PCF8574 Selling Leads, Price trend, PCF8574 DataSheet download, circuit diagram from SeekIC.com

Features: *Low Standby-Current Consumption of 10 µA Maximum* 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...

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SeekIC No. : 004456457 Detail

PCF8574: Features: *Low Standby-Current Consumption of 10 µA Maximum* I2C to Parallel-Port Expander* Open-Drain Interrupt Output* Compatible With Most Microcontrollers* Latched Outputs With High-Curren...

PCF8574 Data Sheet

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Part Number:: PCF8574
Supply Ability:: 5000

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Upload time: 2024/11/25

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Product Details

Description

Features:

* Low Standby-Current Consumption of
    10 µA Maximum
* 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

Pinout

Connection Diagram

Specifications

Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . .−0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20 mA
Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−20 mA
Input/Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . .. ±400 µA
Continuous output low current, IOL (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . .50 mA
Continuous output high current, IOH (VO = 0 to VCC) . . . . . . . . . . . . . . . . . −4 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . .. . ±100 mA
Package thermal impedance, JA (see Note 2): DGV package . . . . . . . . . . .92°C/W
(see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .57°C/W
(see Note 2): N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .67°C/W
(see Note 2): PW package . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .83°C/W
(see Note 3): RGY package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . .−65°C to 150°C

Description

This 8-bit input/output (I/O) expander PCF8574 for the two-line bidirectional bus (I2C) is designed for 2.5-V to 6-V VCC operation.

The PCF8574 provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].

PCF8574 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 PCF8574, only a current source to VCC is active. An additional strong pullup to VCC allows fast rising edges into heavily loaded outputs. This device turns on when an output is written high and is switched off by the negative edge of SCL. The I/Os PCF8574 should be high before being used as inputs.

PCF8574

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