Buffer IC. BA8274F Datasheet

BA8274F IC. Datasheet pdf. Equivalent


Rohm BA8274F
www.DataSheet4U.com
Audio ICs
I2C bus line buffer IC
BA8274 / F
BA8274 / F
BA8274, BA8274F are buffer ICs that can lengthen the bus line retaining all features and operating mode of I2C bus
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.
zApplications
Mini-component stereo, Micro-component stereo and Television.
zFeatures
1) Dual, bi-directional, unity voltage gain buffer.
2) I2C bus compatible.
3) 1:10 impedance transformation.
4) Logic signal levels may include both supply and ground.
5) Power supply voltage range is large.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
VCC
Pd
Topr
Tstg
Limits
13.0
∗∗
800 / 550
40 to +85
55 to +125
For Ta=25°C or more it is reduced at 5.5mW/°C(SOP), 8.0mW/°C (DIP).
Unit
V
mW
°C
°C
zRecommended operating conditions (Ta=25°C)
Parameter
Symbol Min.
Power supply voltage VCC
4.5
Typ.
Max.
12
Unit
V
I2C bus is a trademark of Philips.
1/8


BA8274F Datasheet
Recommendation BA8274F Datasheet
Part BA8274F
Description I2C Bus Line Buffer IC
Feature BA8274F; www.DataSheet4U.com BA8274 / F Audio ICs I2C bus line buffer IC BA8274 / F BA8274, BA8274F are buf.
Manufacture Rohm
Datasheet
Download BA8274F Datasheet




Rohm BA8274F
www.DataSheet4U.com
Audio ICs
zBlock diagram
VCC
8
LY
7
Buffer
SY
6
BA8274 / F
N.C.
5
1
N.C.
Buffer
2
LX
3
SX
4
GND
zPin descriptions and input output circuits
Pin No. Pin Name
Equivalent circuit
VCC
2 LX
7 LY
GND
VCC
35.7
3 SX
6 SY
4 GND
8 VCC
GND
35.7
Pin description
A pin for outputting a buffer.
A pin for inputting a buffer.
A ground pin.
Power supply pin.
2/8



Rohm BA8274F
www.DataSheet4U.com
Audio ICs
BA8274 / F
zElectrical characteristics (unless otherwise noted, Ta=25°C, VCC=5V)
Parameter
Supply current 1
Supply current 2
Symbol
IQ1
IQ2
Min.
Typ.
16
17
Max.
30
30
Unit
mA
mA
Supply current 3
IQ3 30 40 mA
Drive current 1
ISX, ISY 2.0
2.7
mA
Drive current 2
Input current 1
Input current 2
Leakage current
Input/Output impedance
ILX, ILY
20
ISX, ISY
ILX, ILY
ILX, ILY
ZIN / ZOUT
8
27 mA
2.8 3.5 mA
3.0 3.3 mA
200 µA
10 13
Conditions
VCC=12V
Both I2C inputs LOW,
both buffered outputs sinking 30mA.
ISX, ISY LOW=0.4V
VLX, VLY LOW on buffered bus=0.3V.
ILX, ISY LOW=0.4V
VSX, VSY LOW on I2C bus=0.3V.
ILX, ILY sink on buffered bus=30mA.
ISX, ISY sink on I2C bus=3mA.
VLX, VLY=VCC and VSX, VSY=VCC.
zMeasurement circuit
VCC
VCC
N.C.
E4
F I4
AA
150
V
A2 B2
01 23
SW4
8
VCC
7
LY
N.C.
I3
V
C2
01
VCC
E3
D2
A
150
23
6
SY
SW3
5
N.C.
N.C.
1
SW1
LX
2
01 23
I2
N.C.
A1
A
E2
B1
V
150
VCC
SX
3
GND
4
SW2
01
C1
V
I1
N.C.
23
A
D1
E1
150
VCC
Fig.1
3/8







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