| Number of channels (#) | 2 |
| Technology Family | AS |
| Supply voltage (Min) (V) | 4.5 |
| Supply voltage (Max) (V) | 5.5 |
| Input type | Bipolar |
| Output type | Push-Pull |
| Clock Frequency (MHz) | 105 |
| ICC (Max) (uA) | 17000 |
| IOL (Max) (mA) | 8 |
| IOH (Max) (mA) | -0.4 |
| Features | Positive edge triggered, High speed (tpd 10-50ns), Preset, Clear |
- Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
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These devices contain two independent J-K\ positive-edge-triggered 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 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 directly related 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.
The SN54ALS109A and SN54AS109A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS109A and SN74AS109A are characterized for operation from 0°C to 70°C.
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