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PDF PCA9557D Data sheet ( Hoja de datos )
| Número de pieza | PCA9557D | |
| Descripción | 8-bit I2C and SMBus I/0 port with reset | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
PCA9557
8-bit I2C and SMBus I/0 port with reset
Product data
File under Integrated Circuits — ICL03
2001 Dec 12
Philips
Semiconductors
1 page  
Philips Semiconductors
8-bit I2C and SMBus I/0 port with reset
Product data
PCA9557
SIMPLIFIED SCHEMATIC OF I/O1 TO I/O7
DATA FROM
SHIFT REGISTER
DATA FROM
SHIFT REGISTER
WRITE
CONFIGURATION
PULSE
WRITE PULSE
CONFIGURATION
REGISTER
DQ
FF
CK Q
DQ
FF
CK Q
OUTPUT
PORT
REGISTER
READ PULSE
INPUT PORT
REGISTER
DQ
FF
CK Q
DATA FROM
SHIFT REGISTER
WRITE POLARITY
PULSE
DQ
FF
CK Q
POLARITY
INVERSION
REGISTER
NOTE: On power–up or reset, all registers return to default values.
Figure 5. Simplified schematic of I/O1 to I/O7
OUTPUT PORT
REGISTER DATA
VDD
ESD PROTECTION DIODE
I/O1 TO I/O7
ESD PROTECTION DIODE
VSS
INPUT PORT
REGISTER DATA
POLARITY
REGISTER DATA
SW00796
2001 Dec 12
5
5 Page 
Philips Semiconductors
8-bit I2C and SMBus I/0 port with reset
Product data
PCA9557
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
VDD
VI
II
IIHL(max)
DC supply voltage
DC input voltage
DC input current
Maximum allowed input current through protection
diode (I/O1 – I/O7)
VI ≥ VDD or VI ≤ VSS
VI/O
VI/O0
DC voltage on an I/O as an input other than I/O0
DC voltage on I/O0 as an input
II/O0 DC input current on I/O0
II/O
IDD
ISS
Ptot
Tstg
Tamb
DC output current on an I/O
DC supply current
DC supply current
Total power dissipation
Storage temperature range
Operating ambient temperature
MIN
–0.5
VSS – 0.5
—
—
VSS – 0.5
VSS – 0.5
—
—
—
—
—
—
–65
–40
MAX
+6
5.5
± 20
±400
5.5
5.5
+400
–20
± 50
85
100
200
+150
+85
UNIT
V
V
mA
µA
V
V
µA
mA
mA
mA
mA
mW
°C
°C
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take
precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC24 under ”Handling MOS devices”.
2001 Dec 12
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet PCA9557D.PDF ] | |
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