Philips Semiconductors

Product data sheet

PCA9510; PCA9511

2004 Oct 05

3

PIN CONFIGURATION

1

2

3

4

ENABLE

GND

SCLIN

SDAOUT

SDAIN

READY

5

6

7

8

SCLOUT

SW01045

TOP VIEW

Figure 1. Pin configuration.

PIN DESCRIPTION

PIN

SYMBOL

DESCRIPTION

1

ENABLE

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.

2

SCLOUT

Serial clock output to and from the SCL bus

on the card.

3

SCLIN

Serial clock input to and from the SCL bus

on the backplane.

4

GND

Ground. Connect this pin to a ground plane

for best results.

5

READY

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.

6

SDAIN

Serial data input to and from the SDA bus on

the backplane.

7

SDAOUT

Serial data output to and from the SDA bus

on the card.

8

Power supply.

FEATURE SELECTION CHART

FEATURES

PCA9510

PCA9511

PCA9512

PCA9513

PCA9514

Idle detect

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Rise time accelerator circuitry on all SDA and SCL lines

—

Yes

Yes

Yes

Yes

Rise time accelerator circuitry hardware disable pin for lightly loaded

systems

—

—

Yes

—

—

Rise time accelerator threshold 0.8 V vs 0.6 V improves noise margin

—

—

—

Yes

Yes

Ready open drain output

Yes

Yes

—

Yes

Yes

margins

—

—

Yes

—

—

1 V precharge on all SDA and SCL lines

IN only

Yes

Yes

—

—

92

µA current source on SCLIN and SDAIN for PICMG applications

—

—

—

Yes

—