Product Summary

The PCF8575DBQ is a remote 16-BIT I2C and SMBus I/O expander. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface serial clock (SCL) and serial data (SDA). The PCF8575DBQ features a 16-bit quasi-bidirectional input/output (I/O) port (P07–P00, P17–P10), 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 PCF8575DBQ turns on when an output is written high and is switched off by the negative edge of SCL. The I/Os should be high before being used as inputs.

Parametrics

PCF8575CDBQR absolute maximum ratings: (1)Supply voltage range, VCC: -0.5 to 6.5 V; (2)Input voltage range, VI: -0.5 VCC + 0.5 V; (3)Output voltage range, VO: –0.5 VCC + 0.5 V; (4)Input clamp current, VI < 0 ,IIK: -20 mA; (5)Output clamp current, VO < 0, IOK: -20 mA; (6)Input/output clamp current, VO < 0 or VO > VCC, IOK: -20 mA; (7)Continuous output low current, VO = 0 to VCC, IOL: 50 mA; (8)Continuous output high current, VO = 0 to VCC, IOH: -4 mA; (9)Continuous current through VCC or GND: ±100 mA; (10)Storage temperature range, Tstg: -65 to 150℃.

Features

PCF8575CDBQR 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; (7)ESD Protection Exceeds JESD 22; (8)400-kHz Fast I2C Bus; (9)Address by Three Hardware Address Pins for Use of up to Eight Devices.

Diagrams

PCF8575CDBQR diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
PCF8575CDBQR
PCF8575CDBQR

Texas Instruments

I/O Expanders, Repeaters & Hubs Remote 16-Bit I2C & SMBus I/O Expander

Data Sheet

0-2050: $0.66
2050-2500: $0.66
PCF8575CDBQRE4
PCF8575CDBQRE4

Texas Instruments

I/O Expanders, Repeaters & Hubs Remote 16-Bit I2C & SMBus I/O Expander

Data Sheet

0-1980: $0.68
1980-2000: $0.67
2000-2500: $0.67
2500-5000: $0.67
PCF8575CDBQRG4
PCF8575CDBQRG4

Texas Instruments

I/O Expanders, Repeaters & Hubs Remote 16-Bit I2C & SMBus I/O Expander

Data Sheet

0-1980: $0.68
1980-2000: $0.67
2000-2500: $0.67
2500-5000: $0.67