SN74LS191N

Counter Dividers Overview

The SN74LS191N is a synchronous 4-bit up/down binary counter manufactured by Texas Instruments. It operates within the standard LS logic family and utilizes a positive-edge-triggered clock mechanism for data synchronization. The device supports bidirectional counting capabilities, allowing for both increment and decrement operations based on control input states. It features an asynchronous reset function to clear the output state independently of the clock signal. The component is housed in a 16-pin Dual In-line Package (PDIP) designed for through-hole mounting on printed circuit boards.

Counter Dividers Feature Summary

• Synchronous four-bit binary counting architecture with dedicated up/down direction control
• Positive-edge triggered clocking mechanism for reliable data synchronization
• Asynchronous master reset capability for immediate output clearing
• Standard LS logic family compatibility with push-pull outputs

Counter Dividers Applications

• Digital frequency division circuits
• Programmable timing sequences
• Event counting systems
• Address generation in digital interfaces

Counter Dividers Procurement Notes

Verify the specific package type and pin configuration against the official datasheet before integration. Confirm that the supply voltage range aligns with the system requirements. Ensure the operating temperature specifications meet the environmental conditions of the intended application. Cross-reference the manufacturer part number to avoid counterfeit components.

Counter Dividers Selection Notes

Select this component when a synchronous binary counter with bidirectional functionality is required. The LS logic series offers a balance of speed and power consumption suitable for general-purpose digital applications. Consider the PDIP package if through-hole assembly is mandated by the board design constraints or mechanical stability requirements.

Counter Dividers Part Context

This integrated circuit belongs to the Texas Instruments 74LS series, which represents a widely adopted standard for low-power Schottky TTL logic functions. The SN74LS191 specifically addresses the need for versatile counting operations in digital systems. Its synchronous design ensures predictable timing behavior compared to asynchronous ripple counters.

Counter Dividers Replacement Considerations

SN74LS191DR: Surface mount variant with identical logical functionality.