HLF 74LS191 Presettable Synchronous 4-Bit Binary Up/Down Counter – DIP16 | High-Speed TTL Logic | 4.75V–5.25V, 0°C to +70°C | Through-Hole Package

The HLF 74LS191 is a Low-Power Schottky TTL presettable synchronous 4-bit up/down counter with parallel load capability and synchronous up/down counting control. It is ideal for frequency division, sequential logic, and counting applications where fast TTL operation is required.

The DIP16 package provides high-speed performance, low power dissipation, and excellent noise immunity, making it suitable for industrial, embedded, and educational digital logic systems.

Key Features:

• Function: Presettable Synchronous 4-Bit Binary Up/Down Counter

• Technology: Low-Power Schottky TTL (LS Series)

• Operating Voltage: 4.75V – 5.25V

• Operating Temperature: 0°C to +70°C

• Package Type: DIP16 (Dual In-Line Package)

• Mounting Type: Through-Hole

• Synchronous Up/Down Counting

• Parallel Load for Preset Values

• High-Speed TTL Switching

• Cascadable for Larger Counters

Applications:

• Frequency Divider Circuits

• Digital Timers and Sequencers

• Event Counting and Control Logic

• Microprocessor and Peripheral Interface

• Educational and Prototype Digital Designs