PCF8574PWR PCF8574ADWR 6 V Uart Expander IC , Uart Multiplexer IC I/O Expanders 8bit I/O Expndr
uart multiplexer ic
,uart level shifter ic
PCF8574PWR PCF8574ADWR UART Interface IC I/O Expanders 8bit I/O Expndr
1 Features
- Low Standby-Current Consumption of 10 μA Max
-
I2C to Parallel-Port Expander
-
Open-Drain Interrupt Output
-
Compatible With Most Microcontrollers
-
Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
-
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
2 Applications
-
Telecom Shelters: Filter Units
-
Servers
-
Routers (Telecom Switching Equipment)
-
Personal Computers
-
Personal Electronics
-
Industrial Automation
-
Products with GPIO-Limited Processors
3 Description
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.
The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C interface [serial clock (SCL), serial data (SDA)].
The device features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high- current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. At power on, the I/Os are high. In this mode, only a current source to VCC is active.
Device Information
|
PART NUMBER |
PACKAGE (PIN) |
BODY SIZE (NOM) |
|
PCF8574 |
TVSOP (20) |
5.00 mm × 4.40 mm |
|
SOIC (16) |
10.30 mm × 7.50 mm |
|
|
PDIP (16) |
19.30 mm × 6.35 mm |
|
|
TSSOP (20) |
6.50 mm × 4.40 mm |
|
|
QFN (16) |
3.00 mm × 3.00 mm |
|
|
VQFN (20) |
4.50 mm × 3.50 mm |
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