pca9600 NXP Semiconductors, pca9600 Datasheet - Page 13

• Manufacturer Part Number: pca9600
• Description: Dual Bidirectional Bus Buffer
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 7.
Refer to
PCA9600_2
Product data sheet
V
(V)
5
5
3.3
3.3
Fig 14. Driving ribbon or flat telephone cables
CC1
+V
cable
(V)
12
12
5
5
Figure
MASTER
I
2
C-BUS
Examples of bus capability
V
GND
CC1
14.
V
(V)
5
5
3.3
3.3
CC2
SCL
SDA
C2
R2
R1
( )
750
750
330
330
For more examples of faster alternatives for driving over longer cables such as Cat5
communication cable, see AN10658 . Communication at 1 MHz is possible over short
cables and > 400 kHz is possible over 50 m of cable.
R2
SX
SY
C2
R2
(k )
2.2
2.2
1
1
PCA9600
V
C2
(pF)
400
220
220
100
CC
RX
TX
TY
RY
+V cable drive
Cable
length
(m)
250
100
25
3
R1
BAT54A
Rev. 02 — 13 August 2008
R1
Cable
capacitance
n/a
(delay based)
n/a
(delay based)
1 nF
120 pF
delay
propagation
cable
5 ns/m
Cable
delay
1.25 s
500 ns
125 ns
15 ns
BAT54A
R1
R1
Set master
nominal SCL
HIGH
period
(ns)
600
600
260
260
RX
RY
TX
TY
PCA9600
LOW
period
(ns)
3850
2450
770
720
V
CC
Dual bidirectional bus buffer
SX
SY
C2
R2
Effective
bus clock
speed
(kHz)
125
195
620
690
R2
SDA
SCL
C2
PCA9600
© NXP B.V. 2008. All rights reserved.
SLAVE(S)
V
I
GND
2
002aac851
CC2
C-BUS
Max. slave
response
delay
normal
specification
400 kHz parts
normal
specification
400 kHz parts
meets Fm+
specification
meets Fm+
specification
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