Datasheet

Philips Semiconductors Product specification
82B715I
2
C bus extender
2
2001 Mar 06 853-2240 25757
DESCRIPTION
The 82B715 is a bipolar integrated circuit intended for application in
I
2
C bus systems.
While retaining all the operating modes and features of the I
2
C
system it permits extension of the practical separation distance
between components on the I
2
C bus by buffering both the data
(SDA) and the clock (SCL) lines.
The I
2
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
the I
2
C bus by a factor of 10 times and may allow the use of low
cost general purpose wiring to extend bus lengths.
FEATURES
• Dual, bi-directional, unity voltage gain buffer
• I
2
C bus compatible
• Logic signal levels may include both supply and ground
• X10 impedance transformation
• Wide supply voltage range
PIN CONFIGURATIONS
1
2
3
4
N.C.
GND
S
X
L
Y
S
Y
N.C.
5
6
7
8
V
CC
8-Pin Dual In-Line or SO
82B715
L
X
SU00290
PINNING
PIN SYMBOL FUNCTION
1 N.C.
2 L
X
Buffered Bus, LDA or LCL
3 S
X
I
2
C Bus, SDA or SCL
4 GND Negative Supply
5 N.C.
6 S
Y
I
2
C Bus, SCL or SDA
7 L
Y
Buffered Bus, LCL or LDA
8 V
CC
Positive Supply
QUICK REFERENCE DATA
LIMITS
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
V
CC
Supply voltage 4.5 12 V
I
CC
Quiescent current 16 mA
I
line
Output sink capability 30 mA
V
in
Input voltage range 0 V
CC
V
V
out
Output voltage range 0 V
CC
V
Z
in
/Z
out
Impedance transformation 8 10 13
T
amb
Temperature 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.