74LS112 DIP Dual J-K Negative-Edge-Triggered Flip-Flop With Clear and Preset
The 74LS112 is a high speed TTL integrated circuit containing two independent J-K flip flops. This device is designed for negative edge triggering, meaning the data at the J and K inputs is transferred to the outputs specifically during the high to low transition of the clock pulse. Each flip flop includes individual clock, J, and K inputs, as well as asynchronous active low preset and clear inputs.
The inclusion of both preset and clear functions allows for flexible control over the initial state of the outputs, independent of the clock signal. These asynchronous inputs provide an immediate override of the synchronous inputs, making the 74LS112 ideal for use in ripple counters, shift registers, and other complex sequential logic systems. The low power Schottky technology ensures high speed switching performance with minimal power consumption.
KEY FEATURES
- Dual independent J-K flip flops in one package
- Negative edge triggered clocking for synchronous logic
- Asynchronous active low preset and clear inputs
- High noise immunity and stable state switching
- Low power Schottky technology for energy efficiency
- Standard 16 pin dual in line package
SPECIFICATIONS
- Supply Voltage 4.75V to 5.25V
- Operating Temperature 0 to 70 Celsius
- Logic Type TTL Low Power Schottky
- Propagation Delay 15ns
- Maximum Clock Frequency 30MHz
- High Level Output Current -0.4mA
- Low Level Output Current 8mA
INTERFACES
- 1J Flip flop 1 J input
- 1K Flip flop 1 K input
- 1PRE Flip flop 1 Preset input active low
- 1CLR Flip flop 1 Clear input active low
- 1CLK Flip flop 1 Clock input negative edge
- 1Q Flip flop 1 True output
- 1QBAR Flip flop 1 Complementary output
- 2J Flip flop 2 J input
- 2K Flip flop 2 K input
- 2PRE Flip flop 2 Preset input active low
- 2CLR Flip flop 2 Clear input active low
- 2CLK Flip flop 2 Clock input negative edge
- 2Q Flip flop 2 True output
- 2QBAR Flip flop 2 Complementary output
- VCC Positive supply voltage
- GND Ground reference
