PCA9557D/DG,118 NXP Semiconductors, PCA9557D/DG,118 Datasheet - Page 17

• 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 21. Definition of timing on the I
Fig 22. Definition of RESET timing
SDA
SCL
RESET
P
SCL
SDA
IOn
t
BUF
50 %
S
t
HD;STA
t
LOW
START
30 %
t
rec(rst)
2
t
t
r
HD;DAT
C-bus
Rev. 06 — 11 June 2008
t
HIGH
t
f
t
SU;DAT
8-bit I
t
w(rst)
Sr
50 %
2
C-bus and SMBus I/O port with reset
ACK or read cycle
t
SU;STA
t
HD;STA
t
t
rst
rst
50 %
50 %
t
I/O configured
as inputs
SP
t
SU;STO
PCA9557
002aad289
© NXP B.V. 2008. All rights reserved.
002aaa986
P
17 of 26