PCAL6416APW,118 NXP Semiconductors, PCAL6416APW,118 Datasheet - Page 26

• Manufacturer Part Number: PCAL6416APW,118
• Description: Interface - I/O Expanders 16b I2C BUS INTERUPT
• Manufacturer: NXP Semiconductors

Specifications of PCAL6416APW,118

• Rohs: yes
• Maximum Operating Frequency: 100 kHz
• Operating Supply Voltage: 1.65 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-24
• Operating Current: 200 mA
• Output Current: 25 mA
• Product Type: I/O Expanders
• Factory Pack Quantity: 2500

NXP Semiconductors
PCAL6416A
Product data sheet
9.3 Power-on reset requirements
Reducing the current drive capability may be desirable to reduce system noise. When the
output switches (transitions from H/L), there is a peak current that is a function of the
output drive selection. This peak current runs through V
and will create noise (some radiated, but more critically Simultaneous Switching Noise
(SSN)). In other words, switching many outputs at the same time will create ground and
supply noise. The output drive strength control through the Output Drive Strength
registers allows the user to mitigate SSN issues without the need of additional external
components.
In the event of a glitch or data corruption, PCAL6416A can be reset to its default
conditions by using the power-on reset feature. Power-on reset requires that the device
go through a power cycle to be completely reset. This reset also happens when the device
is powered on for the first time in an application.
The two types of power-on reset are shown in
Table 30
types of power-on reset.
Fig 21. V
Fig 22. V
specifies the performance of the power-on reset feature for PCAL6416A for both
DD(P)
DD(P)
is lowered below 0.2 V or to 0 V and then ramped up to V
is lowered below the POR threshold, then ramped back up to V
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 24 December 2012
Low-voltage translating 16-bit I
Figure 21
DD
and
and V
2
C-bus/SMBus I/O expander
Figure
PCAL6416A
SS
package inductance
22.
DD(P)
© NXP B.V. 2012. All rights reserved.
002aag961
DD(P)
002aag960
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