Propagation Delay Time
:
Power Dissipation
:
Operating Temperature Range
: - 40 C to + 85 C
Number of Lines (Input / Output)
: 8 / 8
Package / Case
: TSSOP-16
Operating Supply Voltage
: 2.3 V to 5.5 V
Packaging
: Tube
Logic Family
: PCA9557
Pinout
DescriptionThe PCA9557PW is a type of silicon CMOS circuit which offers parallel input/output expansion for SMBus and I2C app lications. The PCA9557PW contains an 8-bit input port register, 8-bit output port register, and an I2C/SMBus interfa ce. It has low current consumption and a high impedance open drain output pin, I/O0.The system master enables the PCA9557PW's I/O as either input or output by writing to the configuration register.The system master can also invert the PCA9557PW inputs by writing to the active HIGH polarity inversion register
Features of the PCA9557PW are:(1)lower voltage, higher performance migration path for the PCA9556;(2)8 general purpose input/output expander/collector;(3)input/output configuration register;(4)active HIGH polarity inversion reg ister;(5)I2C and SMBus interface logic;(6)3 address pins allowing up to 8 devices on the I2C/SMBus;(7)operating po wer supply voltage range of 2.3 V to 5.5 V;(8) ESD protection exceeds 2000 V HBM per JESD22-A114,200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101;(9)Power-up with all channels configured as inputs.
The absolute maximum ratings of the PCA9557PW can be summarized as:(1):DC supply voltage is0.5V min and +6 V max;(2): DC input voltage is VSS-0.5V min and 5.5 V max;(3):DC input current is±20 mA max;(4):maximum allowed input current through protectiondiode (I/O1 I/O7) is ±400 mA max when VI is VDD or greater than VDD, VI is VSS or less than VSS; (5):DC voltage on an I/O as an input other than I/O0 is VSS-0.5 V min and 5.5 V max;(6):DC volta ge on I/O0 as an input is VSS-0.5V min and 5.5 V max;(7):DC input current on I/O is +400 mA max;(8):DC output cu rrent on an I/O is ± 50 mA max.etc.
Parameters: | Technical/Catalog Information | PCA9557PW |
| Vendor | Texas Instruments |
| Category | Integrated Circuits (ICs) |
| Interface | I²C, SMBus |
| Number of I /O | 8 |
| Frequency - Clock | 400kHz |
| Voltage - Supply | 2.3 V ~ 5.5 V |
| Package / Case | 16-TSSOP |
| Packaging | Tube |
| Operating Temperature | -40°C ~ 85°C |
| Interrupt Output | No |
| Current - Drive | 24mA |
| Includes | POR |
| Drawing Number | 296; 4040064; PW; 8, 14, 16, 20, 24, 28 |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | PCA9557PW
PCA9557PW
PCA9557PWTI ND
PCA9557PWTIND
PCA9557PWTI
|
PCA9557PW Data Sheet
