SN74F253DR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

SN74F253DR属于集成电路（IC）的信号开关多路复用器解码器。由美国德州仪器公司制造生产的SN74F253DR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 SN54F153 and

SN74F153

• Permits Multiplexing From N Lines to

One Line

• Performs Parallel-to-Serial Conversion

• Package Options Include Plastic

Small-Outline Packages, Ceramic Chip

Carriers, and Standard Plastic and Ceramic

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 will drive the bus line to a

high or low logic level. Each output has its own

strobe (G) inputs. The output is disabled when its

strobe is high.

The SN54F253 is characterized for operation over

the full military temperature range of −55°C to

125°C. The SN74F253 is characterized for

operation from 0°C to 70°C.