74LS168 DIP-16 4-Bit Synchronous Up/Down Decade Counter IC (TTL, 5V)

Description -

The 74LS168 DIP is a TTL logic integrated circuit that functions as a 4-bit synchronous presettable up/down decade (BCD) counter in a 16-pin Dual Inline Package (DIP). It belongs to the 74LS Low Power Schottky logic family and is designed for high-speed counting, frequency division, timing, and digital control applications.

The IC counts in a Binary Coded Decimal (BCD) sequence from 0 to 9 and supports both up and down counting through a dedicated mode control input. It also features parallel preset inputs, carry look-ahead circuitry, dual enable inputs, and a ripple carry output, making it ideal for cascading multiple counters in digital systems.

Key Features -

• 4-bit synchronous up/down decade (BCD) counter

• Selectable up or down counting

• Parallel preset capability

• Internal carry look-ahead circuitry

• Dual count enable inputs

• Ripple carry output for cascading

• Low Power Schottky technology

• Standard DIP-16 package

Specifications -

• Product type - TTL Logic IC

• IC Model - 74LS168

• Logic Function - 4-Bit Synchronous Up/Down Decade Counter

• Package type - DIP-16

• Logic family - 74LS TTL

• Operating voltage - 4.75V to 5.25V DC

• Count sequence - BCD (0 to 9)

• Count direction - Up/Down Selectable

• Maximum clock frequency - 25MHz

• Typical power dissipation - 100mW

• High-level output current - -0.4mA

• Low-level output current - 8mA

• Operating temperature - 0C to 70C

Applications -

• Up/down event counters

• Digital clocks and timers

• Frequency division

• Industrial automation

• Position and motion control

• Embedded systems

• Instrumentation equipment

• Digital display systems