā)器來實現(xiàn)，常用于集成度更高的邏輯器件，但仍可用于 I/O 擴展等應(yīng)用，在這些應(yīng)用中離散形式的函數(shù)可能會非常有用。

8-Bit Serial-In, Parallel-Out Shift

Registers with Storage

Choice of Output Configurations:

‘LS694 ... Buffered

‘LS599 ... Open-Collector

Guaranteed Shift Frequency:

DC to 20 MHz

Independent Direct-Overriding Clears on

Shift and Storage Registers

Independent Clocks for Both Shift and

Storage Registers

description

These devices each contain an 8-bit D-type storage

register. The storage register has buffered (‘LS594) or

open-collector (‘LS599) outputs. Separate clocks and

direct-overriding clears are provided on both the shift

and storage registers. A shift output (Q*) is provided

for cascading purposes.

Both the shift register and the storage register clocks

are positive-edge triggered. If the user wishes to con-

nect both clocks together, the shift register will always

be one clock pulse ahead of the storage register.