SN74ALS299 - 具有三态输出的 8 位通用移位/存储寄存器

SN74ALS299是TI德州仪器公司的一款移位寄存器产品，SN74ALS299是具有三态输出的 8 位通用移位/存储寄存器，本站介绍了SN74ALS299的封装应用图解、特点和优点、功能等，并给出了与SN74ALS299相关的TI元器件型号供参考。

SN74ALS299 - 具有三态输出的 8 位通用移位/存储寄存器 - 移位寄存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

These 8-bit universal shift/storage registers feature multiplexed I/O ports to achieve full 8-bit data handling in a single 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 asynchronously 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 SN54ALS299 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS299 is characterized for operation from 0°C to 70°C.

产品特性

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
Direct Overriding 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

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