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HC74 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
HC74100Yes

HC74 is a dual positive-edge-triggered D-type flip-flop integrated circuit (IC) manufactured by various semiconductor companies, such as Texas Instruments, NXP, and ON Semiconductor.

The HC74 is a dual positive-edge-triggered D-type flip-flop integrated circuit (IC) manufactured by various semiconductor companies, such as Texas Instruments, NXP, and ON Semiconductor.

Key Specifications:

  • Logic Family: HC (High-Speed CMOS)
  • Supply Voltage Range: 2V to 6V
  • High-Level Input Voltage (VIH): 3.15V (at 4.5V supply)
  • Low-Level Input Voltage (VIL): 1.35V (at 4.5V supply)
  • High-Level Output Current (IOH): -5.2mA (at 4.5V supply)
  • Low-Level Output Current (IOL): 5.2mA (at 4.5V supply)
  • Propagation Delay (tpd): ~15ns (typical at 5V supply)
  • Operating Temperature Range: -40°C to +85°C
  • Package Options: SOIC, PDIP, TSSOP

Description:

The HC74 contains two independent D-type flip-flops with individual data (D), clock (CLK), set (SD), and clear (CD) inputs. Each flip-flop stores a single bit of data and updates its output (Q and Q̅) on the rising edge of the clock signal.

Features:

  • Positive-edge triggering for synchronous operation
  • Asynchronous set (SD) and clear (CD) inputs (active LOW)
  • Complementary outputs (Q and Q̅) for each flip-flop
  • Low power consumption (typical CMOS power dissipation)
  • Wide operating voltage range (2V to 6V)
  • Balanced propagation delays for reliable timing
  • High noise immunity due to CMOS technology

The HC74 is commonly used in digital circuits for data storage, synchronization, and sequential logic applications.

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