PCF8584

Features:

· Parallel-bus to I2C-bus protocol converter and interface
· Compatible with most parallel-bus microcontrollers/microprocessors including 8049, 8051, 6800, 68000 and Z80
· Both master and slave functions
· Automatic detection and adaption to bus interface type
· Programmable interrupt vector
· Multi-master capability
· I2C-bus monitor mode
· Long-distance mode (4-wire)
· Operating supply voltage 4.5 to 5.5 V
· Operating temperature range: -40 to +85 °C.


Pinout




Specifications

SYMBOL	PARAMETER	MIN.	MIN.	UNIT
VCC	Supply voltage	-0.3	+7.0	V
VI	voltage range (any input)	-0.8	VDD +7.0	V
II	DC input current (any input)	-10	+10	mA
IO	DC output current (any output)	-10	+10	mA
Ptot	total power dissipation	-	300	mW
PO	power dissipation per output	-	50	mW
Tamb	Operating free-air temperature	-40	+85
Tstg	Storage temperature	-65	+150

Description

The PCF8584 is an integrated circuit designed in CMOS technology which serves as an interface between most standard parallel-bus microcontrollers/microprocessors and the serial I2C-bus. The PCF8584 provides both master and slave functions.

Communication with the I2C-bus is carried out on a byte-wise basis using interrupt or polled handshake. It controls all the I2C-bus specific sequences, protocol, arbitration and timing. The PCF8584 allows parallel-bus systems to communicate bidirectionally with the I2C-bus.