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

74LS92 Divide-by-12 Counter IC

The 74LS92 is a 4-bit ripple counter. It is engineered for precise digital timing and frequency division. This IC provides divide-by-12 functionality. It features independent divide-by-two and divide-by-six sections. These sections allow flexible cascading for modulo-12 counting or separate use. The device triggers on HIGH-to-LOW clock transitions. Control includes a 2-input gated Master Reset (Clear) and a Gated Master Set (Preset 9). It operates with a low power consumption of 45 mW and supports count rates up to 42 MHz. As a standard 74LS series component, it maintains compatibility with common TTL switching voltages.

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:

• 45 mW typical power consumption
• Maximum count rate of 42 MHz
• Supports BCD, Bi-Quinary, and Modulo-12 counting modes
• Integrated 2-input gated Master Reset (Clear)
• Integrated Gated Master Set (Preset 9)
• Compatible with standard TTL switching voltages
• Operating temperature range up to 70°C

Applications:

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

Frequently Asked Questions:

Q: How can the independent divide-by-two and divide-by-six sections of the 74LS92 be utilized?
A: The independent sections allow for flexible cascading to achieve modulo-12 counting or separate use for other frequency division requirements.

Q: What control inputs are available for the 74LS92 counter?
A: The 74LS92 includes a 2-input gated Master Reset (Clear) and a Gated Master Set (Preset 9) for counter control.

Q: What type of clock transition triggers the 74LS92?
A: The 74LS92 triggers on HIGH-to-LOW clock transitions.

Q: Is the 74LS92 compatible with standard TTL logic levels?
A: Yes, as a 74LS series component, it maintains compatibility with common TTL switching voltages.

Q: What are the typical power consumption and maximum count rate of the 74LS92?
A: The 74LS92 has a typical power consumption of 45 mW and supports count rates up to 42 MHz.

Package Includes:

*Image shown is a representation only.

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