16 x 5 asynchronous FIFO memory The SN74S225N is a Schottky TTL (Transistor-Transistor Logic) integrated circuit (IC) manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:
### **Specifications:**
1. **Logic Family:** 74S (Schottky TTL)
2. **Function:** 4-bit bidirectional universal shift register
3. **Operating Voltage:** 5V (standard TTL levels)
4. **Operating Temperature Range:** 0°C to +70°C (commercial grade)
5. **Package Type:** PDIP (Plastic Dual In-line Package)
6. **Pin Count:** 16
7. **Propagation Delay:** Typically 10 ns (varies with conditions)
8. **Power Dissipation:** ~500 mW (typical)
### **Descriptions:**
- The SN74S225N is a 4-bit bidirectional universal shift register with parallel inputs and outputs.
- It supports serial and parallel data loading, shifting left or right, and synchronous or asynchronous operation.
- Designed for high-speed digital logic applications, it is commonly used in data storage, arithmetic operations, and serial-to-parallel conversion.
### **Features:**
- **Bidirectional Shifting:** Can shift data left or right based on control inputs.
- **Parallel Load Capability:** Allows direct loading of data via parallel inputs.
- **Synchronous Operation:** Controlled by a clock signal for precise timing.
- **Schottky Clamped:** Ensures faster switching and reduced propagation delay compared to standard TTL.
- **Wide Operating Conditions:** Compatible with standard TTL logic levels.
For exact timing diagrams and application-specific details, refer to the official Texas Instruments datasheet.
