SN74ALS253D集成电路（IC）的信号开关多路复用器解码器规格书PDF中文资料

SN74ALS253D属于集成电路（IC）的信号开关多路复用器解码器。由德州仪器制造生产的SN74ALS253D信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。

3-State Versions of the ′ALS153 and

SN74AS153

Permits Multiplexing From n Lines to

One Line

Performs Parallel-to-Serial Conversion

Package Options Include Plastic

Small-Outline (D) Packages, Ceramic Chip

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

Ceramic (J) 300-mil DIPs

description

These data selectors/multiplexers contain

inverters and drivers to supply full binary decoding

data selection to the AND-OR gates. Separate

output control inputs are provided for each of the

two 4-line sections.

The 3-state outputs can interface with and drive

data lines of bus-organized systems. With all but

one of the common outputs disabled (at a

high-impedance state), the low impedance of the

single enabled output drives the bus line to a high

or low logic level. Each output has its own

output-enable (OE) input. The output is disabled

when OE is high.

The SN54ALS253 is characterized for operation

over the full military temperature range of −55°C

to 125°C. The SN74ALS253 and SN74AS253A

are characterized for operation from 0°C to 70°C.