PCA9557D/DG,118 NXP Semiconductors, PCA9557D/DG,118 Datasheet - Page 3

• Manufacturer Part Number: PCA9557D/DG,118
• Description: IC I/O PORT I2C/SMBUS 16-SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCA9557D/DG,118

• Interface: I²C, SMBus
• Number Of I /o: 8
• Interrupt Output: No
• Frequency - Clock: 400kHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935285892118

NXP Semiconductors
PCA9557
Product data sheet
Fig 2.
write configuration
write polarity
shift register
shift register
shift register
write pulse
read pulse
data from
data from
data from
On power-up or reset, all registers return to default values.
Simplified schematic of IO0
pulse
pulse
configuration
register
D
CK
FF
Rev. 06 — 11 June 2008
Q
Q
output port
register
D
CK
FF
Q
8-bit I
input port
register
polarity inversion
register
D
CK
D
CK
2
FF
FF
C-bus and SMBus I/O port with reset
Q
Q
PCA9557
© NXP B.V. 2008. All rights reserved.
ESD protection
diode
output port
register data
IO0
V
input port
register data
polarity inversion
register data
SS
002aad277
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