BA8274 Rohm, BA8274 Datasheet
BA8274
Available stocks
Related parts for BA8274
BA8274 Summary of contents
Page 1
... C bus line buffer IC BA8274 / F BA8274, BA8274F are buffer ICs that can lengthen the bus line retaining all features and operating mode of I system. Adoption of this buffer in data and clock line enable to improve the drive capacity and to lengthen the bus line with using standard wire at a low price. ...
Page 2
... Audio ICs Block diagram N.C. Pin descriptions and input output circuits Pin No. Pin Name Equivalent circuit GND GND 4 GND Buffer Buffer Pin description A pin for outputting a buffer. 35.7 A pin for inputting a buffer. 35.7 A ground pin. Power supply pin. BA8274 / F N. GND 2/8 ...
Page 3
... V CC Both both buffered outputs sinking 30mA 2.0 2 2.8 3 3.0 3 200 N.C. I3 150 SW3 GND SW2 150 I1 N. Fig.1 BA8274 / F Conditions =12V 2 C inputs LOW LOW=0. LOW on buffered bus=0.3V LOW=0. LOW bus=0.3V sink on buffered bus=30mA sink bus=3mA and 150 N. 150 3/8 ...
Page 4
... Audio ICs Circuit operation BA8274/F contains two identical buffer circuits which enable I distances without degradation of system performance or requiring the use of special cables. The buffer has an effective current gain of about 10 from I bus side, about 10 times that current will be flowing into the buffered bus side (See Fig.2). ...
Page 5
... C systems approximation this 2 C bus nodes should be multiplied by a factor of about 10 times bus nodes and the buffered bus. Thus it is possible to combine some bus system can be combined onto to the buffered bus if the original BA8274 / nodes, and the 2 C bus 5/8 ...
Page 6
... C bus. PROPOSED BUS EXPANSION R1 R2 BA8274/F BA8274/F LDA 3000pF Fig.4 Effective capacitance Buffered line Wiring Cap. 3000pF Total Cap. 3000pF Buffered bus pull-up 1 sec 333k 3000pF = 262 BA8274 / SDA Effective capacitance 2 Remote I C devices Devices 10pF Strays 10pF BA8274 Buffer 10pF Total Cap ...
Page 7
... But it retains original function BUS, SDA or SCL X Y Because the two buffer circuits in the BA8274/F are identical either input pin can be used as the I line, or the SCL clock line Buffered bus, LDA or LCL the buffered low impedance line side, the corresponding output becomes LDA and LCL. ...
Page 8
... Audio ICs External dimensions (Unit: mm) BA8274 9.3 0 7.62 2.54 0.5 0 DIP8 BA8274F 5.0 0 0.15 0.1 0.1 1.27 0.4 0.1 SOP8 BA8274 / F 8/8 ...
Page 9
... Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any ...