The TC74HC174AFN is a high-speed CMOS hex D-type flip-flop with common clear fabricated with silicon gate CMOS technology. It consists of six D-type flip-flops with a common clock and clear input. Data at the D inputs is transferred to the Q outputs on the positive-going edge of the clock pulse. All six flip-flops are simultaneously reset by a low level on the clear (CLR) input.

Applications

• Buffer Registers
• Data Latches
• Sample and Hold Circuits
• Shift Registers
• Memory Address Registers

Features

• High-speed operation: fmax = 45 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(opr) = 2 V to 6 V
• Common clear input for simultaneous reset

Benefits

• High-speed performance ensures efficient data processing in various applications.
• Low power consumption makes it suitable for battery-powered devices and energy-efficient systems.
• High noise immunity enhances reliability in noisy industrial environments.
• Strong output drive capability enables direct interfacing with other logic circuits.
• Balanced propagation delays simplify timing design and improve overall system performance.
• The common clear input provides a convenient means for resetting all flip-flops simultaneously.

Additional Details

The TC74HC174AFN is triggered on the positive-going edge of the clock signal. The device operates synchronously, meaning that all flip-flops are updated simultaneously on the clock edge. The CLR input overrides the clock and data inputs, forcing all Q outputs LOW when the CLR input is low.

The TC74HC174AFN is available in a DIP16 (Dual In-Line Package) and operates over a wide temperature range, typically -40°C to +85°C.