SN74ALS323集成电路（IC）的移位寄存器规格书PDF中文资料

SN74ALS323属于集成电路（IC）的移位寄存器。由美国德州仪器公司制造生产的SN74ALS323移位寄存器移位寄存器是低级逻辑器件，通常用于在串行和并行方式之间转换数字逻辑信号形式的数据，或在数字字内移动数据位的位置。移位寄存器通常使用集成到一个设备中的一组触发器来实现，常用于集成度更高的逻辑器件，但仍可用于 I/O 扩展等应用，在这些应用中离散形式的函数可能会非常有用。

Multiplexed I/O Ports Provide Improved Bit

Density

Four Modes of Operation:

− Hold (Store)

− Shift Right

− Shift Left

− Load Data

Operate With Outputs Enabled or at High

Impedance

3-State Outputs Drive Bus Lines Directly

Can Be Cascaded for n-Bit Word Lengths

Synchronous Clear

Applications:

− Stacked or Push-Down Registers

− Buffer Storage

− Accumulator Registers

Package Options Include Plastic

Small-Outline (DW) Packages, Ceramic

Chip Carriers (FK), and Standard Plastic (N)

and Ceramic (J) 300-mil DIPs

description

These 8-bit universal shift/storage registers

feature multiplexed input/output (I/O) ports to

achieve full 8-bit data handling in a 20-pin

package. Two function-select (S0, S1) inputs and

two output-enable (OE1, OE2) inputs can be used

to choose the modes of operation listed in the

function table.

Synchronous parallel loading is accomplished by taking both S0 and S1 high. This places the 3-state outputs

in the high-impedance state and permits data applied on the I/O ports to be clocked into the register. Reading

out of the register can be accomplished while the outputs are enabled in any mode. Clearing occurs

synchronously when the clear (CLR) input is low. Taking either OE1 or OE2 high disables the outputs but has

no effect on clearing, shifting, or storing data.

The SN54ALS323 is characterized for operation over the full military temperature range of −55°C to 125°C. The

SN74ALS323 is characterized for operation from 0°C to 70°C.