LT1537 Ver la hoja de datos (PDF) - Linear Technology
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LT1537 Datasheet PDF : 8 Pages
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LT1537
ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
Any Driver
Output Leakage Current
Data Rate
Slew Rate
Propagation Delay
Any Receiver
Input Voltage Thresholds
Hysteresis
Input Resistance
Output Voltage
Output Leakage Current
Output Short-Circuit Current
Propagation Delay
CONDITIONS
Shutdown VOUT = ±15V (Note 4)
RL = 3k, CL = 2500pF
RL = 3k, CL = 1000pF
RL = 3k, CL = 51pF
RL = 3k, CL = 2500pF
Output Transition tHL HIGH to LOW (Note 5)
Output Transition tLH LOW to HIGH
Input LOW Threshold (VOUT = HIGH)
Input HIGH Threshold (VOUT = LOW)
VIN = ±10V
Output LOW, IOUT = – 1.6mA
Output HIGH, IOUT = 160µA (VCC = 5V)
Shutdown (Note 4) 0 ≤ VOUT ≤ VCC
Sinking Current, VOUT = VCC
Sourcing Current, VOUT = 0V
Output Transition tHL HIGH to LOW (Note 6)
Output Transition tLH LOW to HIGH
MIN TYP MAX
q
10
100
120
250
15
30
4
15
0.6
1.3
0.5
1.3
q 0.8
1.3
q
1.7
2.4
q 0.1
0.4
1.0
3
5
7
q
0.2
0.4
q 3.5
4.2
q
1
10
– 20 – 10
10
20
250
600
350 600
UNITS
µA
kBaud
kBaud
V/ µs
V/ µs
µs
µs
V
V
V
kΩ
V
V
µA
mA
mA
ns
ns
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 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. C1 = C2 = 0.2µF,
C+ = C – = 0.1µF.
Note 3: Supply current is measured with driver and receiver outputs
unloaded and the driver inputs tied high.
Note 4: Supply current and leakage current measurements in shutdown
are performed with VON/OFF = 0.1V. Supply current measurements using
DRIVER DISABLE are performed with VDRIVER DISABLE = 3V.
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: Absolute maximum externally applied voltage. Internal charge
pump may force a larger value on this pin.
TYPICAL PERFOR A CE CHARACTERISTICS
Driver Output Voltage
10
OUTPUT HIGH
8
6
4
VCC = 5.5V VCC = 5V
2
VCC = 4.5V
0
–2
VCC = 5V
–4
VCC = 5.5V
VCC = 4.5V
–6
–8
–10
–50 –25
OUTPUT LOW
RL = 3k
0 25 50 75 100 125
TEMPERATURE (°C)
LT1537 • TPC01
Receiver Input Thresholds
3.00
2.75
2.50
2.25
2.00
INPUT HIGH
1.75
1.50
1.25
INPUT LOW
1.00
0.75
0.50
–55 –25
0 25 50 75 100 125
TEMPERATURE (°C)
ILT1537 • TPC02
Supply Current vs Data Rate
80
3 DRIVERS ACTIVE
70 RL = 3k
CL = 2500pF
60
50
40
30
20
10
0
0 25 50 75 100 125 150
DATA RATE (kBAUD)
LTX1537 • TPC03
3
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