7495 Shift Register IC – 4-Bit Parallel-Access Bidirectional Logic Chip (74HC95 / 74LS95) in Pakistan

Overview

The 7495 IC is a versatile 4-bit shift register with both serial and parallel data entry capability. It consists of four R-S master-slave flip-flops, four AND-OR-INVERT gates, and several glass-passivated logic gates. This allows you to “load” 4 bits of data at once (Parallel) or “shift” them in one by one (Serial). It is widely used in universities across Pakistan (NUST, FAST, UET) for teaching fundamental computer architecture and bit manipulation.

Key Features

• Dual Operation Modes: Easily switch between Serial-In/Serial-Out and Parallel-In/Parallel-Out modes.

• Synchronous Shifting: All four bits shift simultaneously on the clock pulse, ensuring data integrity.

• Right-Shift Capability: Perfect for building arithmetic units or basic digital delay lines.

• Breadboard Friendly: Comes in a standard DIP-14 package, making it easy to plug into any standard breadboard for lab work.

• High-Speed Logic: Compatible with both TTL and CMOS logic levels (depending on the HC or LS version).

Technical Specifications

Common Applications

• Digital Logic Labs: Learning how registers store and move data.

• Serial-to-Parallel Conversion: Reducing the number of pins needed to read data.

• Pattern Generators: Creating simple LED chasing effects or sequences without a microcontroller.

• Pseudo-Random Number Generators: Used in basic encryption or noise generation circuits.