The TC74VHC74FS is a high-speed CMOS dual D-type flip-flop with preset and clear from Toshiba Semiconductor and Storage. This device is fabricated with silicon gate CMOS technology, achieving high-speed operation similar to equivalent bipolar Schottky TTL while maintaining CMOS low power dissipation. The TC74VHC74FS contains two independent D-type flip-flops with set (preset) and reset (clear) inputs and complementary outputs.

Applications:

• Registers
• Shift Registers
• Buffer Registers
• Control Circuits
• Memory Address Drivers

Features:

• High-speed operation: tpd = 4.1 ns (typ.) at VCC = 5 V
• 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 = 8 mA (min.)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC = 2 V to 5.5 V
• Pin and function compatible with 74HC74

Benefits:

• High Speed: Enables faster data processing and system performance.
• Low Power Consumption: Reduces energy consumption, suitable for battery-powered devices.
• High Noise Immunity: Provides stable operation in noisy environments.
• Direct Interface with TTL Circuits: Simplifies integration with existing TTL-based systems.
• Wide Operating Voltage: Offers flexibility in power supply design.
• Standard Pinout: Allows easy replacement of existing 74HC74 devices.

Additional Details:

The TC74VHC74FS comes in an SOP14 (Small Outline Package) and is available in tape and reel. Each flip-flop is positive-edge triggered. The preset (PRE) and clear (CLR) are asynchronous inputs and operate independently of the clock input. When PRE is low, the Q output is forced high. When CLR is low, the Q output is forced low. Simultaneous assertion of PRE and CLR is undefined and should be avoided. All inputs are equipped with protection circuits against static discharge. The device operates over a temperature range of -40°C to +85°C.