LT1180A Просмотр технического описания (PDF) - Linear Technology
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LT1180A Datasheet PDF : 12 Pages
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LT1180A/LT1181A
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the operating temperature
range (0°C ≤ TA ≤ 70°C for commercial grade, and – 40°C ≤ TA ≤ 85°C for industrial grade. (Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
ON/OFF Pin Current
Oscillator Frequency
0V ≤ VON/OFF ≤ 5V
q
– 15
80
µA
130
kHz
Driver
Output Voltage Swing
Load = 3k to GND
Positive
5.0
7.5
V
Negative
q
– 6.3 – 5.0
V
Logic Input Voltage Level
Input High Level (VOUT = Low)
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Date Rate (Note 7)
Slew Rate
RL = 3k, CL = 2500pF
Propagation Delay
Receiver
Input Low Level (VOUT = High)
0.8V ≤ VIN ≤ 2.0V
VOUT = 0V
Shutdown VOUT = ±30V (Note 4)
RL = 3k, CL = 2500pF
RL = 3k, CL = 1000pF
RL = 3k, CL = 51pF
Output Transition tHL High-to-Low (Note 5)
Output Transition tLH Low-to-High
q
1.4
0.8
V
q
2.0
1.4
V
q
5
20
µA
±9
17
mA
q
10
100
µA
120
kBaud
250
kBaud
15
30
V/µs
4
7
V/µs
0.6
1.3
µs
0.5
1.3
µs
Input Voltage Thresholds
Input Low Threshold (VOUT = High)
C Grade
q
0.8
1.3
V
Input High Threshold (VOUT = Low)
C Grade
q
1.7
2.4
V
Input LowI,
M Grade
q
0.2
1.3
V
Input HighI,
M Grade
q
1.7
3.0
V
Hysteresis
q
0.1
0.4
1.0
V
Input Resistance
Output Leakage Current
Output Voltage
Output Short-Circuit Current
Propagation Delay
VIN = ±10V
Shutdown (Note 4) 0 ≤ VOUT ≤ VCC
Output Low, IOUT = – 1.6mA
Output High, IOUT = 160µA (VCC = 5V)
Sinking Current, VOUT = VCC
Sourcing Current, VOUT = 0V
Output Transition tHL High-to-Low (Note 6)
Output Transition tLH Low-to-High
3
5
7
kΩ
q
1
10
µA
q
0.2
0.4
V
q
3.5
4.2
V
–20 – 10
mA
10
20
mA
250 600
ns
350 600
ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Testing done at VCC = 5V and VON/OFF = 3V, unless otherwise
specified.
Note 3: Supply current is measured as the average over several charge
pump cycles. C + = C – = C1 = C2 = 0.1µF. All outputs are open, with all
driver inputs tied high.
Note 4: Supply current measurements in SHUTDOWN are performed with
VON/OFF ≤ 0.1V.
Note 5: For driver delay measurements, RL = 3k and CL = 51pF. Trigger
points are set between the driver’s input logic threshold and the output
transition to the zero crossing (tHL = 1.4V to 0V and tLH = 1.4V to 0V).
Note 6: For receiver delay measurements, CL = 51pF. Trigger points are
set between the receiver’s input logic threshold and the output transition
to standard TTL/CMOS logic threshold (tHL = 1.3V to 2.4V and tLH = 1.7V
to 0.8V).
Note 7: Data rate operation guaranteed by slew rate, short-circuit current
and propagation delay tests.
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