PCAL6416APW,118 NXP Semiconductors, PCAL6416APW,118 Datasheet - Page 24

• 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
9. Application design-in information
PCAL6416A
Product data sheet
Fig 17. Typical application
(1) External resistors are required for inputs (on P port) that may float. Also, internal pull-up or pull-down may be used to eliminate
Device address configured as 0100 000x for this example.
P0_0 and P0_2 through P1_0 are configured as inputs.
P0_1 and P1_1 through P1_7 are configured as outputs.
the need for external components. If a driver to an input will never let the input float, a resistor is not needed. If an output in the
P port is configured as a push-pull output there is no need for external pull-up resistors. If an output in the P port is configured
as an open-drain output, external pull-up resistors are required.
9.1 Minimizing I
When the I/Os are used to control LEDs, they are normally connected to V
resistor as shown in
V
lower than V
Designs needing to minimize current consumption, such as battery power applications,
should consider maintaining the I/O pins greater than or equal to V
Figure 18
less than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O
V
off.
I
I
at or above V
is about 1.2 V less than V
shows a high value resistor in parallel with the LED.
DD(P)
DD
All information provided in this document is subject to legal disclaimers.
DD(P)
.
when the I/Os are used to control LEDs
Figure
and prevents additional supply current consumption when the LED is
Rev. 3 — 24 December 2012
Low-voltage translating 16-bit I
17. Since the LED acts as a diode, when the LED is off the I/O
DD(P)
. The supply current, I
PCAL6416A
DD(P)
2
, increases as V
C-bus/SMBus I/O expander
Figure 19
PCAL6416A
DD
when the LED is off.
© NXP B.V. 2012. All rights reserved.
shows V
DD
I
becomes
through a
002aaf965
DD(P)
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