PCF8574P NXP Semiconductors, PCF8574P Datasheet - Page 3

PCF8574P

Manufacturer Part Number
PCF8574P
Description
Manufacturer
NXP Semiconductors
Datasheet

Specifications of PCF8574P

Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Package Type
PDIP
Rad Hardened
No
Lead Free Status / Rohs Status
Compliant

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Philips Semiconductors
1
2
The PCF8574 is a silicon CMOS circuit. It provides general
purpose remote I/O expansion for most microcontroller
families via the two-line bidirectional bus (I
3
2002 Nov 22
PCF8574P;
PCF8574AP
PCF8574T;
PCF8574AT
PCF8574TS;
PCF8574ATS
TYPE NUMBER
Operating supply voltage 2.5 to 6 V
Low standby current consumption of 10 A maximum
I
Open-drain interrupt output
8-bit remote I/O port for the I
Compatible with most microcontrollers
Latched outputs with high current drive capability for
directly driving LEDs
Address by 3 hardware address pins for use of up to
8 devices (up to 16 with PCF8574A)
DIP16, or space-saving SO16 or SSOP20 packages.
Remote 8-bit I/O expander for I
2
C-bus to parallel port expander
FEATURES
GENERAL DESCRIPTION
ORDERING INFORMATION
SSOP20
NAME
DIP16
SO16
2
C-bus
plastic dual in-line package; 16 leads (300 mil)
plastic small outline package; 16 leads; body width 7.5 mm
plastic shrink small outline package; 20 leads; body width 4.4 mm
2
C-bus).
2
C-bus
3
DESCRIPTION
The device consists of an 8-bit quasi-bidirectional port and
an I
consumption and includes latched outputs with high
current drive capability for directly driving LEDs. It also
possesses an interrupt line (INT) which can be connected
to the interrupt logic of the microcontroller. By sending an
interrupt signal on this line, the remote I/O can inform the
microcontroller if there is incoming data on its ports without
having to communicate via the I
the PCF8574 can remain a simple slave device.
The PCF8574 and PCF8574A versions differ only in their
slave address as shown in Fig.10.
PACKAGE
2
C-bus interface. The PCF8574 has a low current
2
C-bus. This means that
Product specification
PCF8574
VERSION
SOT162-1
SOT266-1
SOT38-4

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