PCA9557PW,112 NXP Semiconductors, PCA9557PW,112 Datasheet - Page 3

• Manufacturer Part Number: PCA9557PW,112
• Description: IC I/O EXPANDER I2C 8B 16TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9557PW,112

• Package / Case: 16-TSSOP
• 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
• Includes: POR
• Logic Family: PCA
• Operating Supply Voltage: 2.3 V to 5.5 V
• Power Dissipation: 200 mW
• Operating Temperature Range: - 40 C to + 85 C
• Maximum Clock Frequency: 400 KHz
• Mounting Style: SMD/SMT
• Output Current: 50 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-5028; 935270669112; PCA9557PW; PCA9557PW,112; PCA9557PW

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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