參數(shù)資料
型號(hào)： PCF8574T
廠商： NXP Semiconductors N.V.
元件分類(lèi)： I2C/I2S
英文描述： Remote 8-bit I-O expander for I2C-bus
封裝： PCF8574AP<SOT38-4 (DIP16)|<<http://www.nxp.com/packages/SOT38-4.html<1<Always Pb-free,;PCF8574AT/3<SOT162-1 (SO16)|<<http://www.nxp.com/packages/SOT162-1.html<1<wee
文件頁(yè)數(shù)： 3/24頁(yè)
文件大?。?/td> 132K
代理商： PCF8574T
2002 Nov 22
3
Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I
2
C-bus
PCF8574
1
FEATURES
Operating supply voltage 2.5 to 6 V
Low standby current consumption of 10
μ
A maximum
I
2
C-bus to parallel port expander
Open-drain interrupt output
8-bit remote I/O port for the I
2
C-bus
Compatible with most microcontrollers
Latched outputs with high current drive capability for
directly driving LEDs
Address by 3 hardware address pins for use of up to
8 devices (up to 16 with PCF8574A)
DIP16, or space-saving SO16 or SSOP20 packages.
2
GENERAL DESCRIPTION
ThePCF8574isasiliconCMOScircuit.Itprovidesgeneral
purpose remote I/O expansion for most microcontroller
families via the two-line bidirectional bus (I
2
C-bus).
The device consists of an 8-bit quasi-bidirectional port and
an I
2
C-bus interface. The PCF8574 has a low current
consumption and includes latched outputs with high
current drive capability for directly driving LEDs. It also
possesses an interrupt line (INT) which can be connected
to the interrupt logic of the microcontroller. By sending an
interrupt signal on this line, the remote I/O can inform the
microcontroller ifthere isincomingdataon itsports without
having to communicate via the I
2
C-bus. This means that
the PCF8574 can remain a simple slave device.
The PCF8574 and PCF8574A versions differ only in their
slave address as shown in Fig.10.
3
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
PCF8574P;
PCF8574AP
PCF8574T;
PCF8574AT
PCF8574TS;
PCF8574ATS
DIP16
plastic dual in-line package; 16 leads (300 mil)
SOT38-4
SO16
plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
SSOP20
plastic shrink small outline package; 20 leads; body width 4.4 mm
SOT266-1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF8574T K72741 制造商:NXP Semiconductors 功能描述:
PCF8574T 制造商:NXP Semiconductors 功能描述:IC SM I/O EXPANDER 8-BIT
PCF8574T/3 制造商:NXP Semiconductors 功能描述:I/O Expander 16-Pin SO 制造商:NXP Semiconductors 功能描述:I/O Expander 16-Pin SO Bulk 制造商:NXP Semiconductors 功能描述:I/O EXPANDER 8BIT REMOTE SO-16 制造商:NXP Semiconductors 功能描述:I/O EXPANDER, 8BIT REMOTE, SO-16
PCF8574T/3,512 功能描述:I2C 接口集成電路 REMOTE I/O EXPANDER RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16
PCF8574T/3,518 功能描述:接口-I/O擴(kuò)展器 I/O EXPANDER I2C RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
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