74LS148 8-to-3 Line Priority Encoder IC DIP-16 TTL Logic Chip (74LS148N, Active LOW, 5V, Low Power Schottky)

Description -

The 74LS148 DIP is a TTL logic integrated circuit that performs 8-to-3 line priority encoding in a 16-pin Dual Inline Package (DIP). It belongs to the 74LS Low Power Schottky logic family and is designed to convert eight active LOW input lines into a 3-bit binary output while assigning priority to the highest-order active input.

The IC includes enable inputs, enable output, and group signal output, allowing multiple devices to be cascaded for larger priority encoding systems without additional logic. It is widely used in interrupt controllers, data acquisition systems, keyboard encoding, digital control circuits, and microprocessor-based applications.

Key Features -

• 8-to-3 line priority encoder

• Active LOW inputs and outputs

• Encodes the highest-priority active input

• Cascading capability for system expansion

• Enable input, enable output, and group signal output

• Low Power Schottky technology

• High-speed switching performance

• Standard DIP-16 package

Specifications -

• Product type - TTL Logic IC

• IC Model - 74LS148

• Logic Function - 8-to-3 Line Priority Encoder

• Package type - DIP-16

• Logic family - 74LS TTL

• Operating voltage - 4.75V to 5.25V DC

• Number of inputs - 8 Active LOW

• Number of outputs - 3-bit Binary Code

• Propagation delay - 14ns Typical

• Typical power dissipation - 60mW

• High-level output current - -0.4mA

• Low-level output current - 8mA

• Operating temperature - 0C to 70C

Applications -

• Interrupt handling systems

• Microprocessor systems

• Priority control circuits

• Keyboard encoding

• Data acquisition systems

• Industrial automation

• Digital communication systems

• Embedded system design