PCA9510 Philips Semiconductors (Acquired by NXP), PCA9510 Datasheet - Page 3

• Manufacturer Part Number: PCA9510
• Description: Hot Swappable I2C And Smbus Bus Bufferhot Swappable i C And Smbus Buffers That Allows I/o Card Insertion Into a Live Backplane Without Corrupting The Data And Clock Buses. Control Circuitry Prevents The Backplane From Being Connected to The Card Unti
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
PIN CONFIGURATION
FEATURE SELECTION CHART
2003 Dec 18
Idle detect
High impedance SDA, SCL pins for V
Rise time accelerator circuitry on all SDA and SCL lines
Rise time accelerator circuitry hardware disable pin for lightly loaded
systems
Rise time accelerator threshold 0.8 V vs 0.6 V improves noise margin
Ready open drain output
Two V
margins
1 V precharge on all SDA and SCL lines
92 µA current source on SCLIN and SDAIN for PICMG applications
Hot swappable I
SMBus bus buffer
CC
pins to support 5 V to 3.3 V level translation with improved noise
SCLOUT
ENABLE
SCLIN
Figure 1. Pin configuration.
GND
1
2
3
4
TOP VIEW
2
C and
FEATURES
SW01045
CC
8
7
6
5
= 0 V
V
SDAOUT
SDAIN
READY
CC
3
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
PCA9510
IN only
Yes
Yes
Yes
—
—
—
—
—
SYMBOL
ENABLE
SCLOUT
SCLIN
GND
READY
SDAIN
SDAOUT
V
CC
PCA9511
Yes
Yes
Yes
Yes
Yes
—
—
—
—
DESCRIPTION
Chip enable pin. Grounding this pin puts the
part in a low current (<1 µA) mode. It also
disables the rise time accelerators, isolates
SDAIN from SDAOUT and isolates SCLIN
from SCLOUT.
Serial clock output to and from the SCL bus
on the card.
Serial clock input to and from the SCL bus
on the backplane.
Ground. Connect this pin to a ground plane
for best results.
This is an open-drain output which pulls
LOW when SDAIN and SCLIN are
disconnected from SDAOUT and SCLOUT,
and turns off when the two sides are
connected.
Serial data input to and from the SDA bus on
the backplane.
Serial data output to and from the SDA bus
on the card.
Power supply.
PCA9510; PCA9511
PCA9512
Yes
Yes
Yes
Yes
Yes
Yes
—
—
—
PCA9513
Yes
Yes
Yes
Yes
Yes
Yes
—
—
—
Product data
PCA9514
Yes
Yes
Yes
Yes
Yes
—
—
—
—