PCA9554DB

Cross Number:

Item Description: Remote I2C and SMBus I/O Expander 16-Pin SSOP T/R - Rail/T
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

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PCA9554/PCA9554A
8-bit I
2
C and SMBus I/O port with interrupt
Product data sheet
Supersedes data of 2002 Jul 26
2004 Sep 30
INTEGRATED CIRCUITS
Philips Semiconductors Product data sheet
PCA9554/PCA9554A8-bit I
2
C and SMBus I/O port with interrupt
2
2004 Sep 30
FEATURES
Operating power supply voltage range of 2.3 to 5.5 V
5 V tolerant I/Os
Polarity inversion register
Active-LOW interrupt output
Low stand-by current
Noise filter on SCL/SDA inputs
No glitch on power-up
Internal power-on reset
8 I/O pins which default to 8 inputs
0 to 400 kHz clock frequency
ESD protection exceeds 2000 V HBM per JESD22-A114,
200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
Six packages offered: DIP16, SO16, SSOP16, SSOP20,
TSSOP16, and HVQFN16
DESCRIPTION
The PCA9554 and PCA9554A are 16-pin CMOS devices that
provide 8 bits of General Purpose parallel Input/Output (GPIO)
expansion for I
2
C/SMBus applications and were developed to
enhance the Philips family of I@C I/O expanders. The improvements
include higher drive capability, 5V I/O tolerance, lower supply
current, individual I/O configuration, 400 kHz clock frequency, and
smaller packaging. I/O expanders provide a simple solution when
additional I/O is needed for ACPI power switches, sensors,
pushbuttons, LEDs, fans, etc.
The PCA9554/54A consist of an 8-bit Configuration register (Input or
Output selection); 8-bit Input register, 8-bit Output register and an
8-bit Polarity inversion register (Active-HIGH or Active-LOW
operation). 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 register.
The polarity of the read register can be inverted with the Polarity
Inversion Register. All registers can be read by the system master.
Although pin to pin and I
2
C address compatible with the PCF8574
series, software changes are required due to the enhancements and
are discussed in
Application Note AN469
.
The PCA9554/54A open-drain interrupt 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. The power-on reset sets the registers to their default
values and initializes the device state machine.
Three hardware pins (A0, A1, A2) vary the fixed I
2
C address and
allow up to eight devices to share the same I
2
C/SMBus. The
PCA9554A is identical to the PCA9554 except that the fixed I
2
C
address is different allowing up to sixteen of these devices (eight of
each) on the same I
2
C/SMBus.
ORDERING INFORMATION
PACKAGES
TEMPERATURE
RANGE
ORDER CODE TOPSIDE MARK DRAWING NUMBER
16-Pin Plastic DIP –40 °C to +85 °C PCA9554N PCA9554N SOT38-1
16-Pin Plastic SO (wide) –40 °C to +85 °C PCA9554D PCA9554D SOT162-1
16-Pin Plastic SSOP –40 °C to +85 °C PCA9554DB 9554DB SOT338-1
20-Pin Plastic SSOP –40 °C to +85 °C PCA9554TS PCA9554 SOT266-1
16-Pin Plastic TSSOP –40 °C to +85 °C PCA9554PW 9554DH SOT403-1
16-Pin Plastic HVQFN –40 °C to +85 °C PCA9554BS 9554 SOT629-1
16-Pin Plastic DIP –40 °C to +85 °C PCA9554AN PCA9554AN SOT38-1
16-Pin Plastic SO (wide) –40 °C to +85 °C PCA9554AD PCA9554AD SOT162-1
16-Pin Plastic SSOP –40 °C to +85 °C PCA9554ADB 9554A SOT338-1
20-Pin Plastic SSOP –40 °C to +85 °C PCA9554ATS PA9554A SOT266-1
16-Pin Plastic TSSOP –40 °C to +85 °C PCA9554APW 9554ADH SOT403-1
16-Pin Plastic HVQFN –40 °C to +85 °C PCA9554ABS 554A SOT629-1
Standard packing quantities and other packaging data are available at www.philipslogic.com/packaging.
I
2
C is a trademark of Philips Semiconductors Corporation.
SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I
2
C patent.
Philips Semiconductors Product data sheet
PCA9554/PCA9554A8-bit I
2
C and SMBus I/O port with interrupt
2004 Sep 30
3
PIN CONFIGURATION — 16-pin DIP, SO, SSOP,
TSSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
su01410
A0
A1
A2
I/O0
I/O1
I/O2
I/O3
V
SS
V
DD
SDA
SCL
INT
I/O7
I/O6
I/O5
I/O4
Figure 1. Pin configuration — 16-pin DIP, SO, SSOP, TSSOP
PIN CONFIGURATION — 20-pin SSOP
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20INT
SCL
n.c.
SDA
V
DD
A0
A1
n.c.
A2
I/O0
I/O7
I/O6
n.c.
I/O5
I/O4
V
SS
I/O3
I/O2
n.c.
I/O110
SW02269
Figure 1. Pin configuration — 20-pin SSOP
PIN CONFIGURATION — HVQFN
12
11
10
9
5
6
7
8
1
2
3
4
16
15
14
13
su01670
TOP VIEW
A2
I/O0
I/O1
I/O2
I/O3 I/O4V
SS
I/O5
INT
I/O6
I/O7
SDAV
DD
A0A1
SCL
Figure 2. Pin Configuration — HVQFN
PIN DESCRIPTION
DIP16, SO16, SSOP16,
TSSOP16
PIN NUMBER
HVQFN16
PIN NUMBER
SSOP20
PIN NUMBER
SYMBOL FUNCTION
1 15 6 A0 Address input 0
2 16 7 A1 Address input 1
3 1 9 A2 Address input 2
4–7 2–5 10–12, 14 I/O0 to I/O3 I/O0 to I/O3
8 6 15 V
SS
Supply ground
9 7–10 16, 17, 19, 20 I/O4 to I/O7 I/O4 to I/O7
13 11 1 INT Interrupt output (open drain)
14 12 2 SCL Serial clock line
15 13 4 SDA Serial data line
16 14 5 V
DD
Supply voltage
3, 8, 13, 18 n.c. not connected
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