PCA9554A

Name: PCA9554A
Brand: TI
SKU: PCA9554A
Price: 0.506 USD

現行

具中斷、弱推拉和配置暫存器的 8 位元 2.3 至 5.5-V I2C/SMBus I/O 擴展器

立即訂購

產品規格表

document-pdfAcrobat PCA9554A Remote 8-Bit I2C and SMBus I/O Expander With Interrupt Output and Configuration Registers datasheet (Rev. F) (英文) PDF | HTML

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TCA9554A

現行

具中斷、弱推拉和配置暫存器的 8 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器 Performance enhancements for power-on reset, interrupt, and lower voltage operation.

PCA9554A

現行

產品規格表

立即訂購

產品詳細資料

Number of I/Os

8

Features

Configuration registers, Interrupt pin

Supply voltage (min) (V)

2.3

Supply voltage (max) (V)

5.5

Addresses

8

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

Number of I/Os

8

Features

Configuration registers, Interrupt pin

Supply voltage (min) (V)

2.3

Supply voltage (max) (V)

5.5

Addresses

8

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

SOIC (DW)

16

106.09 mm² 10.3 x 10.3

SSOP (DB)

16

48.36 mm² 6.2 x 7.8

SSOP (DBQ)

16

29.4 mm² 4.9 x 6

TVSOP (DGV)

16

23.04 mm² 3.6 x 6.4

VQFN (RGT)

16

9 mm² 3 x 3

VQFN (RGV)

16

16 mm² 4 x 4

I²C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
Operating Power-Supply Voltage Range of 2.3 V to 5.5 V
5-V Tolerant I/Os
400-kHz Fast I²C Bus
Three Hardware Address Pins Allow up to Eight Devices on the I²C/SMBus
Input/Output Configuration Register
Polarity Inversion Register
Internal Power-On Reset
Power-Up With All Channels Configured as Inputs
No Glitch on Power Up
Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

I²C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
Operating Power-Supply Voltage Range of 2.3 V to 5.5 V
5-V Tolerant I/Os
400-kHz Fast I²C Bus
Three Hardware Address Pins Allow up to Eight Devices on the I²C/SMBus
Input/Output Configuration Register
Polarity Inversion Register
Internal Power-On Reset
Power-Up With All Channels Configured as Inputs
No Glitch on Power Up
Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

The PCA9554A open-drain interrupt ( INT) output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I²C bus. Thus, the PCA9554A can remain a simple slave device.

The device’s outputs (latched) have high-current drive capability for directly driving LEDs and low current consumption.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I²C address and allow up to eight devices to share the same I²C bus or SMBus.

The PCA9554A is pin-to-pin and I²C address compatible with the PCF8574A. However, software changes are required, due to the enhancements in the PCA9554A over the PCF8574A.

The PCA9554A and PCA9554 are identical except for their fixed I²C address. This allows for up to 16 of these devices (8 of each) on the same I²C/SMBus.

The PCA9554A open-drain interrupt ( INT) output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I²C bus. Thus, the PCA9554A can remain a simple slave device.

The device’s outputs (latched) have high-current drive capability for directly driving LEDs and low current consumption.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I²C address and allow up to eight devices to share the same I²C bus or SMBus.

The PCA9554A is pin-to-pin and I²C address compatible with the PCF8574A. However, software changes are required, due to the enhancements in the PCA9554A over the PCF8574A.

The PCA9554A and PCA9554 are identical except for their fixed I²C address. This allows for up to 16 of these devices (8 of each) on the same I²C/SMBus.

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	類型	標題		日期
*	Data sheet	PCA9554A Remote 8-Bit I2C and SMBus I/O Expander With Interrupt Output and Configuration Registers datasheet (Rev. F)	PDF \| HTML	2021年 3月 12日
	Application note	Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A)	PDF \| HTML	2024年 7月 3日
	Application note	I2C Dynamic Addressing		2019年 4月 25日
	Selection guide	Logic Guide (Rev. AB)		2017年 6月 12日
	Application note	Choosing the Correct I2C Device for New Designs	PDF \| HTML	2016年 9月 7日
	Application note	Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)		2015年 12月 2日
	Application note	Understanding the I2C Bus	PDF \| HTML	2015年 6月 30日
	Application note	Maximum Clock Frequency of I2C Bus Using Repeaters		2015年 5月 15日
	Application note	I2C Bus Pull-Up Resistor Calculation	PDF \| HTML	2015年 2月 13日
	Application note	Programming Fun Lights With TI's TCA6507		2007年 11月 30日
	Application note	Semiconductor Packing Material Electrostatic Discharge (ESD) Protection		2004年 7月 8日

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封裝	針腳	CAD 符號、佔位空間與 3D 模型
SOIC (DW)	16	Ultra Librarian
SSOP (DB)	16	Ultra Librarian
SSOP (DBQ)	16	Ultra Librarian
TVSOP (DGV)	16	Ultra Librarian
VQFN (RGT)	16	Ultra Librarian
VQFN (RGV)	16	Ultra Librarian

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PCA9554A

具中斷、弱推拉和配置暫存器的 8 位元 2.3 至 5.5-V I2C/SMBus I/O 擴展器

現在提供此產品的更新版本

可直接投入的替代產品，相較於所比較的裝置，具備升級功能

PCA9554A

產品詳細資料

技術文件

設計與開發

I2C-DESIGNER — I2C 設計工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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