PCA9535PWR

Product Summary

This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. The PCA9535PWR consists of two 8-bit configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active-high or active-low operation) registers. At power on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output Port register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master. The system master can reset the PCA9535PWR in the event of a timeout or other improper operation by utilizing the power-on reset feature, which puts the registers in their default state and initializes the I2C/SMBus state machine. The PCA9535PWR open-drain interrupt (INT) output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed.

Parametrics

Absolute maximum ratings: (1)Supply voltage range, VCC: –0.5 to 6V; (2)Input voltage range, VI: –0.5 to 6V; (3)Output voltage range, Vo: –0.5 to 6V; (4)Input clamp current, VI < 0, IIK: –20mA; (5)Output clamp current, VO<0, IOK: –20mA; (6)Input/output clamp current, VO<0 or VO>VCC, IIOK: ±20mA; (7)Continuous output low current, VO=0 to VCC, IOL: 50mA; (8)Continuous output high current, VO=0 to VCC, IOH: –50mA; (9)Continuous current through GND, ICC: –250mA; (10)Continuous current through VCC, ICC: 160mA; (11)Package thermal impedance, junction to pad RGE package, θJP: 1.5℃/W; (12)Storage temperature range, Tstg: –65 to 150℃.

Features

Features: (1)Low Standby-Current Consumption of 1 mA Max; (2)Polarity Inversion Register; (3)Latched Outputs With High-Current Drive Capability for Directly Driving LEDs; (4)I2C to Parallel Port Expander ; (5)Open-Drain Active-Low Interrupt Output; (6)Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II; (7)5-V Tolerant I/O Ports ; (8)Compatible With Most Microcontrollers; (9)400-kHz Fast I2C Bus ; (10)Address by Three Hardware Address Pins for Use of up to Eight Devices; (11)ESD Protection Exceeds JESD 22.

Diagrams