The HEF4520BT is a 4-bit dual internally synchronous Binary Counter has an active high clock input (nCP0) and an active low clock input (nCP1\\), buffered outputs from all four bit positions (nQ0 to nQ3) and an active high overriding asynchronous master reset input (nMR). The counter advances on either the low-to-high transition of the nCP0 input if nCP1\ is high or the high-to-low transition of the nCP1\ input if nCP0 is low. Either nCP0 or nCP1\ may be used as the clock input to the counter while the other clock input may be used as a clock enable input. Schmitt trigger action makes the clock input highly tolerant of slower clock rise and fall times. A high on nMR resets the counter (nQ0 to nQ3 = low) independent of nCP0 and nCP1\\. It operates over a recommended VDD power supply range of 3 to 15V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS or another input.
These terms and conditions are for reference only. The actual terms and conditions are subject to the sales staff's quotation.
- Please check the technical specifications of the products when ordering.
- MOQ is the minimum order quantity required to purchase each part.
- If you have special ordering instructions, please indicate them on the order page.
- Pre-Shipment Inspection (PSI) will be used when ordering.
- You can check the status of your order in the “My Order” section of your personal account.
- Orders cannot be canceled after the package has been shipped.
View more >
- Works with both individual and corporate clients. View more >
- All prices on the website include 22% VAT.
- Invoices are issued in the currency specified, but payment is made in Russian rubles at the exchange rate on the day of payment.
- If you need a detailed invoice or a tax identifier, please contact us.
- Delivery will take between 1 to 2 weeks after the shipment is sent to your country.
- Your order will be processed only after the invoice has been paid.
- The tracking number will be sent to you after the order is shipped. (It may take up to 24 hours for the information to be available from the carrier.) View more >
- Carefully tested and packaged by ChipWorker- Vacuum packed - Anti-static packaging - Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
- Authorities test the chip to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray inspection
- XRF inspection
- Electrical testing
- Surface testing
Contact Us
Contact us today and a sales representative will provide you with a quote for any model.
Customer Service, Quick Links
Find immediate assistance and access to our most used services through our Quick Links. Your satisfaction is our priority.