Product Summary

The PCF8574ATD-T is a Remote 8-bit I/O expander. It provides general purpose remote I/O expansion for most microcontroller families via the I2C interface. The PCF8574ATD-T 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. The PCF8574ATD-T provides an open-drain output (INT) that can be connected to the interrupt input of a microcontroller.

Parametrics

PCF8574ATD-T absolute maximum ratings: (1)VCC Supply voltage range: –0.5 to 7 V; (2)VI Input voltage range: –0.5 to VCC + 0.5 V; (3)VO Output voltage range: –0.5 to VCC + 0.5 V; (4)IIK Input clamp current VI < 0: –20 mA; (5)IOK Output clamp current VO < 0: –20 mA; (6)IOK Input/output clamp current VO < 0 or VO > VCC: ±400 mA; (7)IOL Continuous output low current VO = 0 to VCC: 50 mA; (8)IOH Continuous output high current VO = 0 to VCC: –4 mA; (9)Continuous current through VCC or GND: ±100 mA; (10)Tstg Storage temperature range: –65 to 150 ℃.

Features

PCF8574ATD-T features: (1)Low Standby-Current Consumption of 10 μA Max; (2)Latched Outputs With High-Current Drive Capability for Directly Driving LEDs; (3)I2C to Parallel-Port Expander; (4)Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II; (5)Open-Drain Interrupt Output ; (6)Compatible With Most Microcontrollers.

Diagrams

PCF8574ATD-T block diagram

PCF80
PCF80

Other


Data Sheet

Negotiable 
PCF84C00
PCF84C00

Other


Data Sheet

Negotiable 
PCF84C12A
PCF84C12A

Other


Data Sheet

Negotiable 
PCF84C12AP
PCF84C12AP

Other


Data Sheet

Negotiable 
PCF84C21A
PCF84C21A

Other


Data Sheet

Negotiable 
PCF84C22A
PCF84C22A

Other


Data Sheet

Negotiable