SN54ALS74A

具有清零和预设功能的双路上升沿 D 类触发器

These devices contain two independent positive-edge-triggered D-type flip-flops. A low level at the preset or clear inputs sets or resets the outputs regardless of the levels of the other inputs. When and are inactive high, data at the data D input meeting the setup-time requirements are transferred to the outputs on the positive-going edge of the clock CLK pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of CLK. Following the hold-time interval, data at the D input can be changed without affecting the levels at the outputs.

The and SN54AS74A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS74A and SN74AS74A are characterized for operation from 0°C to 70°C.

 

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Package Options Include Plastic Small-Outline D Packages, Ceramic Chip Carriers FK, and Standard Plastic N and Ceramic J 300-mil DIPs