PCA9600DP-T NXP Semiconductors, PCA9600DP-T Datasheet - Page 18

• Manufacturer Part Number: PCA9600DP-T
• Manufacturer: NXP Semiconductors

Specifications of PCA9600DP-T

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: TSSOP
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
PCA9600_4
Product data sheet
Fig 19. Propagation SX to TX with V
Fig 21. Propagation RX to SX (SX pull-up to 3.3 V; V
V
(V)
CC
(1) TX output.
(2) SX input.
(1) RX input.
(2) SX output.
7
6
5
4
3
2
1
0
1
0
(SX pull-up to 3.3 V; TX pull-up to 5.7 V)
100
10.2 Negative undershoot below absolute minimum value
200
300 400 500 600 700 800
(1)
(2)
The reason why the IC pin reverse voltage on pins TX and RX in
is specified at such a low value, 0.3 V, is not that applying larger voltages is likely to
cause damage but that it is expected that, in normal applications, there is no reason why
larger DC voltages will be applied. This ‘absolute maximum’ specification is intended to be
a DC or continuous ratings and the nominal DC I
even reach 0 V. Inside PCA9600 at every pin there is a large protective diode connected
to the GND pin and that diode will start to conduct when the pin voltage is more than
about 0.55 V with respect to GND at 25 C ambient.
Figure 22
The plot was made using a curve tracer that applies 50 Hz mains voltage via a series
resistor, so the pulse durations are long duration (several milliseconds) and are reaching
peaks of over 2 A when more than 1.5 V is applied. The IC becomes very hot during this
V
(V)
CC
shows the measured characteristic for one of those diodes inside PCA9600.
7
6
5
4
3
2
1
0
1
RX
0
002aac932
time (ns)
= V
100
CC
(1)
(2)
Rev. 04 — 11 November 2009
200
900
= 3.3 V
(1)
300 400 500 600 700 800
(2)
CC
= 3.3 V; RX pull-up to 4.6 V)
Fig 20. Propagation SX to TX with RX tied to TX;
V
(V)
CC
(1) TX/RX output.
(2) SX input.
7
6
5
4
3
2
1
0
1
0
V
5.7 V)
CC
002aac934
(1)
time (ns)
100
= 3.3 V (SX pull-up to 3.3 V; TX pull-up to
(2)
2
(2)
C-bus voltage LOW usually does not
200
900
(1)
300 400 500 600 700 800
(2)
Dual bidirectional bus buffer
Table 5 “Limiting values”
PCA9600
© NXP B.V. 2009. All rights reserved.
002aac933
time (ns)
(1)
(2)
900
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