PCA9511ADP datasheet(13/23 Pages) PHILIPS

13 / 23 page

9397 750 13269

Product data sheet

Rev. 01 — 15 August 2005

13 of 23

Philips Semiconductors

PCA9511A

Hot swappable I2C-bus and SMBus bus buffer

[1]

This speciﬁcation applies over the full operating temperature range.

[2]

The enable time can slow considerably for some parts when temperature is <

−20 °C.

[3]

Delays that can occur after ENABLE and/or idle times have passed.

[4]

Guaranteed by design, not production tested.

[5]

Itrt(pu) varies with temperature and VCC voltage, as shown in Section 11.1 “Typical performance characteristics”.

[6]

The connection circuitry always regulates its output to a higher voltage than its input. The magnitude of this offset voltage as a function

of the pull-up resistor and VCC voltage is shown in Section 11.1 “Typical performance characteristics”.

[7]

Cb = total capacitance of one bus line in pF.

[8]

Force VSDAIN = VSCLIN = 0.1 V, tie SDAOUT and SCLOUT through 10 kΩ resistor to VCC and measure the SDAOUT and SCLOUT

output.

Input-output connection

Voffset

offset voltage

10 k

Ω to V

CC on SDA, SCL;

VCC = 3.3 V

[1] [6]

[8]

110

175

tPLH

LOW-to-HIGH

propagation delay (SCL

to SCL and SDA to SDA)

10 k

Ω to V

CC;

CL = 100 pF each side

-0

tPHL

HIGH-to-LOW

propagation delay (SCL

to SCL and SDA to SDA)

10 k

Ω to V

CC;

CL = 100 pF each side

-70

Ci(SCL/SDA) SCL and SDA input

capacitance

[4] -

57pF

VOL

LOW-state output

voltage

VI = 0 V; SDAn, SCLn pins;

Isink = 3 mA; VCC = 2.7 V

[1] 0

0.4

ILI

input leakage current

SDAn, SCLn pins; VCC = 5.5 V

−1-

µA

System characteristics

fSCL

SCL clock frequency

[4] 0

400

kHz

tBUF

bus free time between

STOP and START

condition

[4] 1.3

µs

tHD;STA

START condition hold

time

[4] 0.6

µs

tSU;STA

START condition set-up

time

[4] 0.6

µs

tSU;STO

STOP condition set-up

time

[4] 0.6

µs

tHD;DAT

data hold time

[4] 300

tSU;DAT

data setup time

[4] 100

tLOW

SCL LOW time

[4] 1.3

µs

tHIGH

SCL HIGH time

[4] 0.6

µs

fall time SDA and SCL

[4] [7] 20 + 0.1

× Cb -

300

rise time SDA and SCL

[4] [7] 20 + 0.1

× Cb -

300

Table 5:

Characteristics …continued

VCC = 2.7 V to 5.5 V; Tamb = −40 °C to +85 V; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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