The document describes the features and characteristics of the SCLS470A product, including wide operating voltage range, low input current, high-current outputs, low power consumption, etc. The product contains two independent J-K positive-edge-triggered flip-flops, which can function as flip-flops or toggle flip-flops.
The SN54HC109 and SN74HC109 are dual J‑K positive‑edge‑triggered flip‑flops with clear and preset inputs. They operate from 2 V to 6 V, consume low power (40 µA max) and feature low input current (1 µA max). The devices can be used as toggle flip‑flops, D‑type flip‑flops, or standard J‑K flip‑flops depending on input configuration.
The datasheet provides absolute maximum ratings, recommended operating conditions, electrical characteristics, switching performance, and detailed packaging information for PDIP, SOIC, SOP, and other package types. Mechanical dimensions and an important notice on product availability and warranty are also included.
| Operating voltage range | 2 V to 6 V |
|---|---|
| Low power consumption | 40 µA max |
| Typical propagation delay | 12 ns |
| High‑current output drive | up to +4 mA at 5 V |
A low level at the preset (PRE) or clear (CLR) inputs sets or resets the outputs regardless of the other inputs.