SN74HC109 - 具有清零和预设功能的双路 J-K 上升沿触发器

SN74HC109是TI德州仪器公司的一款J-K触发器产品，SN74HC109是具有清零和预设功能的双路 J-K 上升沿触发器，本站介绍了SN74HC109的封装应用图解、特点和优点、功能等，并给出了与SN74HC109相关的TI元器件型号供参考。

SN74HC109 - 具有清零和预设功能的双路 J-K 上升沿触发器 - J-K触发器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

These devices contain two independent J-K\ 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 J and K\ inputs 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 related directly to the rise time of the clock pulse. Following the hold-time interval, data at the J and K\ inputs can be changed without affecting the levels at the outputs. These versatile flip-flops can perform as toggle flip-flops by grounding K\ and tying J high. They also can perform as D-type flip-flops if J and K\ are tied together.

产品特性

Wide Operating Voltage Range of 2 V to 6 V
Low Input Current of 1 µA Max
High-Current Outputs Drive Up To 10 LSTTL Loads
Low Power Consumption, 40-µA Max ICC
Typical tpd = 12 ns
±4-mA Output Drive at 5 V

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