SN74ALS165数据手册集成电路（IC）的移位寄存器规格书PDF

描述 Description

The 'ALS165 are parallel-load 8-bit serial shift registers that, when clocked, shift the data toward serial (QH and Q\\H) outputs. Parallel-in access to each stage is provided by eight individual direct data (A-H) inputs that are enabled by a low level at the shift/load (SH/LD\\) input. The 'ALS165 have a clock-inhibit function and complemented serial outputs.
Clocking is accomplished by a low-to-high transition of the clock (CLK) input while SH/LD\\ is held high and the clock inhibit (CLK INH) input is held low. The functions of CLK and CLK INH are interchangeable. Since a low CLK and a low-to-high transition of CLK INH also accomplishes clocking, CLK INH should be changed to the high level only while CLK is high. Parallel loading is inhibited when SH/LD\\ is held high. The parallel inputs to the register are enabled while SH/LD\\ is low independently of the levels of the CLK, CLK INH, or serial (SER) inputs.
The SN54ALS165 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS165 is characterized for operation from 0°C to 70°C.

特性 Features

• Complementary Outputs
• Direct Overriding Load (Data) Inputs
• Gated Clock Inputs
• Parallel-to-Serial Data Conversion
• Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs