Philips Semiconductors
Product data
PCA9516
5-channel I
2
C hub
2
2002 May 13
853–2234 28185
DESCRIPTION
The PCA9516 is a BiCMOS integrated circuit intended for
application in I
2
C and SMBus systems.
While retaining all the operating modes and features of the I
2
C
system, it permits extension of the I
2
C bus by buffering both the data
(SDA) and the clock (SCL) lines, thus enabling five buses of 400 pF.
The I
2
C bus capacitance limit of 400 pF restricts the number of
devices and bus length. Using the PCA9516 enables the system
designer to divide the bus into five segments off of a hub where any
segment to segment transition sees only one repeater delay.
It can also be used to run different buses at 5 V and 3.3 V or
400 kHz and 100 kHz buses where the 100 kHz bus is isolated
when 400 kHz operation of the other bus is required.
FEATURES
5 channel, bi-directional buffer
I
2
C-bus and SMBus compatible
Active high individual repeater enable input
Open-drain input/outputs
Lock-up free operation
Supports arbitration and clock stretching across the repeater
Accommodates standard mode and fast mode I
2
C devices and
multiple masters
Powered-off high impedance I
2
C pins
Operating supply voltage range of 3.0 V to 3.6 V
5 V tolerant I
2
C and enable pins
0 to 400 kHz clock frequency
1
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.
Package offerings: SO and TSSOP
PIN CONFIGURATION
1
2
3
4
SCL0
SDA1
SCL1
EN4
SDA4
SCL4
13
14
15
16
V
CC
SDA0
SU01395
5
6
7
8
EN1
GND
SDA2
SDA3
SCL3
EN2
9
10
11
12
EN3
SCL2
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
SYMBOL
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SCL0
SDA0
SCL1
SDA1
EN1
SCL2
SDA2
GND
EN2
SCL3
SDA3
EN3
SCL4
SDA4
EN4
V
CC
Serial clock bus 0
Serial data bus 0
Serial clock bus 1
Serial data bus 1
Active High Bus 1 enable Input
Serial clock bus 2
Serial data bus 2
Supply ground
Active High Bus 2 enable Input
Serial clock bus 3
Serial data bus 3
Active High Bus 3 enable Input
Serial clock bus 4
Serial data bus 4
Active High Bus 4 enable Input
Supply power
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
–40 to +85
°
C
–40 to +85
°
C
ORDER CODE
DRAWING NUMBER
16-pin plastic SO (narrow)
PCA9516D
SOT109-1
16-pin plastic TSSOP
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
PCA9516PW
SOT403-1
1.
The maximum system operating frequency may be less than 400 KHz because of the delays added by the repeater.