PCA9557D: 带有复位的8位I2C总线和SMBus I/O端口 _ BDTIC 中国领先电子元器件代理商

PCA9557是一款硅CMOS电路，为SMBus和I²C总线应用提供并行输入/输出扩展。PCA9557由8位输入端口寄存器、8位输出端口寄存器和I²C总线/SMBus接口组成。具有低电流消耗和高阻抗开漏输出引脚IO0。

通过写入I/O配置寄存器，系统主器件可将PCA9557的I/O用作输入或输出。通过写入高电平有效的极性反转寄存器，系统主器件还可反转PCA9557输入。最后，通过在复位输入中加入低电平，系统主器件可在超时时使PCA9557复位。

上电复位会将寄存器设为其默认状态并初始化I²C总线/SMBus状态机。1引脚可引发相同的复位/初始化而无需使部件断电。

名称/描述	Modified Date
8-bit I2C-bus and SMBus I/O port with reset (REV 7.0) PDF (282.0 kB) PCA9557 [English]	10 Dec 2013

名称/描述	Modified Date
Driving stepper motors using NXP® I2C-bus GPIO expanders (REV 2.0) PDF (275.0 kB) AN10814 [English]	24 Oct 2011
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus (REV 1.0) PDF (90.0 kB) AN256 [English]	23 Mar 2009
Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 [English]	20 Jun 2007
I2C/SMBus general purpose I/O expanders (REV 2.0) PDF (294.0 kB) AN469 [English]	20 Jan 2005
PCA954X FAMILY OF I²C / SMBus MULTIPLEXERS and SWITCHES (REV 2.0) PDF (807.0 kB) AN262 [English]	01 Oct 2004
I2C manual (REV 1.0) PDF (4.2 MB) AN10216 [English]	27 Mar 2003

名称/描述	Modified Date
I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 [English]	28 Apr 2014
I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA [English]	03 Apr 2013
PCA9698 demonstration board OM6281 (REV 1.0) PDF (558.0 kB) UM10267 [English]	26 Sep 2008
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 [English]	13 Jun 2006

名称/描述	Modified Date
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 [English]	01 Aug 2014
Convenient parallel I/O expansion or collection via the I2C/SMBus; NXP® Octal SMBus registered interface... (REV 1.2) PDF (377.0 kB) 750_16534 [English]	01 Aug 2008
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... (REV 1.0) PDF (1.1 MB) 75016543 [English]	01 Jun 2008

名称/描述	Modified Date
plastic small outline package; 16 leads; body width 3.9 mm (REV 1.0) PDF (192.0 kB) SOT109-1 [English]	08 Feb 2016

名称/描述	Modified Date
SO16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 4.0) PDF (210.0 kB) SOT109-1_118 [English]	24 Apr 2013

名称/描述	Modified Date
design_con_2003_tecforum_i2c_b_1 (REV 0.1) PDF (4.2 MB) DESIGN_CON_2003_TECFORUM_I2C_B_1 [English]	27 Jan 2003

名称/描述	Modified Date
Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English]	08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English]	08 Oct 2009

Expert mode sample code for PCA9557 (REV 1.0) TXT 8-BIT-PCA9557-TOTEM-POLE-READ- 12/10/2014

型号	状态	No of bits	V_DD [min] (V)	V_DD [max] (V)	Over volt tolerant	No of supplies	Standby current [typ] (µA)	Max Sink Current per bit (mA)	Max Sink Current, per package (mA)	Source Current per bit (mA)	Reset input pin	Output mode	Input mode: invert option	I2C-bus (kHz)	Footprint body and leads (mm2)	Package name	Package version	Operating Temperature (Cel)	No of Addresses	Remark
PCA9557D	Active	8	2.3	5.5	Y	1	0.25	25	100	20	Y	Totem Pole/Open Drain	Y	400	56.84	SO16	SOT109-1	-40~85	8	Only bit 0 is open drain
PCA9557D/DG	No Longer Manufactured	8	2.3	5.5	Y	1	0.25	25	100	20	Y	Totem Pole/Open Drain	Y	400	56.84	SO16	SOT109-1	-40~85	8	Only bit 0 is open drain
PCA9557D/G	No Longer Manufactured	8	2.3	5.5	Y	1	0.25	25	100	20	Y	Totem Pole/Open Drain	Y	400	56.84	SO16	SOT109-1	-40~85	8	Only bit 0 is open drain

产品编号	封装说明	Outline Version	回流/波峰焊接	包装	产品状态	部件编号订购码 (12NC)	Marking	化学成分	RoHS / 无铅 / RHF	无铅转换日期	EFR	IFR(FIT)	MTBF（小时）	MSL	MSL LF
PCA9557D		SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1	Active	PCA9557D,118 (9352 706 74118)	PCA9557D	PCA9557D		week 6, 2004	0.0	2.0	5E8	1	1
PCA9557D		SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE	Bulk Pack	Active	PCA9557D,112 (9352 706 74112)	PCA9557D	PCA9557D		week 6, 2004	0.0	2.0	5E8	1	1