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AY-5-9151A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
AY-5-9151AGI333Yes

AY-5-9151A** is a **General Instrument (GI) 4-bit arithmetic logic unit (ALU) slice** integrated circuit.

The AY-5-9151A is a General Instrument (GI) 4-bit arithmetic logic unit (ALU) slice integrated circuit. Below are its key specifications, descriptions, and features:

Manufacturer Specifications:

  • Manufacturer: General Instrument (GI)
  • Technology: TTL (Transistor-Transistor Logic)
  • Function: 4-bit ALU slice
  • Package Type: 16-pin DIP (Dual In-line Package)
  • Supply Voltage (Vcc): +5V (standard TTL levels)
  • Operating Temperature Range: 0°C to +70°C (commercial grade)

Descriptions:

  • The AY-5-9151A is a 4-bit ALU designed for arithmetic and logic operations in digital systems.
  • It can perform 16 different logic and arithmetic functions, including addition, subtraction, AND, OR, XOR, and shift operations.
  • It is commonly used in microprocessor-based systems, calculators, and early computing hardware.
  • The ALU operates in conjunction with carry look-ahead (CLA) circuits for high-speed arithmetic processing.

Features:

  • 4-bit parallel processing for arithmetic and logic operations.
  • 16 programmable functions controlled via function select inputs.
  • Carry-in (Cn) and Carry-out (Cn+4) for multi-bit expansion.
  • High-speed operation (typical propagation delay of 30-50 ns).
  • TTL-compatible inputs and outputs for easy interfacing.
  • Low power consumption (compared to early ALU designs).

This IC was widely used in 1970s and 1980s computing systems before being replaced by more advanced microprocessors.

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