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| Standard ICs Dual 4-bit static shift register BU4015B / BU4015BF The BU4015B and BU4015BF are 4-stage static shift registers, each consisting of two circuits. The D flip-flops for each stage share a common reset input, enabling external asynchronous reset at any point. Also, the flip-flops at each stage are triggered by the rising edge of the clock input. "H" level reset input resets the contents of all stages to "L", regardless of the clock and data input, and sets data outputs Q0 to Q3 to "L". *Features dissipation. 1) Low power 2) Wide range of operating power supply voltages. 3) High input impedance. 4) High fan-out. 5) Direct drive of 2 L-TTL inputs and 1 LS-TTL input. *Block diagram CLOCK B Q3B 1 16 VDD 2 CL Q2B 3 R D 14 RESET B Q0B 15 DB *Logic circuit diagram Q0 Q1 Q2 Q3 D D Q D Q D Q D Q CLR Q CLR Q CLR Q CLR Q CLOCK Q3 Q2 Q1 Q0 Q1A 4 13 RESET Q0A RESET A DA 5 Q0 Q1 Q2 Q3 6 CL R D 12 Q1B Q2B 11 7 10 Q3A CLOCK A VSS 8 9 *Truth table CLOCK D L H X X X : Irrelevant RESET L L L H Q0 L H Q1 Q0 Q0 Q2 Q1 Q1 Q3 Q2 Q2 No Change L L L L X 1 Standard ICs BU4015B / BU4015BF *Absolute maximum ratings (VSS = 0V, Ta = 25C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Input voltage Symbol VDD Pd Topr Tstg VIN Limits - 0.3 ~ + 18 1000 (DIP), 500 (SOP) - 40 ~ + 85 - 55 ~ + 150 - 0.3 ~ VDD + 0.3 Unit V mW C C V *Electrical characteristics otherwise noted, Ta = 25C, VSS = 0V) DC characteristics (unless Parameter Symbol Min. 3.5 Input high level voltage VIH 7.0 11.0 -- Input low level voltage VIL -- -- Input high level current Input low level current IIH IIL -- -- 4.95 Output high level voltage VOH 9.95 14.95 -- Output low level voltage VOL -- -- - 0.16 Output high level current IOH - 0.4 - 1.2 0.44 Output low level current IOL 1.1 3.0 -- Static current dissipation IDD -- -- Typ. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Max. -- -- -- 1.5 3.0 4.0 0.3 - 0.3 -- -- -- 0.05 0.05 0.05 -- -- -- -- -- -- 20 40 80 A mA mA V V A A V V Unit VDD (V) 5 10 15 5 10 15 15 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 VI = VDD or GND VOH = 4.6V VOH = 9.5V VOH = 13.5V VOL = 0.4V VOL = 0.5V VOL = 1.5V IO = 0mA IO = 0mA VIH = 15V VIL = 0V -- -- Conditions 2 Standard ICs Switching characteristics (unless otherwise noted, Ta = 25C, VSS = 0V, CL = 50pF) Parameter Symbol Min. -- Output rise time tTLH -- -- -- Output fall time tTHL -- -- -- Propagation delay time, CLOCK, DQ tPLH tPHL -- -- -- Propagation delay time, RESET to Q tPLH tPHL -- -- -- Setup time tsu -- -- -- Minimum clock pulse width tWH (CLK) -- -- -- Minimum reset pulse width tWH (R) -- -- -- Maximum clock frequency f (CLK) Max. -- -- -- Maximum clock rise time and fall time Input capacitance tr (CLK) tf (CLK) CIN -- -- -- Typ. 180 90 65 100 50 40 310 125 90 460 180 120 100 50 40 185 85 55 200 80 60 20 6.0 7.5 100 40 15 5 Max. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- pF s MHz ns ns ns ns ns ns ns Unit BU4015B / BU4015BF VDD (V) 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 -- Conditions -- -- -- -- -- -- -- -- -- -- 3 Standard ICs BU4015B / BU4015BF *Measurement circuits VDD D tSU P. G. 2 D Q0 Q1 Q2 P. G. 1 CL R Q3 VSS CL CL CL CL RESET GND Q0 tTLH CLOCK tWH tPLH 90% 20ns 20ns tSU 20ns 20ns tWH tPHL 50% 10% tPHL 50% tTHL 20ns 10% 90% 50% 20ns 10% tWH (R) Fig.1 Switching characteristics measurement circuit Fig.2 Switching time measurement waveform *Electrical characterisistic curve 1200 POWER DISSIPATION : Pd (mW) DIP16 1000 800 600 SOP16 400 200 0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE : Ta (C) Fig.3 Power dissipation vs. ambient temperature *External dimensions (Units: mm) BU4015B BU4015BF 10.0 0.2 19.4 0.3 16 9 6.5 0.3 16 6.2 0.3 4.4 0.2 9 7.62 3.2 0.2 4.25 0.3 1 1.5 0.1 8 0.11 0.3 0.1 2.54 0.5 0.1 1.27 0.4 0.1 0.3Min. 0.15 0 ~ 15 DIP16 SOP16 4 0.15 0.1 1 0.51Min. 8 |
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