LT685CH View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT685CH' PDF : 4 Pages View PDF
LT685
U
SWITCHI G CHARACTERISTICS (VIN = 100mV step, 5mV overdrive)
SYMBOL PARAMETER
CONDITIONS
LT685C
MIN TYP MAX
tPD
tPD(E)
tS
tH
Propagation Delay
(Note 4)
Latch Enable to
Output Delay
(Note 3)
Minimum Set-Up Time
(Note 3)
Minimum Hold Time
(Note 3)
TA = 25°C
TA = TMAX
TA = TMIN
TA = 25°C
TA = TMAX
TA = TMIN
TMIN ≤ TA ≤ 25°C
TA = TMAX
TMIN ≤ TA ≤ TMAX
4.5
5.5 6.5
5.0
9.5
4.0
6.5
4.5
5.5 6.5
5.0
9.5
4.0
6.5
3.0
4.0
1.0
tPW(E)
Minimum Latch Enable
TMIN ≤ TA ≤ 25°C
3.0
Pulse Width (Note 3)
TA = TMAX
4.0
LT685M
MIN TYP
MAX
4.5
5.5
6.5
5.5
12
3.5
6.5
4.5
5.5
6.5
5.5
12
3.5
6.5
3.0
6.0
1.0
3.0
5.0
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: For the metal can package, derate at 6.8mW/°C for operation at
ambient temperatures above 100°C; for the hermetic dual-in-line package,
derate at 9mW/°C for operation at ambient temperatures above 105°C.
Note 3: Guaranteed by design, but not tested.
Note 4: Sample tested at 25°C only.
Definitions:
tPD: The propagation delay measured from the time the input signal
crosses the input offset voltage to the 50% point of the output transition.
tPD(E): The propagation delay measured from the 50% point of the latch
enable signal positive transition to the 50% point of the output transition.
tS: The minimum time before the negative transition of the latch enable
signal that an input signal change must be present in order to be acquired
and held at the outputs.
tH: The minimum time after the negative transition of the latch enable
signal that the input signal must remain unchanged in order to be acquired
and held at the outputs.
tPW (E): The minimum time that the latch enable signal must be HIGH in
order to acquire and hold an input signal change.
685fa
4
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