P82B715TD,112 NXP Semiconductors, P82B715TD,112 Datasheet - Page 8
![IC I2C BUS EXTENDER 8-SOIC](/photos/5/44/54425/568-8-soic_sot96-1_sml.jpg)
P82B715TD,112
Manufacturer Part Number
P82B715TD,112
Description
IC I2C BUS EXTENDER 8-SOIC
Manufacturer
NXP Semiconductors
Type
Bus Extenderr
Datasheet
1.P82B715TD118.pdf
(23 pages)
Specifications of P82B715TD,112
Package / Case
8-SOIC (3.9mm Width)
Tx/rx Type
I²C Logic
Delay Time
250ns
Capacitance - Input
3000pF
Voltage - Supply
4.5 V ~ 12 V
Current - Supply
22mA
Mounting Type
Surface Mount
Logic Family
P82B
Number Of Lines (input / Output)
1 / 1
Propagation Delay Time
250 ns
Operating Supply Voltage
4.5 V to 12 V
Power Dissipation
300 mW
Operating Temperature Range
- 40 C to + 85 C
Logic Type
I2C Bus Extender
Mounting Style
SMD/SMT
Number Of Input Lines
1
Number Of Output Lines
1
Output Current
60 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
568-3981-5
935154770112
P82B715TD
P82B715TD
935154770112
P82B715TD
P82B715TD
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P82B715TD,112
Manufacturer:
CIRRUS
Quantity:
130
NXP Semiconductors
P82B715_8
Product data sheet
The P82B715 has a static sink rating of 30 mA at Lx. The requirement is that the pull-up
on the buffered bus, in parallel with all other pull-ups that it is indirectly pulling LOW on Sx
pins of other P82B715 ICs, will not cause this 30 mA limit to be exceeded.
The minimum pull-up resistance in a 5 V
The general requirement is given in
Where: R
P82B715.
Figure 7
capacitance.
V
------------------------------------------
Fig 7.
CC max
R
2
PU
GND
V
local bus I
shows calculations for an expanded Standard-mode I
total capacitance
–
Typical loading calculation: adding an extension bus with P82B715
PU
CC
I
R1 =
effective capacitance
local I
2
I
I
0.4 V
C-bus devices
2
2
C-BUS
C-BUS
= parallel combination of all pull-up resistors driven by the Lx pin of the
50 pF
2
P82B715
1 s
C-bus pull-up
2
C-bus devices
strays
30 mA
SDA
SDA
= 20 k
Rev. 08 — 9 November 2009
local bus
20 pF
20 pF
10 pF
50 pF
R1
Sx
wiring capacitance
Equation
total capacitance
R2 =
effective capacitance
at common Lx node
buffered bus pull-up
3000 pF
Lx
1 s
10 % system is 170 .
proposed bus expansion
2:
= 330
LDA
R2
3000 pF
3000 pF
3 nF = cable wiring capacitance
Lx
Sx
1
2
C-bus with 3 nF of cable
remote I
total capacitance
remote I
R3 =
I
effective capacitance
2
C-bus devices
R3
SDA
30 pF
P82B715
1 s
2
2
C-bus devices
C-bus pull-up
P82B715
© NXP B.V. 2009. All rights reserved.
strays
I
2
I
C-bus extender
2
= 33 k
C-BUS
002aad692
10 pF
10 pF
10 pF
30 pF
5 V
0 V
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