| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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25 pcs
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25 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Manufacturer Name | |
| Power Dissipation | |
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The HEF4518BP is a dual 4-bit internally synchronous BCD counter manufactured by Phihong USA. This component offers flexibility with both active HIGH (CP0) and active LOW (CP1) clock inputs, allowing one to be used as a clock enable. It also includes an active HIGH overriding asynchronous master reset input (MR).
The counter advances on specific transitions of the clock inputs, and a HIGH signal on MR resets the counter to all LOW outputs, independent of the clock signals. The Schmitt-trigger action on the clock inputs provides tolerance for slower clock rise and fall times.
Key electrical characteristics include a supply voltage range of -0.5 V to +18 V and a typical propagation delay from clock to output of 120 ns. The device operates across an ambient temperature range of -40 °C to +85 °C. It is available in a 16-lead DIP package.
Applications for the HEF4518BP include multistage synchronous and asynchronous counting, as well as frequency division.
| Qty | Low | High |
|---|---|---|
| 1+ | $165.89 | $165.89 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The supply voltage range is -0.5 V to +18 V.
The typical propagation delay from clock input to output is 120 ns.
The component operates across an ambient temperature range of -40 °C to +85 °C.
The HEF4518BP is supplied in a 16-lead DIP package.
Applications include multistage synchronous counting, multistage asynchronous counting, and frequency dividers.