Philips Configuration
System Management ICs
PCA9515 PCA9516
I
2
C Bus Repeater
5-Channel I
2
C Hub
Description
The PCA9515 and PCA9516 allow extension of the I
2
C bus or SMBus on
systems requiring capacitance loads larger than the 400 pF max specified by
the I
2
C protocol. Using these parts, designers can extend the use of the I
2
C
bus in systems with more devices and/or longer bus lengths. The PCA9515
I
2
C Bus Repeater supports two I
2
C branches of 400 pF and the PCA9516
5-channel I
2
C Hub enables separation of the I
2
C bus into five 400 pF
segments for a total I
2
C bus or SMBus capacitance of 2000 pF.
Additionally, each individual repeater channel has an enable/disable feature
which is used to electrically isolate that segment of the I
2
C bus. Examples
where this could be useful include (i) isolating a 100 kHz segment from
the rest of a 400 kHz system to allow mixed operation at 100/400 kHz,
(ii) supporting the PCI management bus with up to or more than 8 PCI
slots, (iii) isolating the SMBus to hot plug PCI slots and (iv) allowing the
main SMBus to drive multiple system boards.
Another use of these devices is in systems using I
2
C bus or SMBus segments
at different voltages of 5.0 V and 3.3 V, thus extending the life of older 5.0 V
circuit blocks while using newer 3.3 V devices for improved system perfor-
mances. The PCA9515/16 are designed to work with clock frequencies up
to 400 kHz and are suitable for utilization in a multi-master I
2
C bus or
SMBus environment.
Application Note AN255 “Use of the PCA9515 and PCA9516 in a generic
multi-mater I
2
C environment” covers the use of these devices and explains
pull-up resistor sizing in detail. Only one hub or repeater is allowed per I
2
C
or SMBus system. The PCA9518 should be considered for systems larger
than 5 segments.
These bi-directional I
2
C drivers enable designers to isolate the I
2
C bus or
SMBus capacitance into smaller sections, accommodating more devices
or a longer bus length. Only 400 pF load is allowed on the bus and these
devices break the I
2
C bus or SMBus into multiple 400 pF segments.
Pin Configurations
PCA9515
N.C.
1
2
3
4
8
7
6
5
V
CC
SCL1
SDA1
EN
400 pF
SCL0
SDA0
GND
400 pF
PCA9515/16 Features
• Accommodate more I
2
C devices or a longer bus length, up to
400 pF per segment
• Bi-directional I
2
C drivers isolate the I
2
C bus capacitance of each segment.
• Powered-off high impedance I
2
C pins support hot insertion
• Open drain outputs and fail safe operation on loss of power
• I
2
C-bus and SMBus compatible
• Lock-up free operation
• Multi-master capable repeaters support bus arbitration and clock stretch-
ing with only one repeater delay between segments
• Individual channel enables allow segments to be individually isolated
• ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM
per JESD22-A115, and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds
100 mA.
• PCA9515 offered in 8-pin SO (D) and TSSOP (DP)
• PCA9516 offered in 16-pin SO narrow (D) and TSSOP (PW)
www.philipslogic.com/i2c
I
2
C Bus Repeater
400 pF
SCL0
SDA0
SCL1
1
2
16
15
V
CC
E4
SDA4
SCL4
E3
SDA3
SCL3
E2
PCA9516
3
4
5
6
7
8
14
13
12
11
10
9
400 pF
400 pF
SDA1
E1
SCL2
400 pF
SDA2
GND
400 pF
5-Channel I
2
C Hub
PCA9515/16 Operating Characteristics
• Operating voltage range is 3.0 V to 3.6 V
• 5.0 V tolerant I
2
C pins — pull-up resistors to either 3.3 V or 5.0 V
voltage levels are allowed on the individual segments
• Operating temperature range is -40 ºC to 85 ºC
• Accommodate 100 kHz and 400 kHz devices and multiple masters
Order Information
Package Container
Tube
SO
T&R
Tube
TSSOP
T&R
PCA9515
PCA9515D
PCA9515D-T
Not Offered
PCA9515DP-T
PCA9516
PCA9516D
PCA9516D-T
PCA9516PW
PCA9516PW-T
PCA9515
PCA9516
I
2
C Bus Repeater
5-Channel I
2
C Hub
PCA9515/16
PCA9516
3.0 - 3.6 V
V
CC
to 5.5 V
3.0 - 5.5 V
yes, 5
I
2
C
no
2000 pF
yes
400 kHz
120 nsec
hub/star
no
yes
yes, to 5.5 V
yes, 4
7 mA
TSSOP/SO16
P82B96
2.0 - 15.0 V
V
CC
to 15.0 V
2.0 - 15.0 V
yes, 2
10x I
2
C
yes
unlimited
yes
100 kHz
300 nsec
multi-drop bus
yes
yes
yes, to 15.0 V
no
1 mA
DIL/SO8
P82B715
4.5 - 12.0 V
Equal/less than V
CC
no level shifts
no
10x I
2
C
yes
3000 pF approx
no
100 kHz
400 nsec
multi-drop bus
no
no
no
no
16 mA
DIL/SO8
Repeater, Hub and Bus Extender Selection Summary
FEATURES
Data sheet supply voltage range V
CC
Nominal logic levels supported (range)
Allows I
2
C bus logic level shifting (range)
Allows interconnecting I
2
C buses, each 400 pF
On-chip bus sink current capability
Drives lower impedance " I
2
C like" buses
Max. (multimaster) bus capacitance supported
Allows inter-working of I
2
C and SMBus
Designed operating I
2
C clock speed
Typ. propagation delay (excluding contention)
(Multimaster) system configuration
Splits I
2
C to Tx/Rx allowing opto-isolation
Releases all I/Os if V
CC
supply fails
I/Os can be pulled above chip's V
CC
level
Logic "buffer enable" input(s)
Supply current (typical)
Packages
PCA9515
3.0 - 3.6 V
V
CC
to 5.5 V
3.0 - 5.5 V
yes, 2
I
2
C
no
800 pF
yes
400 kHz
100 nsec
repeater
no
yes
yes, to 5.5 V
yes
2 mA
TSSOP/SO8
Typical Applications
5.0 +/- 0.5 V
5.0 +/- 0.5 V
Bus isolation application using the PCA9515
Voltage translation application
using the PCA9516
5.0 V
3.3 V
SDA
SCL
400 pF
400 pF
PCA9515
5.0 V
5.0 V
3.3 V
400 pF
400 pF
400 pF
Any combination of 5.0 V and 5.0 V tolerant 3.3 V masters and slaves
of standard-mode, standard-mode and standard-mode compatible
fast-mode or fast-mode only parts.**
**All parts must be fast-mode to run at 400 kHz
PCA9516
400 pF
400 pF
Philips Semiconductors
Philips Semiconductors is a worldwide company with over 100 sales offices in more than 50 countries. For a complete up-to-date list of
our sales offices please e-mail sales.addresses@www.semiconductors.philips.com. A complete list will be sent to you automatically. You can
also visit our website
http://www.semiconductors.philips.com/sales/
or contact any of the following sales offices by phone or mail:
North America
Europe, Africa, Middle East and South America Asia Pacific Japan
Philips Semiconductors C.R.M Center Philips Semiconductors International Philips Semiconductors Asia Pacific
Philips Semiconductors
2800 Wells Branch Parkway
Fulfillment and Sales Support Center Market Response Management Center Philips Building 13-37
Mailstop P-411
P.O. Box 366
P.O. Box 68115
Kohnan 2-chome
Austin, Texas 78728
2700 AJ Zoetermeer
Kowloon East Post Office Minato-ku,
United States
The Netherlands
Hong Kong Tokyo 108-8507
Tel: +1 800 234 7381
Fax: +31 79 3685126
Fax: +1 800 943 0087
E-mail: P411webinq.smi@harte-hanks.com
Fax: +852 2756 8271
Fax: +81 3 3740 5057
Tel: +81 3 3740 5130
© Koninklijke Philips Electronics N.V. 2001
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does
not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under patent – or other industrial or intellectual property rights.
Printed in the USA
Date of release: December 2001
Print code: 301673/8k/FP/2pp/1201
Document ordering number: 9397 750 08205
MCU
京公网安备 11010802033920号
EEWORLD
