LT1381CS datasheet(3/8 Pages) LINER

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LT1381

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Receiver

Input Voltage Thresholds

Input Low Threshold (VOUT = High)

0.8

1.3

Input High Threshold (VOUT = Low)

1.7

2.4

Hysteresis

0.1

0.4

1.0

Input Resistance

(Note 6)

Ω

Output Voltage

Output Low, IOUT = – 1.6mA

0.2

0.4

Output High, IOUT = 160µA (VCC = 5V)

3.5

4.2

Output Short-Circuit Current

Sinking Current, VOUT = VCC

–10

Sourcing Current, VOUT = 0V

Propagation Delay

Output Transition tHL High-to-Low (Note 5)

250

600

Output Transition tLH Low-to-High

350

600

ELECTRICAL C

HARA TERISTICS (Note 2)

TYPICAL PERFOR A CE CHARACTERISTICS

Driver Maximum Output Voltage

vs Load Capacitance

TEMPERATURE (°C)

–55

–10

–8

–4

–2

LT1381 • TPC03

–6

–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

µF. All outputs are open, with all

driver inputs tied high.

–20

LOAD CAPACITANCE (nF)

–7.0

–6.0

–5.0

–4.0

LT1381 • TPC02

–5.5

–4.5

–6.5

2 DRIVERS LOADED

120k BAUD

60k BAUD

20k BAUD

LOAD CAPACITANCE (nF)

8.0

9.0

LT1381 • TPC01

7.0

6.0

5.0

7.5

8.5

6.5

5.5

2 DRIVERS LOADED

20k BAUD

60k BAUD

120k BAUD

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