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HC74A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
HC74AON/TOS139Yes

HC74A is a high-speed dual D-type flip-flop with clear, manufactured by ON Semiconductor (ON) and Toshiba (TOS).

The HC74A is a high-speed dual D-type flip-flop with clear, manufactured by ON Semiconductor (ON) and Toshiba (TOS).

Specifications:

  • Logic Family: HC (High-Speed CMOS)
  • Function: Dual D-Type Flip-Flop with Clear
  • Number of Flip-Flops: 2
  • Supply Voltage Range: 2V to 6V
  • High-Speed Operation: Typical propagation delay of 13 ns at 5V
  • Low Power Consumption: CMOS technology ensures low static power dissipation
  • Operating Temperature Range: -40°C to +85°C
  • Output Drive Capability: 10 LSTTL loads
  • Input Compatibility: TTL and CMOS levels

Descriptions:

The HC74A is a dual positive-edge-triggered D-type flip-flop with individual data (D), clock (CP), set (SD), and clear (CD) inputs. Each flip-flop features complementary outputs (Q and Q̅). The device is designed for high-speed operation while maintaining low power consumption.

Features:

  • Independent Set and Clear Inputs: Asynchronous control for each flip-flop
  • Positive-Edge Triggering: Data is transferred on the rising edge of the clock
  • Wide Operating Voltage Range: 2V to 6V
  • Balanced Propagation Delays: Ensures reliable timing performance
  • High Noise Immunity: CMOS technology provides robust noise resistance
  • Standard Pin Configuration: Compatible with industry-standard 14-pin DIP/SOIC packages

This device is commonly used in digital systems for data storage, synchronization, and sequential logic applications.

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