PCA9518APW,512 NXP Semiconductors, PCA9518APW,512 Datasheet - Page 6

• Manufacturer Part Number: PCA9518APW,512
• Description: IC I2C HUB 5CH EXPANDBL 20-TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9518APW,512

• Applications: CMOS Bus Controller
• Interface: I²C
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 20-TSSOP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4245-5; 935284254512; PCA9518APW

NXP Semiconductors
7. Application design-in information
PCA9518A_3
Product data sheet
Standard-mode devices and multiple masters are possible. Please see application note
AN255, I
resistors.
A typical application is shown in
on a 3.3 V I
100 kHz unless slave 3, slave 4 and slave 5 are isolated from the bus. Then the master
bus and slave 1, slave 2 and slave 6 can run at 400 kHz.
Any segment of the hub can talk to any other segment of the hub. Bus masters and slaves
can be located on any segment with 400 pF load allowed on each segment.
The PCA9518A is 5 V tolerant, so it does not require any additional circuitry to translate
between the different bus voltages.
When one port of the PCA9518A is pulled LOW by a device on the I
hysteresis type input detects the falling edge and drives the EXPxxx1 line LOW, when the
EXPxxx1 voltage is less than 0.5V
PCA9518A which is typically 0.5 V.
2
C/SMBus Repeaters, Hubs and Expanders for additional information on sizing
2
C-bus while the slaves are connected to a 3.3 V or 5 V bus. All buses run at
Rev. 03 — 3 December 2008
Figure
DD
, the other ports are pulled down to the V
5. In this example, the system master is running
Expandable 5-channel I
PCA9518A
2
C-bus, a CMOS
© NXP B.V. 2008. All rights reserved.
2
OL
C-bus hub
of the
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