74S288

74S288 256-Bit Open Collector TTL PROM

The 74S288 is a high-speed 256-bit Programmable Read-Only Memory (PROM) IC featuring an open collector output configuration. This Schottky TTL memory chip is a critical component widely used in classic arcade game boards, pinball machine logic circuits, and other vintage game room electronics. Whether you're restoring a beloved cabinet or replacing a failed chip on a game board, the 74S288 is a reliable, time-tested solution for keeping your machines running at their best.

Engineered for performance and compatibility, the 74S288 features Schottky clamping for high-speed operation and PNP inputs that help reduce input loading — making it an ideal drop-in replacement for many original game PCBs. Its open collector design provides the flexibility needed for wired-OR bus configurations commonly found in classic arcade and pinball hardware.

• Schottky 256-Bit TTL Memory for reliable data storage
• PNP Inputs for reduced input loading and improved circuit compatibility
• Schottky clamped design for high-speed operation
• Open collector output configuration for flexible bus interfacing
• Compatible with a wide range of classic arcade and pinball game boards