74279 Quad Set-Reset Latch Logic IC – DIP-16

The 74279 is a TTL logic integrated circuit containing four independent Set-Reset (SR) latches in a single package. It provides asynchronous data storage, allowing each latch to change state immediately when the Set (S) or Reset (R) input is activated, without requiring a clock signal. This makes the 74279 ideal for state memory, signal debouncing, digital sequencing, and control logic applications. Operating on a standard 5V TTL supply, it offers reliable state retention and fast response in digital systems.

• Quad SR latch configuration
• Four independent set-reset latches
• Asynchronous operation without clock input
• Separate set and reset control inputs
• Standard TTL logic compatibility
• Single 5V supply operation
• Fast switching response
• Stable state retention until changed
• Suitable for control and sequencing circuits
• Useful for switch debouncing
• DIP-16 through-hole package
• Breadboard-friendly design
• Reliable TTL logic performance
• Easy PCB integration

• Model: 74279
• Device Type: Quad Set-Reset Latch IC
• 0Logic Family: TTL
• Number of Latches: 4
• Control Inputs: Set and Reset
• Supply Voltage: 5V
• Input Logic Levels: TTL Compatible
• Output Type: Standard TTL Output
• Propagation Delay (Typical): 20ns
• Power Consumption (Typical): 15mW per latch
• Package Type: 16-Pin DIP
• Mounting Type: Through-Hole
• Operating Temperature Range: 0°C to +70°C
• Application Type: State Storage and Control Logic

• 3D Model
• Datasheet

• SR Latch Circuit - Basic Introduction