The code **DAXXXJC-R** typically refers to high-performance logic gates or buffer components, most commonly associated with **Toshiba’s** CMOS logic IC series (such as the TC7SZ or TC7SET series). The "JC" suffix often denotes the package type (such as USV or SC-70A), and the "R" indicates the packaging format (Tape & Reel). Below is a breakdown of the electronic characteristics and functions typically associated with parts following this naming convention. --- ### 1. Component Overview These parts are usually **Single-Gate** or **Little Logic** devices. Instead of a large chip with 14 pins containing four gates, these provide one specific function in a tiny 5-pin or 6-pin package. | Feature | Specification | | :--- | :--- | | **Logic Family** | CMOS (e.g., LVP, SZ, or SET series) | | **Operating Voltage** | Typically 1.65V to 5.5V | | **Speed** | Ultra-high speed (Low propagation delay, ~2-4ns) | | **Output Current** | High output drive (e.g., ±24mA at 3V) | | **Package Type** | SC-70 (USV) or SOT-353 | --- ### 2. Common Pinout Configuration For a standard 5-pin device (like a Buffer or Inverter), the pinout generally follows this structure: | Pin Number | Function | Description | | :--- | :--- | :--- | | 1 | IN A | Logic Input | | 2 | IN B / NC | Second Input or No Connection | | 3 | GND | Ground (0V) | | 4 | OUT Y | Logic Output | | 5 | Vcc | Power Supply | --- ### 3. Key Electronic Characteristics * **Overvoltage Tolerance:** Many of these parts are designed with "Input-Power-Down Protection." This means the input pins can handle up to 5.5V even if the chip's power supply ($V_{CC}$) is 0V. * **Low Power Consumption:** Being CMOS-based, they consume very little quiescent current ($I_{CC}$), making them ideal for battery-powered mobile devices. * **High-Z State:** Some variants (like the JC-R buffers with OE pins) allow the output to enter a High-Impedance state, effectively disconnecting the output from the circuit. ### 4. Typical Applications * **Signal Level Shifting:** Translating a 1.8V signal to a 3.3V system. * **Bus Buffering:** Strengthening a signal to drive multiple components. * **Pulse Shaping:** Cleaning up "noisy" square waves before they reach a processor. * **Isolation:** Protecting sensitive MCU pins from external connector voltage spikes. --- ### 5. Part Number Suffix Breakdown * **JC:** Refers to the physical package (Japan Standard naming for small-outline packages). * **-R:** Standard industry notation for **Tape and Reel** packaging, used in automated SMT (Surface Mount Technology) assembly lines.