Rochester Electronics 25S18FM/B

The Am25S18 consists of four D-type flip-flops with a buffered common clock. Data meeting the D input setup and hold requirements is transferred to the Q outputs on the low-to-high clock transition. When the Output Enable (OE) input is LOW, the three-state Y outputs are enabled with the same data as the Q outputs. When the OE input is HIGH, the Y outputs are in the high-impedance state. The Am25S18 is a 4-bit high-speed Schottky register designed for real-time signal processing systems, where the standard outputs are used for recursive algorithms and the three-state outputs are used to transfer results to the data bus after multiple iterations. The device can also be used as an address or status register in computers or computer peripherals. Likewise, the Am25S18 is useful in certain display applications where the standard outputs are decoded to drive LEDs (or equivalent devices) and the three-state outputs are bus-organized for occasional interrogation of displayed data.

• Advanced Schottky technology
• Four D-type flip-flops
• Four standard totem-pole outputs
• Four tri-state outputs
• 75MHz clock frequency

• Display registers
• Real-time signal processing systems
• Computer address registers
• Computer status registers
• Display applications