PCA9557PW,118 NXP Semiconductors, PCA9557PW,118 Datasheet - Page 4

• Manufacturer Part Number: PCA9557PW,118
• Description: IC I/O EXPANDER I2C 8B 16TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9557PW,118

• 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: PCA9557
• Number Of Lines (input / Output): 8.0 / 8.0
• Operating Supply Voltage: 2.3 V to 5.5 V
• Power Dissipation: 200 mW
• Operating Temperature Range: - 40 C to + 85 C
• Input Voltage: 5 V
• Logic Type: I2C, SMBus
• Maximum Clock Frequency: 400 KHz
• Mounting Style: SMD/SMT
• Number Of Input Lines: 8.0
• Number Of Output Lines: 8.0
• Output Current: 50 mA
• Output Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-1061-2; 935270669118; PCA9557PW-T

NXP Semiconductors
PCA9557
Product data sheet
Fig 3.
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 IO1 to IO7
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
ESD protection
diode
output port
register data
V
IO1 to IO7
V
input port
register data
polarity inversion
register data
DD
SS
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