The TC74HCT174AF is a high-speed CMOS Hex D-Type Flip-Flop with Clear manufactured by Toshiba Semiconductor and Storage. This device contains six independent D-type flip-flops with a common clock and a common clear input. The device is suitable for use in registers, shift registers, and control circuits.

Applications

• Data Registers
• Shift Registers
• Storage Registers
• Control Registers
• Memory Address Latches

Features

• High Speed: fMAX = 40 MHz (typ.) at VCC = 5V.
• Low Power Dissipation: ICC = 4 μA (max) at Ta = 25°C.
• TTL Input Compatibility: VIH = 2.0 V (min), VIL = 0.8 V (max).
• Output Drive Capability: 10 LSTTL Loads.
• Symmetrical Output Impedance: |IOH| = IOL = 4 mA (min).
• Wide Operating Voltage Range: VCC = 4.5 V to 5.5 V.
• Common Clear Input

Benefits

• Efficient data storage due to the six independent D-type flip-flops.
• Simplified cascading for building larger registers and memory systems.
• Easy integration with TTL logic circuits because of TTL input compatibility.
• Reduced power consumption leading to energy-efficient system designs.
• High-speed operation enhances overall system performance.
• Common clear input provides a convenient method for resetting the flip-flops.

Additional Details

The TC74HCT174AF operates on a supply voltage between 4.5V and 5.5V. The device comes in a small outline package (SOIC), making it well-suited for surface mount applications and compact designs. The inputs are protected against static discharge. Data at the D inputs is transferred to the Q outputs on the positive-going edge of the clock pulse. The clear input resets all flip-flops to a low state asynchronously, independent of the clock input.

The operating temperature range of the TC74HCT174AF is typically between -40°C and +85°C. This device conforms to JEDEC standards for CMOS integrated circuits. The symmetrical output impedance facilitates balanced signal propagation, minimizing signal distortion. The TTL input compatibility allows direct connection to TTL logic. The high noise immunity ensures reliable operation in various applications including industrial and automotive systems. The common clear input allows for synchronous or asynchronous clearing of the register.