(China (Mainland))
Product Summary
The HEF4518BT is a dual 4-bit internally synchronous binary counter. The 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 HEF4518BT 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. The HEF4518BT operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input. It is also suitable for use over the full industrial (-40℃ to +85℃) temperature range.
Parametrics
HEF4518BT absolute maximum ratings: (1)supply voltage:-0.5V to +18V; (2)input clamping current:±10mA; (3)input voltage:-0.5V to VDD+0.5V; (4)output clamping current:±10mA; (5)input/output current:±10mA; (6)supply current:50mA; (7)storage temperature per output:-65℃ to +150℃; (8)ambient temperature:-40℃ to +85℃; (9)total power dissipation:500mW; (10)power dissipation:100mW.
Features
HEF4518BT features: (1)Tolerant of slow clock rise and fall times ; (2)Fully static operation ; (3)5 V, 10 V, and 15 V parametric ratings ; (4)Standardized symmetrical output characteristics ; (5)Operates across the full industrial temperature range:-40℃ to +85℃; (6)Complies with JEDEC standard JESD 13-B.
Diagrams
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Pricing (USD) |
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 HEF4518BT,652 |
NXP Semiconductors |
Counter ICs DUAL BCD COUNTER |
Data Sheet |
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HEF4518BT,653 |
NXP Semiconductors |
Counter ICs DUAL BCD COUNTER |
Data Sheet |
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HEF4518BTD |
NXP Semiconductors |
Counter ICs DUAL BCD COUNTER |
Data Sheet |
Negotiable |
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HEF4518BTD-T |
NXP Semiconductors |
Counter ICs DUAL BCD COUNTER |
Data Sheet |
Negotiable |
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