The TC74HC112AF is a high-speed CMOS Dual JK Flip-Flop with Set and Reset inputs, fabricated using silicon gate C2MOS technology. It achieves the high-speed operation similar to equivalent Schottky TTL while maintaining the CMOS low power dissipation. It contains two independent JK flip-flops with individual Set (SD) and Reset (RD) inputs. Information at the J and K inputs is transferred to the Q and Q outputs on the negative-going edge of the clock pulse. The Set and Reset inputs are asynchronous and operate independently of the clock input. When low, these inputs force the Q output to the high or low states, respectively.

Applications

• Registers
• Counters
• Control circuits
• Data storage
• Frequency dividers

Features

• High-speed: fmax = 60 MHz (typ.) at VCC = 5V
• Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
• High noise immunity: VNIH = VNIL = 28 % VCC (min)
• Output drive capability: 10 LSTTL loads
• Symmetrical output impedance: |IOH| = IOL = 4 mA (min)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC = 2V to 6V
• With Set and Reset inputs

Benefits

• Fast switching speeds enable high-speed operation in digital circuits.
• Low power consumption is ideal for battery-powered and energy-efficient applications.
• High noise immunity reduces susceptibility to false triggering, improving system reliability.
• High output drive capability allows driving multiple loads without signal degradation.
• Symmetrical output impedance ensures consistent signal integrity across the outputs.
• Balanced propagation delays minimize timing skew and improve system performance.
• Wide operating voltage range provides flexibility in power supply designs.
• Set and Reset inputs offer asynchronous control for immediate state setting.

Additional Details

The TC74HC112AF is supplied in a SOP16 (Small Outline Package) package. The operating temperature range is -40°C to 85°C. The device is pin-compatible with standard TTL logic devices. The Set and Reset inputs override the clock and JK inputs. Care should be taken to ensure that Set and Reset are not simultaneously active, as this can lead to unpredictable output states.