The ’HC109 and ’HCT109 are dual J-K\ flip-flops with set and reset. The flip-flop changes state with the positive transition of Clock (1CP and 2CP).

The flip-flop is set and reset by active-low S\ and R\, respectively. A low on both the set and reset inputs simultaneously will force both Q and Q\ outputs high. However, both set and reset going high simultaneously results in an unpredictable output condition.

• Asynchronous Set and Reset
• Schmitt Trigger Clock Inputs
• Typical fMAX = 54MHz at VCC = 5V, CL = 15pF, A = 25°C
• Fanout (Over Temperature Range)
  • Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
  • Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55°C to 125°C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
  • 2V to 6V Operation
  • High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
• HCT Types
  • 4.5V to 5.5V Operation
  • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
  • CMOS Input Compatibility, Il 1A at VOL, VOH

• Number of channels (#)
• 2
• Technology Family
• HC
• Supply voltage (Min) (V)
• 2
• Supply voltage (Max) (V)
• 6
• Input type
• LVTTL/CMOS
• Output type
• Push-Pull
• Clock Frequency (MHz)
• 20
• ICC (Max) (uA)
• 80
• IOL (Max) (mA)
• -6
• IOH (Max) (mA)
• 6
• Features
• Balanced outputs, Positive edge triggered, High speed (tpd 10-50ns), Positive input clamp diode, Preset, Clear

CD54HC109的完整型号有：CD54HC109F3A，以下是这些产品的关键参数及官网采购报价：

CD54HC109F3A，工作温度：-55 to 125，封装：CDIP (J)-16，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网CD54HC109F3A的批量USD价格：6.793（1000+）