PCF8574
REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
www.ti.com
SCPS068F–JULY 2001–REVISED OCTOBER 2006
FEATURES
•
Low Standby-Current Consumption of
10 µA Max
I2C to Parallel-Port Expander
•
•
Latched Outputs With High-Current Drive
Capability for Directly Driving LEDs
•
•
•
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
Open-Drain Interrupt Output
Compatible With Most Microcontrollers
RGY PACKAGE
(TOP VIEW)
DGV OR PW PACKAGE
(TOP VIEW)
RGT PACKAGE
DW OR N PACKAGE
(TOP VIEW)
(TOP VIEW)
1
20
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
INT
SCL
NC
P7
P6
19
18
17
16
15
14
13
12
2
3
4
5
6
7
8
9
SCL
NC
SDA
P6
NC
P5
P4
GND
P3
V
SDA
A0
A1
A2
P0
P1
P2
P3
1
2
3
4
5
6
7
8
16
15
CC
NC
P5
P4
GND
P3
14 SCL
VCC
A0
A1
A2
1
2
3
4
12 P6
11 P5
10 P4
SDA
V
CC
INT
P7
P6
P5
P4
13
12
11
10
9
V
CC
A0
A1
NC
A2
A0
A1
NC
A2
P0
9
GND
NC
P2
NC
P2
P1
GND
10
11
NC – No internal connection
NC – No internal connection
DESCRIPTION/ORDERING INFORMATION
This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 6-V VCC
operation.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
PCF8574N
TOP-SIDE MARKING
PCF8574N
PDIP – N
Tube of 25
PCF8574NE4
QFN – RGT
QFN – RGY
Reel of 3000
Reel of 1000
PCF8574RGTR
PCF8574RGYR
PCF8574RGYRG4
PCF8574DW
ZWJ
PF574
Tube of 40
PCF8574DWE4
PCF8574DWR
SOIC – DW
PCF8574
–40°C to 85°C
Reel of 2000
Tube of 70
PCF8574DWRE4
PCF8574PW
PCF8574PWE4
PCF8574PWR
TSSOP – PW
TVSOP – DGV
PF574
PF574
Reel of 2000
Reel of 2000
PCF8574PWRE4
PCF8574DGVR
PCF8574DGVRE4
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2001–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.