82B715 Datasheet, PDF (2/10 Pages) NXP Semiconductors – I2C bus extender

Philips Semiconductors
I²C bus extender
Preliminary specification
82B715
DESCRIPTION
The 82B715 is a bipolar integrated circuit intended for application in
I²C bus systems.
While retaining all the operating modes and features of the I²C
system it permits extension of the practical separation distance
between components on the I²C bus by buffering both the data
(SDA) and the clock (SCL) lines.
The I²C 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 I²C 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
• I²C bus compatible
• Logic signal levels may include both supply and ground
• X10 impedance transformation
• Wide supply voltage range
QUICK REFERENCE DATA
SYMBOL
V_CC
I_CC
I_line
V_in
V_out
Z_in/Z_out
T_amb
PARAMETER
Supply voltage
Quiescent current
Output sink capability
Input voltage range
Output voltage range
Impedance transformation
Temperature range
PIN CONFIGURATIONS
8-Pin Dual In-Line or SO
82B715
N.C. 1
L_X 2
S_X ³
GND 4
8 V_CC
7 L_Y
6 _SY
5 N.C.
SU00290
PINNING
PIN
SYMBOL
1 N.C.
2 L_X
3 S_X
4 GND
5 N.C.
6 S_Y
7 L_Y
8 V_CC
FUNCTION
Buffered Bus, LDA or LCL
I²C Bus, SDA or SCL
Negative Supply
I²C Bus, SCL or SDA
Buffered Bus, LCL or LDA
Positive Supply
MIN.
4.5
30
0
0
8
–40
LIMITS
TYP.
16
MAX.
12
V_CC
V_CC
10
13
+85
UNIT
V
mA
mA
V
V
°C
ORDERING INFORMATION
DESCRIPTION
8-pin plastic dual In-line package
8-pin plastic small outline package
ORDER CODE
P82B715P N
P82B715T D
NOTE:
1. For applications requiring, 3V operation and additional buffer performance, see P82B96 Data Sheet.
DRAWING NUMBER
SOT97-1
SOT96-1
1998 Jan 09
2