74F569SC

Overview

The onsemi 74F569SC is a 4-bit bidirectional synchronous counter with 3-state outputs, housed in a 20-lead SOIC package. It operates within a supply voltage range of +4.5V to +5.5V and supports an ambient temperature range of 0°C to +70°C. The device features a maximum clock frequency of 90 MHz at 25°C and 70 MHz at 70°C. Propagation delays from Clock Pulse to output range up to 17.5 ns, while setup times for parallel data inputs are specified at 4.0 ns.

Feature Summary

• Synchronous counting and loading capabilities
• Lookahead carry functionality for cascading
• Programmable preset operation
• 3-state outputs for bus systems

Applications

• Bus organized systems requiring bidirectional counting
• Programmable counters utilizing preset capability
• Cascaded multi-stage counter designs

Procurement Notes

Verify the specific suffix 'SC' corresponds to the 20-lead Small Outline Integrated Circuit (SOIC) package before procurement. Confirm that the component meets the required operating temperature range of 0°C to +70°C for your application environment. Ensure compatibility with standard 5V logic levels given the input/output voltage specifications provided in the datasheet.

Selection Notes

Select this component when a fully synchronous 4-bit reversible counter with tri-state outputs is required. It is suitable for applications needing lookahead carry for high-speed cascading. Consider the 20-lead SOIC package constraints and the specific propagation delay characteristics relative to your system clock speed requirements.

Part Context

This part belongs to the 74F series of logic integrated circuits, known for fast switching speeds. The 74F569 specifically implements a 4-bit bidirectional counter architecture. It is manufactured by onsemi, formerly Fairchild Semiconductor, and follows standard JEDEC MS-013 dimensions for its SOIC package variant.

Replacement Considerations

Public confirmed substitute part numbers: SN74F74D, SN74F74DR, SN74F74NSR.