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74LV161PW 데이터시트(PDF) 3 Page - NXP Semiconductors |
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74LV161PW 데이터시트(HTML) 3 Page - NXP Semiconductors |
3 / 16 page Philips Semiconductors Product specification 74LV161 Presettable synchronous 4-bit binary counter; asynchronous reset 1997 May 15 3 PIN CONFIGURATION SV00569 1 2 3 4 5 6 MR CP D0 D1 D2 D3 V CC TC Q0 16 15 14 13 12 11 7 8 GND CET PE 10 9 CEP Q1 Q2 Q3 PIN DESCRIPTION PIN NUMBER SYMBOL FUNCTION 1 MR Asynchronous master reset (active LOW) 2 CP Clock input (LOW-to-HIGH, edge-triggered) 3, 4, 5, 6 D0 to D3 Data inputs 7 CEP Count enable inputs 8 GND Ground (0 V) 9 PE Parallel enable input (active LOW) 10 CET Count enable carry input 14, 13, 12, 11 Q0 to Q3 Flip-flop outputs 15 TC Terminal count output 16 VCC Positive supply voltage LOGIC SYMBOL (IEEE/IEC) SV00571 CTR4 4CT = 15 1, 2D M1 R G3 G4 1 10 7 9 2 3 4 5 6 15 11 12 13 14 C2/1,3,4+ LOGIC SYMBOL SV00570 14 13 12 11 15 Q 0 Q 1 Q 2 Q 3 MR CP CET CEP PE D 3 D 2 D 1 D 0 TC 9 2 10 71 6 5 4 3 FUNCTIONAL DIAGRAM SV00572 PE CP TC CET CEP MR 7 10 15 2 1 9 D3 Q3 D2 Q2 D1 Q1 D0 Q0 BINARY COUNTER PARALLEL LOAD CIRCUITRY 6 11 5 12 4 13 3 14 |
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