Datasheet

TCA4311A
www.ti.com SCPS226A –JANUARY 2011–REVISED JULY 2012
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Power Supply
V
CC
Positive supply voltage 2.7 5.5 V
I
CC
Supply current V
CC
= 5.5 V, V
SDAIN
= V
SCLIN
= 0 V 5.1 7 mA
Supply current in shutdown
I
SD
V
EN
= 0 V 0.1 μA
mode
Start-Up Circuitry
V
PRE
Precharge voltage SDA, SCL floating 0.8 1 1.2 V
t
IDLE
Bus idle time 50 95 150 μs
V
EN
EN threshold voltage 0.5 × V
CC
0.9 × V
CC
V
V
DIS
Disable threshold voltage EN Pin 0.1 × V
CC
0.5 × V
CC
V
I
EN
EN input current EN from 0 V to V
CC
±0.1 ±1 μA
t
EN
Enable time 95 μs
Disable time (EN to
t
DIS
30 ns
READY)
SDAIN to READY delay
t
STOP
1.2 μs
after STOP
SCLOUT/SDAOUT to
t
READY
0.8 μs
READY
READY OFF state leakage
I
OFF
±0.1 μA
current
V
OL
READY output low voltage I
PULLUP
= 3 mA 0.4 V
Rise-Time Accelerators
Transient boosted pull-up
I
PULLUPAC
Positive transition on SDA, SCL, V
CC
= 2.7 V, 1 2 mA
current
Input-Output Connection
V
OS
Input-output offset voltage 10 kΩ to V
CC
on SDA, SCL, V
CC
= 3.3 V,
(1)
0 100 175 mV
C
IN
Digital input capacitance 10 pF
Output low voltage, input =
V
OL
SDA, SCL pins, I
SINK
= 3 mA, 0 0.4 V
0 V
I
I
Input leakage current SDA, SCL pins = V
CC
= 5.5 V ±5 μA
(1) 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 pullup resistor and V
CC
voltage is shown in the Typical Performance Characteristics section.
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