SN54HC74 - 具有清零和预设功能的双路 D 类上升沿触发器

SN54HC74是TI德州仪器公司的一款D类触发器产品，SN54HC74是具有清零和预设功能的双路 D 类上升沿触发器，本站介绍了SN54HC74的封装应用图解、特点和优点、功能等，并给出了与SN54HC74相关的TI元器件型号供参考。

SN54HC74 - 具有清零和预设功能的双路 D 类上升沿触发器 - D类触发器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

The ’HC74 devices contain two independent D-type positive-edge-triggered flip-flops. A low level at the preset (PRE)\ or clear (CLR)\ inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE\ and CLR\ 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.

产品特性

Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 40-µA Max ICC
Typical tpd = 15 ns
±4-mA Output Drive at 5 V
Low Input Current of 1 µA Max

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