Datasheet

LTC4303
3
4303fb
ELECTRICAL CHARACTERISTICS
The denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 2.7V to 5.5V, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise specifi ed.
Note 3: Pulsed less than 5µs.
Note 4: The connection circuitry always regulates the output to a higher
voltage than its input. The magnitude of this offset voltage as a function of
the pull-up resistor and V
CC
voltage is shown in the Typical Performance
Characteristics section.
Note 5: I
PULLUPAC
varies with temperature and V
CC
voltage, as shown in
the Typical Performance Characteristics section.
Note 6: Guaranteed by design, not tested in production.
Note 7: I
CC
test performed with connection circuitry active.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
HYS
SDA, SCL, Logic Input Threshold Voltage (Note 6) 50 mV
Hysteresis
t
PHL_ENABLE
Delay ENABLE High-Low to Disconnect V
CC
= 3.3V 300 ns
t
PHL_READY
Delay READY High-Low after Disconnect 10 ns
t
PLH_ENABLE
Delay ENABLE Low-High to Connect V
CC
= 3.3V 60 95 175 µs
t
PLH_READY
Delay READY Low-High after Connect 10 ns
I
OFF_READY
Ready Off Leakage Current ±10 µA
Rise-Time Accelerators
I
PULLUPAC
Transient Boosted Pull-Up Current Positive Transition on SDA, SCL, V
CC
= 2.7V, 2 3.5 5.5 mA
Slew Rate = 0.8V/µs (Note 5)
Bus Stuck Low Timeout
t
TIMEOUT
Bus Stuck Low Timer SDAOUT, SCLOUT = 0V 25 30 35 ms
Input-Output Connection
V
OS
Input-Output Offset Voltage 10k to V
CC
on SDA, SCL, 40 80 120 mV
2.7k to V
CC
on SDA, SCL 50 100 150 mV
V
CC
= 3.3V, V
SDA/SCL
= 0.2V (Note 4)
C
IN
Digital Input Capacitance (Note 6) 10 pF
SDAIN, SDAOUT, SCLIN, SCLOUT
V
IL, MAX
Input Logic Low Voltage 0.4 V
I
LEAK
Input Leakage Current SDA, SCL, V
CC
= 5.5V ±5 µA
V
OL
Output Low Voltage, Input = 0 SDA, SCL Pins, I
SINK
= 4mA, V
CC
= 2.7V 0 0.19 0.3 V
Timing Characteristics
f
I2C, MAX
I
2
C Maximum Operating Frequency (Note 6) 400 600 kHz
t
BUF
Bus Free Time Between Stop and Start (Note 6) 1.3 µs
Condition
t
HD, STA
Hold Time After (Repeated) (Note 6) 100 ns
Start Condition
t
SU, STA
Repeated Start Condition Set-Up Time (Note 6) 0 ns
t
SU, STO
Stop Condition Set-Up Time (Note 6) 0 ns
t
HD, DATI
Data Hold Time Input (Note 6) 0 ns
t
SU, DAT
Data Set-Up Time (Note 6) 100 ns