1 standard ics quad 2-channel analog multiplexer / demultiplexer bu4551b / bu4551bf / bu4551bfv the bu4551b, bu4551bf, and bu4551bfv are multiplexers / demultiplexers capable of selecting and combining analog signals and digital signals with a configuration of 2 ch 4. control signals are used to turn on the switch of the corresponding channel. in addition, even if the logical amplitude (v dd -v ss ) of the control signal is low, signals with a large amplitude (v dd -v ee ) can be switched. in addition, as each switch has a low on resistance, it can be connected to a low impedance circuit. logic circuit diagram (16) v dd (8) v ss (7) v ee (15) w 0 (1) w 1 (2) x 0 (3) x 1 (6) y 0 (10) y 1 (11) z 0 (12) z 1 (9) cont (5) (13) (4) (14) y z x w level converter control truth table control on 0w 0 1w 1 x 0 y 0 z 0 x 1 y 1 z 1 block diagram w 1 1 x 0 2 x 1 3 x 4 y 5 y 0 6 v ee 7 v ss 8 16 15 14 13 12 11 10 9 v dd w 0 w z z 1 z 0 y 1 control w 1 control x 0 x 1 x y y 0 v ee w 0 w z z 1 z 0 y 1
2 standard ics bu4551b / bu4551bf / bu4551bfv absolute maximum ratings (v ss = 0v, ta = 25?) parameter symbol limits unit v dd v mw topr c tstg c v in ? 0.3 ~ v dd + 0.3 v 1000 ( dip ) , 500 ( sop ) , 400 ( ssop ) ? 40 ~ + 85 ? 55 ~ + 150 ? 0.3 ~ + 18 pd power supply voltage 2 power dissipation operating temperature storage temperature input voltage v dd - v ee v ? 0.3 ~ + 18 power supply voltage 1 electrical characteristics dc characteristics (unless otherwise noted, ta = 25?, v ee = v ss = 0v) parameter symbol min. typ. max. unit conditions measurement circuit v dd ( v ) v ih 3.5 v 5 fig.1 7.0 10 11.0 15 v il 1.5 v 5 fig.1 3.0 10 4.0 15 i ih 0.3 m a15v ih = 15v fig.1 i il ? 0.3 m a15v il = 0v v in = v dd / 2 v i = v dd or gnd fig.1 r on 1100 w 5 fig.2 500 10 280 15 d r on 25 w 5 fig.2 10 10 5 15 i off 0.3 m a 15 fig.3 ? 0.3 15 i dd 5 m a 5 10 10 15 15 input high-level voltage input low-level voltage input high-level current input low-level current on resistance on resistance deflexion off-channel leakage current static current dissipation
3 standard ics bu4551b / bu4551bf / bu4551bfv switching characteristics (unless otherwise noted, ta = 25?, v ee = v ss = 0v, r l = 10 k w , c l = 50pf) parameter symbol min. typ. max. unit conditions measurement circuit v dd (v) t plh t phl 35 ns 5 fig.4 15 10 12 15 t pzh t phz 360 ns 5 fig.5, 6 160 10 120 15 t pzl t plz 360 ns 5 fig.5, 6 160 10 120 15 15 mhz fig.7 ft 0.7 mhz fig.7 d 0.02 ? fig.7 c c 5 pf c s 10 pf f max. v ee = ? 5v * 1 v ee = ? 5v * 2 v ee = ? 5v * 3 propagation delay time switch in ? out propagation delay time cont ? out * 1 v in = 5v p-p sine wave, frequency that enables 20 log 10 v out / v in = ?3db * 2 v in = 5v p-p sine wave, frequency that enables 20 log 10 v out / v in = ?50db at channel off * 3 v in = 5v p-p sine wave propagation delay time cont ? out max. propagation frequency feedthrough attenuation sine wave distortion input capacitance (control) input capacitance (switch) measurement circuits i in v in cont common out / in channel in / out a v dd v dd v ee r l = 10k w fig. 1 input voltage, current gnd v v in v dd or gnd cont common out / in channel in / out v dd v dd / 2 r l = 10k w v v in v out r on = r l v out ? 1 fig. 2 on resistance v ee gnd
4 standard ics bu4551b / bu4551bf / bu4551bfv v dd or gnd cont common out / in channel in / out v dd v dd or gnd gnd or v dd a fig. 3 off-channel leakage current v ee gnd v dd or gnd cont common out / in channel in / out v dd c l p.g. r l v dd gnd t plh t phl 50% 50% input output fig. 4 propagation delay time (switch in to out) v ee gnd v dd cont common out / in channel in / out v dd out c l p.g. r l v dd gnd 50% 50% 90% t pzh t phz input output fig. 5 propagation delay time (cont, inh to out) v ee gnd
5 standard ics bu4551b / bu4551bf / bu4551bfv gnd cont common out / in channel in / out v dd v dd out c l p.g. r l 50% 50% 10% t pzl t plz input output fig. 6 propagation delay time (cont, inh to out) v ee gnd v dd or gnd cont common out / in channel in / out v dd c l r l v ~ d ~ fig. 7 maximum propagation frequency, feedthrough attenuation, sine wave distortion v ee v ee gnd electrical characteristic curve power dissipation: pd (mw) ambient temperature: ta ( c) 1200 dip16 sop16 1000 800 600 400 200 0 0255075 100 125 150 ssop-b16 fig. 8 power dissipation vs. ambient temperature
6 standard ics bu4551b / bu4551bf / bu4551bfv sop16 bu4551b bu4551bf dip16 bu4551bfv ssop-b16 0.4 0.1 1.27 0.15 0.15 0.1 0.3min. 4.4 0.2 6.2 0.3 0.11 1.5 0.1 1 16 10.0 0.2 8 9 9 8 16 1 0.1 6.4 0.3 4.4 0.2 5.0 0.2 0.1 0.15 0.1 0.22 0.1 0.65 1.15 0.1 0.3min. 0.51min. 0.3 0.1 9 16 8 1 6.5 0.3 3.2 0.2 4.25 0.3 0.5 0.1 19.4 0.3 2.54 0 ~ 15 7.62 external dimensions (units: mm)
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