Allicdata Part #: | 568-5028-5-ND |
Manufacturer Part#: |
PCA9557PW,112 |
Price: | $ 0.91 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | NXP USA Inc |
Short Description: | IC I/O EXPANDER I2C 8B 16TSSOP |
More Detail: | I/O Expander 8 I²C, SMBus 400kHz 16-TSSOP |
DataSheet: | PCA9557PW,112 Datasheet/PDF |
Quantity: | 4717 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
1 +: | $ 0.82530 |
10 +: | $ 0.73836 |
100 +: | $ 0.57557 |
500 +: | $ 0.47545 |
1000 +: | $ 0.37535 |
Series: | -- |
Packaging: | Tube |
Lead Free Status / RoHS Status: | -- |
Part Status: | Obsolete |
Moisture Sensitivity Level (MSL): | -- |
Number of I/O: | 8 |
Interface: | I²C, SMBus |
Interrupt Output: | No |
Features: | POR |
Output Type: | Open Drain, Push-Pull |
Current - Output Source/Sink: | 10mA, 25mA |
Clock Frequency: | 400kHz |
Voltage - Supply: | 2.3 V ~ 5.5 V |
Operating Temperature: | -40°C ~ 85°C |
Mounting Type: | Surface Mount |
Package / Case: | 16-TSSOP (0.173", 4.40mm Width) |
Supplier Device Package: | 16-TSSOP |
Base Part Number: | PCA9557 |
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The PCA9557PW,112 is an input/output (I/O) expander chip used in various computer and digital applications. The basic function of an I/O expander is to provide extra control and communication lines to a microcontroller that can be programmed to respond to certain events or commands. The PCA9557PW,112 is ideal for embedded applications because it provides a fast, simple way to increase the electronic interface, as well as add flexibility to a system.
The PCA9557PW,112 is a general-purpose I/O expander chip with 16-bit I/O port, a wide input voltage range, and low power consumption. It has two I/O Port lines, each with 8 bits of data and four programmable Port lines. It has an onboard 8-bit counter which can be used for various applications and an 8-bit status register which can be used for various debugging purposes. The chip also features programmable pull-up resistors and software write/read protection.
The PCA9557PW,112 provides high-level interface between digital logic systems and various I/O peripherals. It supports two types of I/O devices, namely 5V-tolerant devices (e.g., RS-232 or TTL-level devices) and 3.3V-tolerant devices (e.g., SCC or UART-level devices). This makes the PCA9557PW,112 an ideal solution for transmitting/receiving data asynchronously between different systems.
The PCA9557PW,112 is mainly used in embedded applications due to its low power consumption, wide voltage range, and flexible I/O port. It can be used to control various peripheral devices such as LCDs, VFDs, motors, sensors, and other electronic components. It can also be used to control bus interfaces such as I2C, SPI, SMBus, CANbus, etc. PCA9557PW,112 is also compatible with various microcontrollers.
The PCA9557PW,112 also features two types of logic level shifters. These are used to level shift logic signals from 5V-tolerant devices to 3.3V-tolerant devices, or vice versa. This feature is especially useful for interfacing two different voltage-tolerant devices or environments. Logic level shifters also allow for a larger voltage range, allowing for greater flexibility in interfacing different devices or systems.
In terms of operation, the PCA9557PW,112 is basically a serial-programmable I/O expander. It uses a three-wire interface (clock, data, and strobe lines) to communicate with a host computer or microcontroller. The chip supports three programming modes, namely 8-bit write, 16-bit write, and 8-bit read. In each mode, the chip waits for input data and translates this data into logic level outputs. The PCA9557PW,112 can be programmed using a software driver or via its onboard registers via the I2C interface.
The PCA9557PW,112 is an ideal I/O expander for embedded applications, due to its low power consumption, wide input voltage range, and flexible I/O port. It can be used to control various I/O peripherals, as well as logic level shifters for interfacing two different voltage-tolerant devices or environments. The chip supports three programming modes, making it easy to use, and provides a quick and reliable way to increase the electronic interface of a system.
The specific data is subject to PDF, and the above content is for reference
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