### Overview of AM25LS374AXM The **AM25LS374AXM** is a high-performance, low-power Schottky (LS) Octal D-type edge-triggered flip-flop. It belongs to the 25LS series, which is an improvement over the standard 74LS series, specifically designed for high-speed bus-oriented applications. --- ### Key Specifications and Technical Data | Parameter | Specification | | :--- | :--- | | **Logic Family** | Low-Power Schottky (LS) | | **Function** | Octal D-Type Flip-Flop (3-State) | | **Number of Bits** | 8-bit | | **Package Type** | Often found in Ceramic DIP or Flatpack (Military Grade) | | **Propagation Delay** | ~10-15 ns (typical) | | **Output Type** | 3-State (Tri-state) | | **Operating Temperature** | -55°C to +125°C (Military Grade) | --- ### Internal Functional Blocks 1. **D-Type Flip-Flops:** Eight individual storage elements that capture data on the rising edge of the clock. 2. **Edge-Triggered Clock (CP):** The data at the 'D' inputs is transferred to the 'Q' outputs during the Low-to-High transition of the clock pulse. 3. **3-State Outputs:** These allow the device to be connected directly to bus-organized systems. When the Output Enable ($\overline{OE}$) is HIGH, the outputs are in a high-impedance state (disconnected). 4. **Hysteresis Inputs:** The inputs often feature Schottky clamping to minimize internal ringing and improve noise immunity. --- ### Pin Configuration Summary | Pin Name | Description | | :--- | :--- | | **D0 - D7** | Data Inputs (8 bits) | | **CP** | Clock Pulse Input (Active on rising edge) | | **$\overline{OE}$** | Output Enable (Active Low) | | **Q0 - Q7** | 3-State Data Outputs | | **Vcc / GND** | Power Supply (+5V) and Ground | --- ### Applications * **Buffer Registers:** Temporary storage for data between a CPU and a peripheral. * **I/O Ports:** Acting as an interface for bidirectional data buses. * **Bus Drivers:** Driving high-capacitance loads on data highways in military or industrial computing systems. --- ### Logic Truth Table | $\overline{OE}$ | CP | Dn | Qn | | :---: | :---: | :---: | :---: | | L | $\uparrow$ | H | H | | L | $\uparrow$ | L | L | | L | L/H | X | No Change | | H | X | X | High-Z (Off) | *Key: L = Low, H = High, $\uparrow$ = Rising Edge, X = Don't Care, High-Z = High Impedance.*