3
LTC1380/LTC1393
ELECTRICAL CHARACTERISTICS
(Notes 2, 4)
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All current into device pins is positive; all current out of device
pins is negative. All voltages are referenced to ground unless otherwise
specified. All typicals are given for T
A
= 25°C, V
CC
= 5V (for both LTC1380
and LTC1393) and V
EE
= –5V (LTC1380).
Note 3: These typical parameters are based on bench measurements and
are not production tested.
Note 4: Both SCL and SDA assume an external 15k pull-up resistor to a
typical SMBus host power supply V
DD
of 5V.
Note 5: Typical curves with V
EE
= –5V apply to the LTC1380. Curves with
V
EE
= 0V apply to both the LTC1380 and the LTC1393.
Note 6: These parameters are guaranteed by design and are not tested in
production.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
SCL, SDA Input High Voltage ● 1.4 V
V
IL
SCL, SDA Input Low Voltage ● 0.6 V
V
OL
SDA Output Low Voltage I
SDA
= 3mA ● 0.4 V
V
AH
Address Input High Voltage V
CC
= 5V ● 2V
V
AL
Address Input Low Voltage V
CC
= 5V ● 0.8 V
I
IN
SCL, SDA, Address Input Current 0V ≤ V
IN
≤ V
CC
±1 µA
I
CC
Positive Supply Current V
CC
= 5V, All Digital Inputs at 5V ● 10 20 µA
I
EE
Negative Supply Current LTC1380: V
CC
= 5V, V
EE
= –5V, All Digital Inputs at 5V ● –0.1 –5 µA
C
S
Input Off Capacitance (Note 3) 3 pF
C
D
Output Off Capacitance (Note 3) LTC1380 26 pF
LTC1393 18 pF
t
ON
Switch Turn-On Time from Figure 1 LTC1380: V
CC
= 5V, V
EE
= –5V ● 850 1500 ns
Stop Condition LTC1393: V
CC
= 5V ● 850 1500 ns
LTC1380/LTC1393: V
CC
= 2.7V, V
EE
= 0V ● 1130 2000 ns
t
OFF
Switch Turn-Off Time from Figure 1 LTC1380: V
CC
= 5V, V
EE
= –5V ● 640 1200 ns
Stop Condition LTC1393: V
CC
= 5V ● 650 1200 ns
LTC1380/LTC1393: V
CC
= 2.7V, V
EE
= 0V ● 670 1200 ns
t
OPEN
Break-Before-Make Interval t
ON
– t
OFF
● 75 210 ns
OIRR Off-Channel Isolation Figure 2, V
S
= 200mV
P-P
, R
L
= 1k, f = 100kHz (Note 3) –65 dB
Q
INJ
Charge Injection Figure 3, C
L
= 1000pF (Note 3) ● ±1 ±20 pC
SMBus Timing (Note 6)
f
SMB
SMBus Operating Frequency ● 100 kHz
t
BUF
Bus Free Time Between Stop/Start ● 4.7 µs
t
HD:STA
Hold Time After (Repeated) Start ● 4.0 µs
t
SU:STA
Repeated Start Setup Time ● 4.7 µs
t
SU:STO
Stop Condition Setup Time ● 4.0 µs
t
HD:DAT
Data Hold Time ● 300 ns
t
SU:DAT
Data Setup Time ● 250 ns
t
LOW
Clock Low Period ● 4.7 µs
t
HIGH
Clock High Period ● 4.0 µs
t
f
SCL/SDA Fall Time Time Interval Between 0.9V
DD
and (V
ILMAX
– 0.15) ● 300 ns
t
r
SCL/SDA Rise Time Time Interval Between (V
ILMAX
– 0.15) ● 1000 ns
and (V
IHMIN
+ 0.15)
