3
LT1381
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Receiver
Input Voltage Thresholds
Input Low Threshold (VOUT = High)
0.8
1.3
V
Input High Threshold (VOUT = Low)
1.7
2.4
V
Hysteresis
q
0.1
0.4
1.0
V
Input Resistance
(Note 6)
3
5
7
k
Output Voltage
Output Low, IOUT = – 1.6mA
q
0.2
0.4
V
Output High, IOUT = 160A (VCC = 5V)
q
3.5
4.2
V
Output Short-Circuit Current
Sinking Current, VOUT = VCC
–10
mA
Sourcing Current, VOUT = 0V
10
20
mA
Propagation Delay
Output Transition tHL High-to-Low (Note 5)
250
600
ns
Output Transition tLH Low-to-High
350
600
ns
ELECTRICAL C
C
HARA TERISTICS (Note 2)
TYPICAL PERFOR A CE CHARACTERISTICS
WU
Driver Maximum Output Voltage
vs Load Capacitance
TEMPERATURE (°C)
–55
–10
DRIVER
OUTPUT
VOLTAGE
(V)
–8
–4
–2
0
10
4
0
50
75
LT1381 TPC03
–6
6
8
2
–25
25
100
125
RL = 3k
VCC = 5.5V
VCC = 5V
VCC = 4.5V
VCC = 5V
VCC = 5.5V
OUTPUT HIGH
OUTPUT LOW
Driver Minimum Output Voltage
vs Load Capacitance
Driver Output Voltage
Note 4: 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 5: 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 6: Tested at VIN = ±10V.
The q denotes specifications which apply over the full operating
temperature range.
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, unless otherwise specified.
Note 3: Supply current is measured as the average over several charge
pump cycles. C + = C – = C1 = C2 = 0.1
F. All outputs are open, with all
driver inputs tied high.
–20
LOAD CAPACITANCE (nF)
–7.0
PEAK
OUTPUT
VOLTAGE
(V)
–6.0
–5.0
–4.0
24
6
8
LT1381 TPC02
10
13
5
7
9
–5.5
–4.5
–6.5
0
2 DRIVERS LOADED
120k BAUD
60k BAUD
20k BAUD
LOAD CAPACITANCE (nF)
0
PEAK
OUTPUT
VOLTAGE
(V)
8.0
9.0
8
LT1381 TPC01
7.0
6.0
5.0
2
4
6
10
7.5
8.5
6.5
5.5
7
1
3
5
9
2 DRIVERS LOADED
20k BAUD
60k BAUD
120k BAUD