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PCF8574RGT, in 3D

PCF8574RGT

Texas Instruments

-40℃~+85℃ 100kHz 10uA 1mA 2.5V~6V 25mA 8 I2C Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver WQFN-16-EP(3x3) I/O Expanders ROHS

Extended
DatasheetJLCPCBLCSCti/PCF8574RGT
Category
I, O Expanders
Package
WQFN-16-EP(3x3)
Pins
17

Overview

The PCF8574RGT is an i, O Expander made by Texas Instruments in a WQFN-16-EP(3x3) package with 17 pins. -40℃~+85℃ 100kHz 10uA 1mA 2.5V~6V 25mA 8 I2C Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver WQFN-16-EP(3x3) I/O Expanders ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:HT8574ARQZ, from EasyEDA) and its footprint (EasyEDA_Cloud:TQFN-16_L3.0-W3.0-P0.50-TL-EP1.6, from EasyEDA), ready for a KiCad board. 2,834 are in stock at JLCPCB (part C2652270). 1 open-source board in 1 repository on GitHub use it.

Symbol

VCC1A02A13A24P05P16P27P38GND9P410P511P612P713INT#14SCL15SDA16EP17
EasyEDA_Cloud:HT8574ARQZFrom EasyEDA

Footprint

17
EasyEDA_Cloud:TQFN-16_L3.0-W3.0-P0.50-TL-EP1.6From EasyEDA

From the datasheet

13
Supply, least
2.5 V · VCC, recommended operating min · p. 4
Supply, most
6 V · VCC, recommended operating max · p. 4
Supply, absolute maximum
6.5 V · VCC, absolute maximum · p. 4
Works from
-40 °C · Operating free-air temperature min · p. 4
Works up to
85 °C · Operating free-air temperature max · p. 4
Junction, hottest
150 °C · Junction temperature absolute maximum · p. 4
Takes working
40 µA · VCC operating current typical, inputs at VCC or GND, unloaded, fSCL = 100 kHz · p. 5
Takes at most
100 µA · VCC operating current max, inputs at VCC or GND, unloaded, fSCL = 100 kHz · p. 5
Takes asleep
2.5 µA · VCC standby current typical, inputs at VCC or GND, unloaded · p. 5
A pin gives at most
50 mA · Continuous output low current absolute maximum, VO = 0 to VCC · p. 4
Junction to air (RGT)
56 K/W · Junction-to-ambient thermal resistance · p. 4
Junction to case (RGT)
67.4 K/W · Junction-to-case (top) thermal resistance · p. 4
Junction to board (RGT)
31.2 K/W · Junction-to-board thermal resistance · p. 4

What it is and has

4
Interface
I2C to parallel-port expander · p. 1
Interrupt
Open-drain interrupt output · p. 1
I/O port
8-bit quasi-bidirectional, P0–P7 · p. 1
Package
VQFN (RGT, 16), 3mm × 3mm · p. 1

Specifications

54
ParameterConditionsAs printedPage
Supply voltage range VCCover operating free-air temperature rangemin -0.5 · max 6.5 V4
Input voltage range(2) VIover operating free-air temperature rangemin -0.5 V4
Output voltage range(2) VOover operating free-air temperature rangemin -0.5 V4
Input clamp current IIKVI < 0max -20 mA4
Output clamp current IOKVO < 0max -20 mA4
Continuous output low current IOLVO = 0 to VCCmax 50 mA4
Continuous output high current IOHVO = 0 to VCCmax -4 mA4
Junction temperature TJmax 150 °C4
Storage temperature range Tstgmin -65 · max 150 °C4
Electrostatic discharge V(ESD)Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)max 1500 V4
Electrostatic discharge V(ESD)Charged-device model (CDM), per JEDEC specification JESD22-C101 (2)max 2000 V4
Supply voltage VCCmin 2.5 · max 6 V4
Low-level input voltage VILmin -0.5 V4
High-level output current IOHmax -1 mA4
Low-level output current IOLmax 25 mA4
Operating free-air temperature TAmin -40 · max 85 °C4
Junction-to-ambient thermal resistance RθJAPCF8574, RGT, 16 PINStyp 56 °C/W4
Junction-to-case (top) thermal resistance RθJC(top)PCF8574, RGT, 16 PINStyp 67.4 °C/W4
Junction-to-board thermal resistance RθJBPCF8574, RGT, 16 PINStyp 31.2 °C/W4
Junction-to-top characterization parameter ψJTPCF8574, RGT, 16 PINStyp 3.9 °C/W4
Junction-to-board characterization parameter ψJBPCF8574, RGT, 16 PINStyp 31.1 °C/W4
Junction-to-case (bottom) thermal resistance RθJC(bot)PCF8574, RGT, 16 PINStyp 15.1 °C/W4
Input diode clamp voltage VIKII = –18 mA; VCC = 2.5 V to 6 Vmin -1.2 V5
Power-on reset voltage VPORVI = VCC or GND, IO = 0; VCC = 6 Vtyp 1.3 · max 2.4 V5
P port IOHVO = GND; VCC = 2.5 V to 6 Vmin -310 · max -30 uA5
P port transient pullup current IOHTHigh during acknowledge, VOH = GND; VCC = 2.5 Vtyp -1 mA5
SDA IOLVO = 0.4 V; VCC = 2.5 V to 6 Vmin 3 mA5
P port IOLVO = 1 V; VCC = 5 Vmin 10 · typ 25 mA5
INT IOLVO = 0.4 V; VCC = 2.5 V to 6 Vmin 1.6 mA5
Operating mode ICCVI = VCC or GND, IO = 0, fSCL = 100 kHz; VCC = 6 V; typical values at VCC = 5 V, TA = 25°Ctyp 40 · max 100 uA5
Standby mode ICCVI = VCC or GND, IO = 0; VCC = 6 V; typical values at VCC = 5 V, TA = 25°Ctyp 2.5 · max 10 uA5
SCL CiVI = VCC or GND; VCC = 2.5 V to 6 Vtyp 1.5 · max 7 pF5
SDA CioVIO = VCC or GND; VCC = 2.5 V to 6 Vtyp 3 · max 7 pF5
P port CioVIO = VCC or GND; VCC = 2.5 V to 6 Vtyp 4 · max 10 pF5
I2C clock frequency fsclover recommended operating free-air temperature rangemax 100 kHz5
I2C clock high time tschmin 4 us5
I2C clock low time tsclmin 4.7 us5
I2C spike time tspmax 70 ns5
I2C serial data setup time tsdsmin 250 ns5
I2C serial data hold time tsdhmin 0 ns5
I2C input rise time ticrmax 1 us5
I2C input fall time ticfmax 0.3 us5
I2C output fall time (10-pF to 400-pF bus) tocfmax 300 ns5
I2C bus free time between stop and start tbufmin 4.7 us5
I2C start or repeated start condition setup tstsmin 4.7 us5
I2C start or repeated start condition hold tsthmin 4 us5
I2C stop condition setup tspsmin 4 us5
Valid data time tvdSCL low to SDA output validmax 3.4 us5
I2C bus capacitive load Cbmax 400 pF5
Output data valid tpvSCL to P port; over recommended operating free-air temperature range, CL ≤ 100 pFmax 4 us6
Input data setup time tsuP port to SCL; over recommended operating free-air temperature range, CL ≤ 100 pFmin 0 us6
Input data hold time thP port to SCL; over recommended operating free-air temperature range, CL ≤ 100 pFmin 4 us6
Interrupt valid time tivP port to INT; over recommended operating free-air temperature range, CL ≤ 100 pFmax 4 us6
Interrupt reset delay time tirSCL to INT; over recommended operating free-air temperature range, CL ≤ 100 pFmax 4 us6

Pins, by the datasheet

16
1 VCC
Voltage supply. · p. 3
2 A0
Address input 0; connect directly to VCC or ground, without a pullup resistor. · p. 3
3 A1
Address input 1; connect directly to VCC or ground, without a pullup resistor. · p. 3
4 A2
Address input 2; connect directly to VCC or ground, without a pullup resistor. · p. 3
5 P0
P-port input/output; push-pull design structure. · p. 3
6 P1
P-port input/output; push-pull design structure. · p. 3
7 P2
P-port input/output; push-pull design structure. · p. 3
8 P3
P-port input/output; push-pull design structure. · p. 3
9 GND
Ground. · p. 3
10 P4
P-port input/output; push-pull design structure. · p. 3
11 P5
P-port input/output; push-pull design structure. · p. 3
12 P6
P-port input/output; push-pull design structure. · p. 3
13 P7
P-port input/output; push-pull design structure. · p. 3
14 INT
Interrupt output; connect to VCC through a pullup resistor. · p. 3
15 SCL
Serial clock line; connect to VCC through a pullup resistor. · p. 3
16 SDA
Serial data line; connect to VCC through a pullup resistor. · p. 3

Parameters

21
Clock Frequency
100kHz
Current - Output High(IOH)
1mA
Current - Output Low(IOL)
25mA
Current - Supply
40uA
Current - Supply(Max)
100uA
Features
Built-in LED driver
Interface
I2C
Interrupt Output
Interrupt Output
Junction Temperature(Max)
150℃
Number of I/O
8
Number of Supporting Devices
8
Operating Temperature
-40℃~+85℃
Output Current per Pin(Max)
50mA
Output Type
Push-Pull
Quiescent Supply Current
10uA
Standby Current
2.5uA
Thermal Resistance(Junction to Ambient)
56℃/W
Thermal Resistance(Junction to Board)
31.2℃/W
Thermal Resistance(Junction to Case)
67.4℃/W
Voltage - Supply
2.5V~6V
Voltage - Supply(Absolute Max)
6.5V

Order codes

1

Pinout

17
The pins of the PCF8574RGT
PinNameType
1VCCUnspecified
2A0Unspecified
3A1Unspecified
4A2Unspecified
5P0Unspecified
6P1Unspecified
7P2Unspecified
8P3Unspecified
9GNDUnspecified
10P4Unspecified
11P5Unspecified
12P6Unspecified
13P7Unspecified
14INT#Unspecified
15SCLUnspecified
16SDAUnspecified
17EPUnspecified

Open-source boards using it

All 1
  • 2 layers56 × 23.5 mmZhonx Platine, the printed circuit board in 3D

    Zhonx Platine

    BGCX261/zhonx3-kicad-git

    35 parts

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Questions

Is there a KiCad symbol and footprint for the PCF8574RGT?

Yes. The symbol is EasyEDA_Cloud:HT8574ARQZ and the footprint EasyEDA_Cloud:TQFN-16_L3.0-W3.0-P0.50-TL-EP1.6, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the PCF8574RGT?

WQFN-16-EP(3x3), with 17 pins. Its footprint is drawn on this page.

Where is the PCF8574RGT datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the PCF8574RGT?

JLCPCB lists it as part C2652270, with 2,834 in stock; the sellers' links on this page open their listings.

What can replace the PCF8574RGT?

Parts like it in the library: the PCF8574T/3,518 by NXP Semiconductors, the PCF8574APWR by Texas Instruments, the PCF8574T/TR by HGSEMI and the PCF8574DWR by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the PCF8574RGT?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8