HLF 74LS161 Presettable Synchronous 4-Bit Binary Counter with Asynchronous Reset – SOP16 | High-Speed TTL Logic | 4.75V–5.25V, 0°C to +70°C | Surface-Mount Package

The HLF 74LS161 SOP16 is a high-speed, Low-Power Schottky TTL 4-bit binary counter with synchronous counting, asynchronous reset, and presettable inputs. It delivers fast, low-power TTL logic performance in a compact surface-mount form factor, making it ideal for space-constrained digital systems.

With reliable operation at 4.75V–5.25V, this counter supports parallel loading and cascading, enabling flexible use in frequency division, digital timing, and sequencing applications.

Key Features:

• Function: Presettable Synchronous 4-Bit Binary Counter

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

• Operating Voltage: 4.75V – 5.25V

• Operating Temperature: 0°C to +70°C

• Package Type: SOP16 (Surface-Mount)

• Mounting Type: SMD (Surface Mount Device)

• Asynchronous Reset and Parallel Load Features

• High-Speed, Reliable TTL Performance

• Low Power Consumption and Compact Design

• Expandable for Multi-Stage Counters

Applications:

• Frequency Division and Counting Circuits

• Digital Timers and Clock Sequencers

• Control and Automation Logic

• Microprocessor and Peripheral Systems

• Compact Digital Electronics and Educational Kits