Datasheet

LTC4304
3
4304fa
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.
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: Determined by design, not tested in production.
Note 7: I
CC
test performed with connection circuitry active.
Note 8: When fl oating, the ACC pin can tolerate ±5µA of leakage.
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
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
HYS
SDA, SCL, Logic Input Threshold Voltage (Note 6) 50 mV
Hysteresis
t
PLH
ENABLE Delay On-Off V
CC
= 3.3V 300 ns
READY Delay Off-On (Note 6) 10 ns
t
PHL
ENABLE Delay Off-On V
CC
= 3.3V ● 60 95 175 µs
READY Delay On-Off (Note 6) 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)
t
PDOFF
ACC Delay, On/Off (Note 6) 5 ns
V
IH
Input High Voltage Measured on ACC ● 0.9V
CC
V
V
IL
Input Low Voltage Measured on ACC ● 0.1V
CC
V
I
IN
ACC Input Current ACC Shorted to GND or V
CC
(Note 8) ● –100 100 µA
Bus Stuck Low Timeout
t
TIMEOUT
Bus Stuck Low Timer SDAOUT, SCLOUT = 0V ● 25 30 35 ms
V
OLFAULT
FAULT Output Low Voltage I
PULLUP
= 3mA ● 0.4 V
I
OFF_FAULT
V
CC
= 5.5V ● ±10 µA
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 = 0V 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
ELECTRICAL CHARACTERISTICS