74LS92 – Divide-by-12 Counter [Original]

74LS92 Divide-by-12 Counter IC – High-Speed TTL Logic

The 74LS92 is a high-speed 4-bit ripple counter, perfect for digital timing and frequency division. Designed as a versatile divide-by-12 counter, it ensures robust performance in diverse electronic applications. This integrated circuit features independent divide-by-two and divide-by-six sections. These sections can be cascaded for precise modulo-12 counting or used separately. It reliably triggers on HIGH-to-LOW clock transitions. Control is enhanced with a 2-input gated Master Reset (Clear) for easy initialization. A unique 2-input gated Master Set (Preset 9) adds functional flexibility. Engineered for low power consumption (45mW) and high count rates (up to 42 MHz). As a standard 74LS series component, it guarantees compatibility with common TTL switching voltages. It's an ideal choice for reliable frequency division and sequential logic solutions.

Specifications:

• Part Number: 74LS92
• Function: Divide-by-12 Counter
• Logic Family: 74LS Series (Low-Power Schottky TTL)
• Max Count Rate: 42 MHz
• Typical Power Consumption: 45 mW
• Number of Bits: 4-bit ripple type
• Operating Temperature: Up to 70°C
• Reset/Set Features: Gated Master Reset (Clear), Gated Master Set (Preset 9)
• Counting Modes: BCD, Bi-Quinary, Modulo-12, Modulo-16 (cascadable)
• Trigger Type: HIGH-to-LOW transition on clock inputs

Key features and benefits:

• Low Power Consumption (45 mW)
• High Count Rates (up to 42 MHz)
• Flexible Counting Modes (BCD, Bi-Quinary, Modulo-12)
• Integrated Gated Master Reset (Clear)
• Unique Gated Master Set (Preset 9)
• Standard TTL Switching Voltage Compatibility
• Input Clamp Diodes for High-Speed Termination
• Robust Operating Temperature up to 70°C

Applications:

• Frequency Divider Circuits
• Digital Clocks and Timers
• Pulse Counting Systems
• Sequential Control Logic
• Test Equipment Design

Package Includes:

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