Philips P82B715TD Datasheet
INTEGRATED CIRCUITS
82B715
2
C bus extender
I
Product specification
Supersedes data of 1998 Jan 09
IC20 Data Handbook
2001 Mar 06
Philips Semiconductors Product specification
82B715I2C bus extender
PIN CONFIGURATIONS
DESCRIPTION
The 82B715 is a bipolar integrated circuit intended for application in
2
I
C bus systems.
2
While retaining all the operating modes and features of the I
system it permits extension of the practical separation distance
between components on the I
2
C bus by buffering both the data
C
(SDA) and the clock (SCL) lines.
2
The I
C bus capacitance limit of 400pF restricts practical
communication distances to a few meters. Using one 82B715 at
each end of longer cables reduces the cable loading capacitance on
2
the I
C bus by a factor of 10 times and may allow the use of low
cost general purpose wiring to extend bus lengths.
FEA TURES
•Dual, bi-directional, unity voltage gain buffer
2
•I
C bus compatible
•Logic signal levels may include both supply and ground
•X10 impedance transformation
•Wide supply voltage range
8-Pin Dual In-Line or SO
82B715
N.C.
L
S
GND
1
2
X
3
X
4
8
7
6
5
SU00290
V
L
Y
S
N.C.
PINNING
PIN SYMBOL FUNCTION
1 N.C.
2 L
X
3 S
X
4 GND Negative Supply
5 N.C.
6 S
Y
7 L
Y
8 V
CC
Buffered Bus, LDA or LCL
I2C Bus, SDA or SCL
I2C Bus, SCL or SDA
Buffered Bus, LCL or LDA
Positive Supply
CC
Y
QUICK REFERENCE DATA
LIMITS
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
V
CC
I
CC
I
line
V
in
V
out
Zin/Z
T
amb
out
Supply voltage 4.5 12 V
Quiescent current 16 mA
Output sink capability 30 mA
Input voltage range 0 V
Output voltage range 0 V
CC
CC
V
V
Impedance transformation 8 10 13
T emperature range –40 +85 °C
ORDERING INFORMATION
DESCRIPTION ORDER CODE DRAWING NUMBER
8-pin plastic dual In-line package P82B715PN SOT97-1
8-pin plastic small outline package P82B715TD SOT96-1
NOTE:
1. For applications requiring, 3V operation and additional buffer performance, see P82B96 Data Sheet.
2001 Mar 06 853-2240 25757
2
Philips Semiconductors Product specification
82B715I2C bus extender
V
CC
82B715
SDA
SCL
BUFFER
BUFFER
GND
Figure 1. Block Diagram: 82B715
LDA
LCL
SU00291
2001 Mar 06
3
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