256K x 16, 256K x 18 SYNCHRONOUS PIPELINED STATIC RAM The IS61SP25618-150TQ is a high-speed synchronous SRAM manufactured by ISSI (Integrated Silicon Solution, Inc.). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Density:** 4Mb (256K x 18-bit)
- **Speed:** 150MHz (6.6ns access time)
- **Voltage Supply:** 3.3V (±10%)
- **Organization:** 262,144 words × 18 bits
- **Package:** 54-pin TSOP Type II (TQ package)
- **Operating Temperature:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
- **Interface:** Synchronous (pipelined or flow-through output options)
- **I/O Type:** Common I/O (shared data input/output)
- **Refresh:** Not required (static RAM)
### **Descriptions:**
- The IS61SP25618-150TQ is a synchronous SRAM designed for high-performance applications requiring fast data access.
- It supports burst mode operations for efficient data transfers.
- Features a fully synchronous pipeline or flow-through architecture for compatibility with high-speed processors.
- Suitable for networking, telecommunications, and cache memory applications.
### **Features:**
- **High-Speed Operation:** 150MHz clock frequency with 6.6ns access time.
- **Low Power Consumption:** Standby and operating power-saving modes.
- **Burst Mode Support:** Linear or interleaved burst sequences.
- **Synchronous Control:** Clock-controlled address, data, and control signals.
- **Byte Write Control:** Individual byte write enable (BWx) signals.
- **Self-Timed Write Cycle:** Simplifies timing requirements.
- **Single 3.3V Power Supply:** Compatible with low-voltage systems.
- **RoHS Compliant:** Lead-free and environmentally friendly.
This SRAM is commonly used in applications requiring fast, low-latency memory access, such as networking equipment, embedded systems, and high-speed data processing.
