74107 Dual J-K Flip-Flop with Clear Technical Summary

Overview

The 74107 is a dual J-K flip-flop integrated circuit featuring independent J-K inputs, clock inputs, and asynchronous clear functionality. This component is designed for high-speed logic applications where reliable state storage and toggling capabilities are required. Each flip-flop operates independently, providing true and complement outputs for flexible system integration. The device is characterized for operation from 0°C to 70°C and is available in multiple package options.

The 74107 utilizes positive-edge triggered clocking with synchronous J-K inputs and asynchronous clear capability. This makes it suitable for applications requiring precise timing control and immediate reset functionality. The device is TTL-compatible and operates across a standard voltage range, making it versatile for various digital systems.

Features

• Dual J-K flip-flops in single package
• Asynchronous clear (reset) inputs
• Positive-edge triggered clocking
• Standardized symmetrical output characteristics
• Complementary outputs (Q and Q̅) for each flip-flop
• Wide operating voltage range
• TTL-compatible inputs and outputs
• Low power consumption
• High noise immunity
• Available in multiple package options including DIP and SOIC

Applications

• General purpose flip-flop applications
• Counters and frequency dividers
• Shift registers
• State machines and control logic
• Data synchronization circuits
• Buffer storage applications
• Digital signal processing systems
• Timing and sequencing circuits
• Pulse shaping circuits
• Interface between different logic families

Pin Configuration and Description

Pinout Diagram

[Visual pinout diagram would be inserted here in actual documentation]

Pin Description

• Pin 1, 8 (1J, 2J): Synchronous J inputs for flip-flop 1 and 2
• Pin 4, 11 (1K, 2K): Synchronous K inputs for flip-flop 1 and 2
• Pin 2, 6 (1Q̅, 2Q̅): Complement outputs for flip-flop 1 and 2
• Pin 3, 5 (1Q, 2Q): True outputs for flip-flop 1 and 2
• Pin 12, 9 (1CK, 2CK): Clock inputs for flip-flop 1 and 2
• Pin 13, 10 (1CLR, 2CLR): Asynchronous clear (reset) inputs
• Pin 7 (GND): Ground reference (0V)
• Pin 14 (VCC): Positive supply voltage input

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VCC): -0.5V to +7V
• DC Input Voltage (VI): -0.5V to VDD + 0.5V
• DC Output Voltage (VO): -0.5V to VDD + 0.5V
• DC Input Diode Current (IIK): ±20mA
• DC Output Diode Current (IOK): ±20mA
• DC Output Current (IO): ±25mA
• DC Supply Current per Supply Pin (ICC): ±50mA
• DC Ground Current per Ground Pin (IGND): ±50mA
• Storage Temperature Range (TSTG): -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (VCC): 4.75V to 5.25V
• Input High Voltage (VIH): 2V min
• Input Low Voltage (VIL): 0.8V max
• Operating Temperature Range (TA): 0°C to 70°C
• Clock Frequency (fCLK): 0MHz to 30MHz typical

Functional Description

The 74107 contains two independent J-K flip-flops with asynchronous clear functionality. Each flip-flop features:

• Synchronous J and K inputs that are sampled on the rising edge of the clock signal
• Asynchronous clear input (active LOW) that immediately resets the flip-flop regardless of clock state
• True (Q) and complement (Q̅) outputs that always maintain opposite logic states

The flip-flop operation follows standard J-K flip-flop behavior:

• When J=0 and K=0: Outputs maintain current state (no change)
• When J=0 and K=1: Outputs reset (Q=0, Q̅=1)
• When J=1 and K=0: Outputs set (Q=1, Q̅=0)
• When J=1 and K=1: Outputs toggle (change state)

Truth Table

Package Information

The 74107 is available in several package options:

• 14-pin Plastic Dual In-line Package (PDIP)
  • JEDEC MS-001
  • Body width: 300 mil
  • Lead pitch: 100 mil
• 14-pin Small Outline Integrated Circuit (SOIC)
  • JEDEC MS-012
  • Body width: 150 mil
  • Lead