Datasheet > PCA9557PW,118

PCA9557PW,118

更新时间： 2023-02-26 13:39:21

品牌	Logo	应用领域
恩智浦 - NXP		PC
页数	文件大小	规格书
30页	282K
描述
PCA9557 - 8-bit I2C-bus and SMBus I/O port with reset TSSOP 16-Pin

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PCA9557PW,118 数据手册

PCA9557

8-bit I²C-bus and SMBus I/O port with reset

Rev. 7 — 10 December 2013

Product data sheet

1. General description

The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for

SMBus and I²C-bus applications. The PCA9557 consists of an 8-bit input port register,

8-bit output port register, and an I²C-bus/SMBus interface. It has low current consumption

and a high-impedance open-drain output pin, IO0.

The system master can enable the PCA9557’s I/O as either input or output by writing to

the configuration register. The system master can also invert the PCA9557 inputs by

writing to the active HIGH polarity inversion register. Finally, the system master can reset

the PCA9557 in the event of a time-out by asserting a LOW in the reset input.

The power-on reset puts the registers in their default state and initializes the

I²C-bus/SMBus state machine. The RESET pin causes the same reset/initialization to

occur without de-powering the part.

2. Features and benefits

 Lower voltage, higher performance migration path for the PCA9556

 8 general purpose input/output expander/collector

 Input/output configuration register

 Active HIGH polarity inversion register

 I²C-bus and SMBus interface logic

 Internal power-on reset

 Noise filter on SCL/SDA inputs

 Active LOW reset input

 3 address pins allowing up to 8 devices on the I²C-bus/SMBus

 High-impedance open-drain on IO0

 No glitch on power-up

 Power-up with all channels configured as inputs

 Low standby current

 Operating power supply voltage range of 2.3 V to 5.5 V

 5 V tolerant inputs/outputs

 0 kHz to 400 kHz clock frequency

 ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per

JESD22-C101

 Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

 Three packages offered: SO16, TSSOP16, HVQFN16

12 3 4 5 6 7...30

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PCA9557PW,118 替代型号

型号	品牌	替代类型	描述	数据表
PCA9538PW,118	NXP	完全替代	PCA9538 - 8-bit I²C-bus and SMBus low power I
PCA9538PW,112	NXP	完全替代	PCA9538 - 8-bit I²C-bus and SMBus low power I

与PCA9557PW,118相关器件

型号	品牌	获取价格	描述	数据表
PCA9557PW/G,118	NXP	获取价格	PCA9557 - 8-bit I2C-bus and SMBus I/O port with reset TSSOP 16-Pin
PCA9557PWG4	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS
PCA9557PWR	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS
PCA9557PWRG4	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS
PCA9557PWT	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS
PCA9557PW-T	NXP	获取价格	IC 8 I/O, PIA-GENERAL PURPOSE, PDSO16, 4.40 MM, PLASTIC, MO-153, SOT403-1, TSSOP-16, Paral
PCA9557PWTG4	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS
PCA9557RGVR	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS
PCA9557RGVRG4	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS
PCA9557RGYR	TI	获取价格	REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH RESET AND CONFIGURATION REGISTERS

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