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BU4021BF Datenblatt(PDF) 1 Page - Rohm |
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BU4021BF Datenblatt(HTML) 1 Page - Rohm |
1 / 5 page 1 Standard ICs 8-bit static shift register BU4021B / BU4021BF The BU4021B and BU4021BF are 8-bit static shift registers consisting of 8 register cells, each of which has parallel input. Control of the parallel / serial control input (P / S) enables serial input / serial output with clock synchronization, as well as parallel input / serial output conversions. •Logic circuit diagram •Truth table Serial operation D Ds (11) P / S (9) CLOCK (10) Q C DQ C DQ C DQ C DQ C DQ Q C DQ Q C D Q C (2) Q6 P8 (1) P7 (15) P6 (14) P5 (13) P4 (4) P3 (5) P2 (6) P1 (7) (12) Q7 (3) Q8 t CLOCK nL L 0 ?? n + 1H L 1 0 ? n + 2 L L 010 n + 3 H L 101 XL Q6 Q7 Q8 Q6 Q7 Q8 DS P / S (t = n + 6) (t = n + 7) (t = n + 8) •Block diagram 2 Q6 P8 P4 P3 P2 P1 Q8 3 4 5 6 7 8 15 14 13 12 11 10 9 VSS 1 P7 VDD P5 Q7 DS CLOCK P6 P / S 16 Q6 P8 P4 P3 P2 P1 Q8 P7 P5 Q7 DS CLOCK P6 P / S CLOCK XH L L XH H H DS Dm Qm∗ X: Irrelevant ∗: Q6, Q7, and Q8 are external P / S •Absolute maximum ratings (VSS = 0V, Ta = 25°C) Parameter Symbol Limits Unit Power supply voltage VDD V Power dissipation mW Operating temperature Topr °C Storage temperature Tstg °C Input voltage VIN – 0.3 ~ VDD + 0.3 V 1000 (DIP), 500 (SOP) Pd – 0.3 ~ + 18 – 40 ~ + 85 – 55 ~ + 150 Parallel operation |
Ähnliche Teilenummer - BU4021BF |
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Ähnliche Beschreibung - BU4021BF |
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