Datasheet

Data Sheet ADM2486
Rev. E | Page 3 of 20
SPECIFICATIONS
2.7 V ≤ V
DD1
≤ 5.5 V, 4.75 V ≤ V
DD2
≤ 5.25 V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
DRIVER
Differential Outputs
Differential Output Voltage, V
OD
5 V R = ∞, see Figure 3
2.1 5 V R = 50 Ω (RS-422), see Figure 3
2.1 5 V R = 27 Ω (RS-485), see Figure 3
2.1 5 V
V
TST
= −7 V to +12 V, V
DD1
≥ 4.7,
see Figure 4
Δ |V
OD
| for Complementary Output States 0.2 V R = 27 Ω or 50 Ω, see Figure 3
Common-Mode Output Voltage, V
OC
3 V R = 27 Ω or 50 Ω, see Figure 3
Δ |V
OC
| for Complementary Output States 0.2 V R = 27 Ω or 50 Ω, see Figure 3
Output Short-Circuit Current, V
OUT
= High 60 200 mA −7 V ≤ V
OUT
≤ +12 V
Output Short-Circuit Current, V
OUT
= Low 60 200 mA −7 V ≤ V
OUT
≤ +12 V
Driver Enable Output, DE Pin
Output High Voltage V
DD2
− 0.1 V I
ODE
= 20 µA
V
DD2
− 0.3 V
DD2
− 0.1 V I
ODE
= 1.6 mA
V
DD2
− 0.4 V
DD2
− 0.2 V I
ODE
= 4 mA
Output Low Voltage 0.1 V I
ODE
= −20 µA
0.1 0.3 V I
ODE
= −1.6 mA
0.2 0.4 V I
ODE
= −4 mA
Logic Inputs
Input High Voltage 0.7 V
DD1
V
TxD, RTS,
RE, PV
Input Low Voltage 0.25 V
DD1
V
TxD, RTS,
RE, PV
CMOS Logic Input Current (TxD, RTS, RE, PV)
−10 +0.01 +10 µA
TxD, RTS, RE, PV = V
DD1
or 0 V
RECEIVER
Differential Inputs
Differential Input Threshold Voltage, V
TH
−200 +200 mV −7 V ≤ V
CM
≤ +12 V
Input Hysteresis
70
mV
−7 V ≤ V
CM
≤ +12 V
Input Resistance (A, B) 20 30 kΩ −7 V ≤ V
CM
≤ +12 V
Input Current (A, B) 0.6 mA V
IN
= + 12 V
−0.35 mA V
IN
= −7 V
RxD Logic Output
Output High Voltage V
DD1
− 0.1 V I
OUT
= 20 µA, V
A
− V
B
= 0.2 V
V
DD1
− 0.4 V
DD1
− 0.2 V I
OUT
= 4 mA, V
A
− V
B
= 0.2 V
Output Low Voltage 0.1 V I
OUT
= −20 µA, V
A
− V
B
= −0.2 V
0.2 0.4 V I
OUT
= −4 mA, V
A
− V
B
= −0.2 V
Output Short-Circuit Current 7 85 mA V
OUT
= GND or V
CC
Three-State Output Leakage Current ±1 µA 0.4 V ≤ V
OUT
≤ 2.4 V
POWER SUPPLY CURRENT
Logic Side 1.3 mA RTS = 0 V, V
DD1
= 5.5 V
1.0 mA 2 Mbps, V
DD1
= 5.5 V, see Figure 5
4.0
mA
20 Mbps, V
DD1
= 5.5 V, see Figure 5
0.8 mA RTS = 0 V, V
DD1
= 3 V
1.1 mA 2 Mbps, V
DD1
= 3 V, see Figure 5
2.1 mA 20 Mbps, V
DD1
= 3 V, see Figure 5
Bus Side 3.0 mA RTS = 0 V
43.0 mA 2 Mbps, RTS = V
DD1
, see Figure 5
58.0 mA 20 Mbps, RTS = V
DD1
, see Figure 5