PCA9538D,118 NXP Semiconductors, PCA9538D,118 Datasheet - Page 12
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PCA9538D,118
Manufacturer Part Number
PCA9538D,118
Description
IC I/O EXPANDER I2C 8B 16SOIC
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9538BS118.pdf
(28 pages)
Specifications of PCA9538D,118
Package / Case
16-SOIC (0.300", 7.5mm Width)
Interface
I²C, SMBus
Number Of I /o
8
Interrupt Output
Yes
Frequency - Clock
400kHz
Voltage - Supply
2.3 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Includes
POR
Logic Family
PCA9538
Number Of Lines (input / Output)
8.0 / 8.0
Operating Supply Voltage
2.3 V to 5.5 V
Power Dissipation
200 mW
Operating Temperature Range
- 40 C to + 85 C
Input Voltage
5 V
Logic Type
I2C, SMBus
Maximum Clock Frequency
400 KHz
Mounting Style
SMD/SMT
Number Of Input Lines
8.0
Number Of Output Lines
8.0
Output Current
50 mA
Output Voltage
5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
568-1839-2
935277418118
PCA9538D-T
935277418118
PCA9538D-T
NXP Semiconductors
PCA9538_5
Product data sheet
7.1 Minimizing I
When the I/Os are used to control LEDs, they are normally connected to V
resistor as shown in
I/O 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 12
than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O V
at or above V
Fig 12. High value resistor in parallel with
I
is about 1.2 V less than V
the LED
shows a high value resistor in parallel with the LED.
V
DD
DD
DD
IOn
.
DD
and prevents additional supply current consumption when the LED is off.
8-bit I
when the I/Os are used to control LEDs
Figure
2
Rev. 05 — 28 May 2009
C-bus and SMBus low power I/O port with interrupt and reset
LED
11. Since the LED acts as a diode, when the LED is off the
002aac660
100 k
DD
. The supply current, I
V
DD
Fig 13. Device supplied by a lower voltage
DD
, increases as V
3.3 V
V
DD
Figure 13
IOn
DD
when the LED is off.
PCA9538
5 V
002aac661
© NXP B.V. 2009. All rights reserved.
shows V
DD
I
LED
becomes
through a
DD
12 of 28
less
I