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74HC190D Scheda tecnica(PDF) 4 Page - NXP Semiconductors |
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74HC190D Scheda tecnica(HTML) 4 Page - NXP Semiconductors |
4 / 13 page December 1990 4 Philips Semiconductors Product specification Presettable synchronous BCD decade up/down counter 74HC/HCT190 PIN DESCRIPTION PIN NO. SYMBOL NAME AND FUNCTION 3, 2, 6, 7 Q0 to Q3 flip-flop outputs 4 CE count enable input (active LOW) 5 U/D up/down input 8 GND ground (0 V) 11 PL parallel load input (active LOW) 12 TC terminal count output 13 RC ripple clock output (active LOW) 14 CP clock input (LOW-to-HIGH, edge-triggered) 15, 1, 10, 9 D0 to D3 data inputs 16 VCC positive supply voltage Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol. |
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