4

LTC1546

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Transmitter Output High Current

q

– 13

– 11

– 9.0

mA

Transmitter Output Low Current

q

9.0

11

13

mA

Transmitter Output Leakage Current

q

±1

±100

µA

Transmitter Differential Mode Impedance

q

50

100

150

Ω

Transmitter Common Mode Impedance

– 2V

135

150

165

Ω

Rise or Fall Time

(Figures 8, 13)

5

ns

Input to Output

(Figures 8, 13)

q

15

35

65

ns

Input to Output

(Figures 8, 13)

q

15

35

65

ns

∆t

Input to Output Difference,

(Figures 8, 13)

q

016

ns

Output to Output Skew

(Figures 8, 13)

4

ns

V.35 Receiver

Differential Receiver Input Threshold Voltage

– 2V

q

– 0.2

0.2

V

Receiver Input Hysteresis

– 2V

q

15

40

mV

Receiver Differential Mode Impedance

– 2V

q

90

103

110

Ω

Receiver Common Mode Impedance

– 2V

135

150

165

Ω

Rise or Fall Time

15

ns

Input to Output

q

50

90

ns

Input to Output

q

50

90

ns

∆t

Input to Output Difference,

q

04

25

ns

V.28 Driver

Output Voltage

Open Circuit

q

±10

V

q

±5

±8.5

V

Short-Circuit Current

q

±150

mA

Power-Off Resistance

q

300

Ω

or No-Cable Mode

SR

Slew Rate

q

430

V/

µs

Input to Output

q

1.5

2.5

µs

Input to Output

q

1.5

2.5

µs

V.28 Receiver

Input Low Threshold Voltage

(Figure 12)

q

1.2

0.8

V

Input High Threshold Voltage

(Figure 12)

q

2

1.2

V

Receiver Input Hysteresis

(Figure 12)

q

0

0.05

0.3

V

Receiver Input Impedance

– 15V

q

357

k

Ω

Rise or Fall Time

15

ns

Input to Output

q

60

300

ns

Input to Output

q

160

300

ns

Note 1: Absolute Maximum Ratings are those values beyond which the life

of the device may be impaired.

Note 2: All currents into device pins are positive; all currents out of device

are negative. All voltages are referenced to device ground unless otherwise

specified.

ELECTRICAL CHARACTERISTICS