PCA9601DP,118 NXP Semiconductors, PCA9601DP,118 Datasheet - Page 20

• Manufacturer Part Number: PCA9601DP,118
• Description: IC DUAL BI-DIR BUS BUFFER 8-TSSO
• Manufacturer: NXP Semiconductors

Specifications of PCA9601DP,118

• Number Of Channels Per Chip: 2
• Supply Voltage (max): 15 V
• Supply Voltage (min): 2.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Interface: I2C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-5302-2

NXP Semiconductors
PCA9601_1
Product data sheet
testing but it was not damaged. Whenever there is current flowing in any of these diodes it
is possible that there can be faulty operation of any IC. For that reason we put a
specification on the negative voltage that is allowed to be applied. It is selected so that, at
the highest allowed junction temperature, there will be a big safety factor that guarantees
the diode will not conduct and then we do not need to make any 100 % production tests to
guarantee the published specification.
For the PCA9601, in specific applications, there will always be transient overshoot and
ringing on the wiring that can cause these diodes to conduct. Therefore we designed the
IC to withstand those transients and as a part of the qualification procedure we made
tests, using DC currents to more than twice the normal bus sink currents, to be sure that
the IC was not affected by those currents. For example, the TX/TY and RX/RY pins were
tested to at least −80 mA which, from
functioning of the PCA9601 is not affected even by those large currents. The Absolute
Maximum (DC) ratings are not intended to apply to transients but to steady state
conditions. This explains why you will never see any problems in practice even if, during
transients, more than −0.3 V is applied to the bus interface pins of PCA9601.
Figure 23 “Diode characteristic curve”
DC specification was selected. The current at 25 °C is near zero at −0.55 V. The
PCA9601 is allowed to operate with +125 °C junction and that would cause this diode
voltage to decrease by 100 × 2 mV = 200 mV. So for zero current we need to specify
−0.35 V and we publish −0.3 V just to have some extra margin.
Remark: You should not be concerned about the transients generated on the wiring by a
PCA9601 in normal applications and that is input to the TX/RX or TY/RY pins of another
PCA9601. Because not all ICs that may be driven by PCA9601 are designed to tolerate
negative transients, in
they can be managed if required.
Fig 23. Diode characteristic curve
All information provided in this document is subject to legal disclaimers.
diode current
−10
(mA)
−10
−10
−10
Section 10.2.1 “Example with questions and answers”
−10
Rev. 01 — 28 May 2010
−1
−1
0
2
3
4
−2.0
−1.5
Figure
also explains how the general Absolute Maximum
−1.0
23, would be more than −0.8 V. The correct
−0.5
voltage (V)
002aaf063
Dual bidirectional bus buffer
0
PCA9601
© NXP B.V. 2010. All rights reserved.
we show
20 of 31