LT1537CSW datasheet(3/8 Pages) LINER

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LT1537

ELECTRICAL C

HARA TERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Any Driver

Output Leakage Current

Shutdown VOUT = ±15V (Note 4)

100

µA

Data Rate

RL = 3k, CL = 2500pF

120

kBaud

RL = 3k, CL = 1000pF

250

kBaud

Slew Rate

RL = 3k, CL = 51pF

µs

RL = 3k, CL = 2500pF

µs

Propagation Delay

Output Transition tHL HIGH to LOW (Note 5)

0.6

1.3

µs

Output Transition tLH LOW to HIGH

0.5

1.3

µs

Any 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

VIN = ±10V

Ω

Output Voltage

Output LOW, IOUT = – 1.6mA

0.2

0.4

Output HIGH, IOUT = 160µA (VCC = 5V)

3.5

4.2

Output Leakage Current

Shutdown (Note 4) 0

≤ VOUT ≤ VCC

110

µA

Output Short-Circuit Current

Sinking Current, VOUT = VCC

– 20

– 10

Sourcing Current, VOUT = 0V

Propagation Delay

Output Transition tHL HIGH to LOW (Note 6)

250

600

Output Transition tLH LOW to HIGH

350

600

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 – = 0.1

µF.

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.

HARA TERISTICS

TYPICALPERFOR

(Note 2)

Driver Output Voltage

Receiver Input Thresholds

Supply Current vs Data Rate

DATA RATE (kBAUD)

125

LTX1537 • TPC03

100

150

3 DRIVERS ACTIVE

RL = 3k

CL = 2500pF

TEMPERATURE (

°C)

–55

0.50

0.75

1.25

1.50

1.75

3.00

2.25

ILT1537 • TPC02

1.00

2.50

2.75

2.00

–25

100

125

INPUT HIGH

INPUT LOW

TEMPERATURE (

°C)

–50

–10

–8

–4

–2

LT1537 • TPC01

–6

–25

100

125

VCC = 5V

VCC = 5.5V

VCC = 4.5V

VCC = 5.5V

VCC = 4.5V

VCC = 5V

OUTPUT LOW

OUTPUT HIGH

RL = 3k

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