74hc Counter ICs are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 74hc Counter ICs. The M54/74HC/ are BCD Decade counters and the M54/74HC/ are 4 bit binary counter- s. The CLOCK input is active on the rising edge. Both. 74HC 74HC/HCT; Presettable Synchronous 4-bit Binary Counter; Asynchronous Reset. For a complete data sheet, please also download. The IC
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You either have to invert the outputs using an additional device or use a different counter. The ‘HC and ‘HCT 74h1c61 asynchronous reset decade and binary counters, respectively; the ‘HC and ‘HCT devices are decade and binary counters, respectively, that are reset synchronously with the clock.
74HC161 Synch 4-bit Counter
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74HC161 Datasheet PDF
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The TE input is gated with the Q outputs of all four stages so that at the maximum count the terminal count TC output goes high for one clock period.
You could re-interpret the outputs as negative active low logic. This TC pulse is used to enable the next cascaded stage.
I have one question on the 74HC synchronous datashete, you can find the datasheet here: This device only counts up. The look-ahead carry feature simplifies serial cascading of the counters.
SeekIC only pays the seller after confirming you have received your order. We will also never share your payment details with your seller. Faithfully describe 24 hours delivery 7 days Changing or Refunding. Counting and parallel presetting are both accomplished synchronously with the negative-to-positive transition of the clock.
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