The **6116LA55DB** is a high-performance CMOS Static Random Access Memory (SRAM) chip. It is widely recognized for its use in legacy computing, industrial control systems, and military-grade hardware due to its high reliability and specific packaging. --- ### 1. Technical Specifications Below are the primary electrical and performance characteristics for the 6116LA55DB: | Feature | Specification | | :--- | :--- | | **Memory Capacity** | 16 Kilobits (16K) | | **Organization** | 2,048 words x 8 bits (2K x 8) | | **Access Time** | 55 nanoseconds (ns) | | **Technology** | CMOS (Complementary Metal-Oxide Semiconductor) | | **Supply Voltage** | 5V (Standard TTL Compatible) | | **Operating Current** | Low Power (L-suffix indicates low power consumption) | | **Package Type** | Side-Brazed Ceramic DIP (Dual In-line Package) | --- ### 2. Part Number Breakdown Understanding the nomenclature helps identify the exact capabilities of the component: * **6116**: The base model number for a 2K x 8 Static RAM. * **LA**: Indicates "Low Power" standby and active modes. * **55**: Represents the maximum speed/access time (55ns). * **D**: Refers to the **Ceramic Side-Brazed DIP** package (often used for high durability). * **B**: Denotes **MIL-STD-883 Compliant** (Military Grade processing/screening). --- ### 3. Pin Configuration and Functions The 6116 series typically uses a 24-pin layout. Key pins include: * **A0 - A10**: Address inputs (used to select one of the 2,048 bytes). * **I/O0 - I/O7**: Data inputs/outputs (bidirectional data bus). * **$\overline{CS}$ (Chip Select)**: Activates the chip when pulled LOW. * **$\overline{WE}$ (Write Enable)**: Enables writing data to the memory when LOW. * **$\overline{OE}$ (Output Enable)**: Controls the output buffers during read operations. * **Vcc / GND**: Power (+5V) and Ground pins. --- ### 4. Key Applications Because this specific variant (DB) is a military-grade, ceramic-packaged part, it is typically found in: 1. **Avionics and Aerospace**: Flight control systems requiring high thermal resistance. 2. **Military Hardware**: Communication gear and ruggedized computers. 3. **Legacy Industrial Systems**: Old PLC (Programmable Logic Controller) units where 5V logic is still standard. 4. **Medical Equipment**: Older diagnostic machines that require high-reliability components.