74LS90 – Decade Counter / Binary Counter [Original]

74LS90 Decade Counter / Binary Counter Integrated Circuit

The 74LS90 is a highly versatile integrated circuit functioning as both a Decade Counter and a Binary Counter. This monolithic device incorporates four master-slave flip-flops and additional gating for robust performance. It features a divide-by-two counter and a three-stage binary counter, offering a divide-by-five count cycle length. The 74LS90 is equipped with a gated zero reset for easy initialization. Additionally, it includes gated set-to-nine inputs, making it perfect for BCD nine's complement applications. Part of the popular 74xxx series, this IC is a reliable choice for various digital counting needs. Its efficient design ensures stable and accurate counting operations in your projects.

Specifications:

• IC Type: Decade Counter / Binary Counter
• Logic Family: 74LS Series (TTL)
• Count Frequency (Max): 42 MHz
• Counter Configuration: Divide-by-2 & 3-Stage Binary (Divide-by-5)
• Reset Function: Gated Zero Reset
• BCD Functionality: Gated Set-to-Nine Inputs
• Operating Temperature (Max): 70°C
• Flip-Flops: 4 Master-Slave
• Power Dissipation: Low
• Supply Voltage: Standard TTL

Key features and benefits:

• Versatile Decade Counter and Binary Counter functionality
• Integrated divide-by-two and three-stage binary counters
• High-speed operation with a 42MHz count frequency
• Features gated zero reset for easy initialization
• Includes gated set-to-nine inputs for BCD nine's complement applications
• Low power dissipation for efficient operation
• Standard TTL switching voltages for broad compatibility
• Operates reliably in temperatures up to 70°C

Applications:

• Frequency division and generation circuits
• Digital clock and timer circuits
• Event counting and pulse accumulation
• BCD (Binary Coded Decimal) counting applications
• Sequential control and logic systems
• Data processing and display units

Package Includes:

*Image shown is a representation only.

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