74LS26 DIP Quad 2-Input High Voltage Open Collector NAND Gate IC (14-Pin TTL Logic IC)

The 74LS26 DIP Quad 2-Input High Voltage Open Collector NAND Gate IC is a TTL logic integrated circuit that contains four independent 2-input positive NAND gates with high-voltage open collector outputs in a 14-pin Dual Inline Package (DIP). Built using Low Power Schottky (LS) TTL technology, it is designed for applications requiring high-voltage interfacing, external load driving, and flexible output configurations.

The high-voltage open collector outputs require external pull-up resistors and can support output voltages of up to 30V (typical). This enables the IC to drive relays, lamps, LEDs, and interface with higher voltage logic systems. The 74LS26 is widely used in industrial automation, bus systems, signal interfacing, relay control, and embedded digital applications.

Key Features -

• Four independent 2-input positive NAND gates

• High-voltage open collector outputs

• TTL compatible input levels

• Supports wired-OR configurations

• External pull-up resistor required

• Output voltage capability up to 30V (Typical)

• Low Power Schottky (LS) technology

• 14-pin DIP package

• High-speed switching performance

• Suitable for industrial and high-voltage interfacing applications

Specifications -

• Product type - TTL Logic IC

• IC model - 74LS26

• Logic function - Quad 2-Input Positive NAND Gate

• Logic family - 74LS TTL

• Package type - DIP-14

• Operating voltage - 5V DC

• Input type - TTL Compatible

• Output type - High Voltage Open Collector

• Output voltage capability - Up to 30V (Typical)

• Mounting type - Through Hole (THT)

• Operating temperature - Standard Commercial Range

Applications -

• Digital logic circuits

• Relay driver circuits

• Lamp and LED driver circuits

• High-voltage logic interfacing

• Wired-OR logic implementations

• Bus interface circuits

• Industrial automation systems

• Embedded systems

• Prototype PCB development

• DIY electronics projects