4
LTC1546
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V (Notes 2, 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
OH
Transmitter Output High Current V
A
,
V
B
= 0V ● –13 –11 –9.0 mA
I
OL
Transmitter Output Low Current V
A
,
V
B
= 0V ● 9.0 11 13 mA
I
OZ
Transmitter Output Leakage Current V
A
and V
B
≤ 0.25V ● ±1 ±100 µA
R
OD
Transmitter Differential Mode Impedance ● 50 100 150 Ω
R
OC
Transmitter Common Mode Impedance –2V ≤ V
CM
≤ 2V (Figure 7) 135 150 165 Ω
t
r
, t
f
Rise or Fall Time (Figures 8, 13) 5 ns
t
PLH
Input to Output (Figures 8, 13) ● 15 35 65 ns
t
PHL
Input to Output (Figures 8, 13) ● 15 35 65 ns
∆t Input to Output Difference, t
PLH
– t
PHL
(Figures 8, 13) ● 016 ns
t
SKEW
Output to Output Skew (Figures 8, 13) 4 ns
V.35 Receiver
V
TH
Differential Receiver Input Threshold Voltage –2V ≤ V
CM
≤ 2V (Figure 9) ● –0.2 0.2 V
∆V
TH
Receiver Input Hysteresis –2V ≤ V
CM
≤ 2V (Figure 9) ● 15 40 mV
R
ID
Receiver Differential Mode Impedance –2V ≤ V
CM
≤ 2V ● 90 103 110 Ω
R
IC
Receiver Common Mode Impedance –2V ≤ V
CM
≤ 2V (Figure 10) 135 150 165 Ω
t
r
, t
f
Rise or Fall Time C
L
= 50pF (Figures 4, 14) 15 ns
t
PLH
Input to Output C
L
= 50pF (Figures 4, 14) ● 50 90 ns
t
PHL
Input to Output C
L
= 50pF (Figures 4, 14) ● 50 90 ns
∆t Input to Output Difference, t
PLH
– t
PHL
C
L
= 50pF (Figures 4, 14) ● 0425 ns
V.28 Driver
V
O
Output Voltage Open Circuit ● ±10 V
R
L
= 3k (Figure 11) ● ±5 ±8.5 V
I
SS
Short-Circuit Current V
OUT
= GND ● ±150 mA
R
OZ
Power-Off Resistance –2V < V
O
< 2V, Power Off ● 300 Ω
or No-Cable Mode
SR Slew Rate R
L
= 7k, C
L
= 0 (Figures 11, 15) ● 430V/µs
t
PLH
Input to Output R
L
= 3k, C
L
= 2500pF (Figures 11, 15) ● 1.5 2.5 µs
t
PHL
Input to Output R
L
= 3k, C
L
= 2500pF (Figures 11, 15) ● 1.5 2.5 µs
V.28 Receiver
V
THL
Input Low Threshold Voltage (Figure 12) ● 1.2 0.8 V
V
TLH
Input High Threshold Voltage (Figure 12) ● 2 1.2 V
∆V
TH
Receiver Input Hysteresis (Figure 12) ● 0 0.05 0.3 V
R
IN
Receiver Input Impedance –15V ≤ V
A
≤ 15V ● 357 kΩ
t
r
, t
f
Rise or Fall Time C
L
= 50pF (Figures 12, 16) 15 ns
t
PLH
Input to Output C
L
= 50pF (Figures 12, 16) ● 60 300 ns
t
PHL
Input to Output C
L
= 50pF (Figures 12, 16) ● 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.
Note 3: All typicals are given for V
CC
= 5V, C1 = C2 = C
VCC
= C
VDD
= 1µF,
C
VEE
= 3.3µF and T
A
= 25°C.
ELECTRICAL CHARACTERISTICS
