Description

The SN74LS11N is a Triple 3-Input Positive-AND Gate IC, manufactured by Texas Instruments and housed in a standard 14-pin DIP through-hole package. It belongs to the TTL Low-Power Schottky (LS) logic family and contains three independent 3-input AND gates in a single chip, making it a compact solution when a design needs several AND logic functions without dedicating a separate IC to each one.

Each of the three gates operates independently, accepting three logic inputs and producing a HIGH output only when all three inputs are HIGH — standard AND gate behavior. This makes the SN74LS11N a fundamental building block for combinational logic design, control circuits, and any digital system requiring multi-input AND conditions, such as enable/interlock logic, address decoding conditions, and general Boolean logic implementation.

Being part of the well-established 7400 series, it's widely used in educational electronics, hobbyist digital logic projects, and legacy TTL-based circuit designs.

Key Specifications

• Function: Triple 3-input AND gate (3 independent gates per chip)
• Logic Family: TTL, Low Power Schottky (LS)
• Package: 14-pin PDIP (through-hole)
• Output Current: 400µA (HIGH) / 8mA (LOW)
• Max Propagation Delay: 20ns @ 5V, 15pF load
• Quiescent Current (Max): 3.6mA
• Logic Levels: 0.8V (LOW) / 2V (HIGH)
• Supply Voltage: 4.75V–5.25V
• Operating Temperature: 0°C to 70°C
• Manufacturer: Texas Instruments

Common Applications

• Combinational logic and Boolean AND functions
• Enable/interlock and control logic circuits
• Address decoding conditions in digital systems
• Educational and hobbyist digital electronics projects

Package Includes

• 1 x SN74LS11N IC (14-pin DIP)