PCA9538BS Datasheet PDF - NXP Semiconductors
| Part Number | PCA9538BS | |
| Description | 8-bit I2C and SMBus low power I/O port with interrupt and reset | |
| Manufacturers | NXP Semiconductors | |
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There is a preview and PCA9538BS download ( pdf file ) link at the bottom of this page. Total 18 Pages | ||
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INTEGRATED CIRCUITS
PCA9538
8-bit I2C and SMBus low power I/O port
with interrupt and reset
Product data sheet
Supersedes data of 2004 Sep 30
2004 Oct 05
Philips
Semiconductors
|
| |
 
Philips Semiconductors
8-bit I2C and SMBus low power I/O port
with interrupt and reset
SIMPLIFIED SCHEMATIC OF I/O0 TO I/O7
DATA FROM
SHIFT REGISTER
DATA FROM
SHIFT REGISTER
WRITE
CONFIGURATION
PULSE
WRITE PULSE
CONFIGURATION
REGISTER
DQ
FF
CK Q
DQ
FF
CK Q
OUTPUT
PORT
REGISTER
READ PULSE
Q1
INPUT PORT
REGISTER
DQ
FF
CK Q
Q2
DATA FROM
SHIFT REGISTER
WRITE
POLARITY
PULSE
DQ
FF
CK Q
POLARITY
INVERSION
REGISTER
NOTE: At Power-on Reset, all registers return to default values.
Figure 4. Simplified schematic of I/O0 to I/O7
I/O port
When an I/O is configured as an input, FETs Q1 and Q2 are off,
creating a high-impedance input. The input voltage may be raised
above VDD to a maximum of 5.5 V.
If the I/O is configured as an output, then either Q1 or Q2 is enabled,
depending on the state of the output port register. Care should be
exercised if an external voltage is applied to an I/O configured as an
output because of the low impedance paths that exist between the
pin and either VDD or VSS.
Product data sheet
PCA9538
OUTPUT PORT
REGISTER DATA
VDD
ESD PROTECTION DIODE
I/O0 TO I/O7
ESD PROTECTION DIODE
VSS
INPUT PORT
REGISTER DATA
TO INT
POLARITY
REGISTER DATA
SU01784
2004 Oct 05
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PCA9538BS electronic component. |
| Information | Total 18 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ PCA9538BS.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| PCA9538BS | The function is 8-bit I2C and SMBus low power I/O port with interrupt and reset. NXP Semiconductors | |
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