The HEF4001BT, 653 is a quad 2-input NOR gate integrated circuit from Nexperia. Key Specifications: 1. Type: Quad 2-input NOR gate 2. Logic Family: CMOS 3. Supply Voltage (Vdd): 4.5V to 15V 4. Input Voltage (Vin): 0V to Vdd 5. Operating Temperature: -40°C to 125°C 6. Package: SO14 (SOT108), 14-pin 7. Pin Configuration: See datasheet Features: 1. Low power consumption 2. High noise immunity 3. Wide operating temperature range 4. Compatible with TTL and CMOS logic 5. Symmetrical output impedance Applications: 1. Digital logic circuits 2. Computing and peripherals 3. Industrial control systems 4. Automotive electronics 5. Medical devices 6. Consumer electronics Electrical Characteristics: 1. Propagation Delay (tpd): 10ns (typ) at 10V 2. Power Dissipation (Pd): 1μW (typ) at 5V 3. Input Current (Iin): 1μA (typ) at 5V 4. Output Current (Iout): 4mA (min) at 5V Standards Compliance: 1. IEC 60950-1 (Safety Requirements) 2. UL 94V-0 (Flammability Rating) 3. RoHS compliant Dimensions: 1. Length: 10.2mm (0.402in) 2. Width: 7.5mm (0.295in) 3. Height: 2.45mm (0.096in) 4. Pitch: 1.27mm (0.05in) Datasheet: For detailed specifications, please refer to the Nexperia HEF4001BT datasheet. Ordering Information: To order or replace this IC, ensure you have the following information: 1. Part number (HEF4001BT, 653) 2. Quantity required You can purchase Nexperia ICs from authorized distributors, such as: - Diode House Equivalent Parts: Some equivalent parts from other manufacturers are: - Texas Instruments CD4001BE - ON Semiconductor MC14001B - STMicroelectronics 4001B Would you like more information or have specific questions about this logic gate?