3
LT1537
E
LECTR
IC
AL C CHARA TERIST
ICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Any Driver
Output Leakage Current Shutdown V
OUT
= ±15V (Note 4) ● 10 100 µA
Data Rate R
L
= 3k, C
L
= 2500pF 120 kBaud
R
L
= 3k, C
L
= 1000pF 250 kBaud
Slew Rate R
L
= 3k, C
L
= 51pF 15 30 V/µs
R
L
= 3k, C
L
= 2500pF 4 15 V/µs
Propagation Delay Output Transition t
HL
HIGH to LOW (Note 5) 0.6 1.3 µs
Output Transition t
LH
LOW to HIGH 0.5 1.3 µs
Any Receiver
Input Voltage Thresholds Input LOW Threshold (V
OUT
= HIGH) ● 0.8 1.3 V
Input HIGH Threshold (V
OUT
= LOW) ● 1.7 2.4 V
Hysteresis ● 0.1 0.4 1.0 V
Input Resistance V
IN
= ±10V 3 5 7 kΩ
Output Voltage Output LOW, I
OUT
= –1.6mA ● 0.2 0.4 V
Output HIGH, I
OUT
= 160µA (V
CC
= 5V) ● 3.5 4.2 V
Output Leakage Current Shutdown (Note 4) 0 ≤ V
OUT
≤ V
CC
● 110 µA
Output Short-Circuit Current Sinking Current, V
OUT
= V
CC
–20 –10 mA
Sourcing Current, V
OUT
= 0V 10 20 mA
Propagation Delay Output Transition t
HL
HIGH to LOW (Note 6) 250 600 ns
Output Transition t
LH
LOW to HIGH 350 600 ns
The
● denotes specifications which apply over the operating temperature
range (0°C ≤ T
A
≤ 70°C for commercial grade and –40°C ≤ T
A
≤ 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 V
CC
= 5V and V
ON/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 V
ON/OFF
= 0.1V. Supply current measurements using
DRIVER DISABLE are performed with V
DRIVER DISABLE
= 3V.
Note 5: For driver delay measurements, R
L
= 3k and C
L
= 51pF. Trigger
points are set between the driver’s input logic threshold and the output
transition to the zero crossing (t
HL
= 1.4V to 0V and t
LH
= 1.4V to 0V).
Note 6: For receiver delay measurements, C
L
= 51pF. Trigger points are set
between the receiver’s input logic threshold and the output transition to
standard TTL/CMOS logic threshold (t
HL
= 1.3V to 2.4V and t
LH
= 1.7V to
0.8V).
Note 7: Absolute maximum externally applied voltage. Internal charge
pump may force a larger value on this pin.
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
(Note 2)
Driver Output Voltage Receiver Input Thresholds Supply Current vs Data Rate
DATA RATE (kBAUD)
0
SUPPLY CURRENT (mA)
30
40
50
75
125
LTX1537 • TPC03
20
10
0
25 50 100
60
70
80
150
3 DRIVERS ACTIVE
R
L
= 3k
C
L
= 2500pF
TEMPERATURE (°C)
–55
0.50
THRESHOLD VOLTAGE (V)
0.75
1.25
1.50
1.75
3.00
2.25
0
50
75
ILT1537 • TPC02
1.00
2.50
2.75
2.00
–25
25
100
125
INPUT HIGH
INPUT LOW
TEMPERATURE (°C)
–50
–10
DRIVER OUTPUT VOLTAGE (V)
–8
–4
–2
0
10
4
0
50
75
LT1537 • TPC01
–6
6
8
2
–25
25
100
125
V
CC
= 5V
V
CC
= 5.5V
V
CC
= 4.5V
V
CC
= 5.5V
V
CC
= 4.5V
V
CC
= 5V
OUTPUT LOW
OUTPUT HIGH
R
L
= 3k
