Datasheet
ADM2482E/ADM2487E
Rev. A | Page 3 of 20
SPECIFICATIONS
Each voltage is relative to its respective ground; 3.0 V ≤ V
DD1
≤ 5.5 V, 3.0 V ≤ V
DD2
≤ 3.6 V. All minimum/maximum specifications apply
over the entire recommended operation range, unless otherwise noted. All typical specifications are at T
A
= 25°C, V
DD1
= 5 V, V
DD2
= 3.3 V,
unless otherwise noted.
Table 1.
Parameter Symbol Min Typ Max Unit Test Conditions
SUPPLY CURRENT
Power Supply Current, Logic Side I
DD1
TxD/RxD Data Rate < 500 kbps 3.5 mA Unloaded output
ADM2487E TxD/RxD Data Rate = 500 kbps 4 mA Half-duplex configuration,
R
TERMINATION
= 120 Ω, see Figure 25
ADM2482E TxD/RxD Data Rate = 16 Mbps 6.0 mA Half-duplex configuration,
R
TERMINATION
= 120 Ω, see Figure 25
Power Supply Current, Bus Side I
DD2
TxD/RxD Data Rate < 500 kbps 17 mA Unloaded output
ADM2487E TxD/RxD Data Rate = 500 kbps 40 mA V
DD2
= 3.6 V, half-duplex
configuration, R
TERMINATION
= 120 Ω,
see
Figure 25
ADM2482E TxD/RxD Data Rate = 16 Mbps 50 mA V
DD2
= 3.6 V, half-duplex
configuration, R
TERMINATION
= 120 Ω,
see
Figure 25
DRIVER
Differential Outputs
Differential Output Voltage, Loaded |V
OD2
| 2.0 5.0 V
R
L
= 100 Ω (RS-422), see Figure 19
1.5 5.0 V
R
L
= 54 Ω (RS-485), see Figure 19
|V
OD3
| 1.5 5.0 V
−7 V ≤ V
TEST
≤ +12 V, see Figure 20
∆|V
OD
| for Complementary Output States ∆|V
OD
| 0.2 V
R
L
= 54 Ω or 100 Ω, see Figure 19
Common-Mode Output Voltage V
OC
3.0 V
R
L
= 54 Ω or 100 Ω, see Figure 19
∆|V
OC
| for Complementary Output States ∆|V
OC
| 0.2 V
R
L
= 54 Ω or 100 Ω, see Figure 19
Short-Circuit Output Current I
OS
250 mA
Output Leakage Current (Y, Z) I
O
125 μA
DE = 0 V,
RE
= 0 V, V
CC
= 0 V or
3.6 V, V
IN
= 12 V
−100 μA
DE = 0 V,
RE
= 0 V, V
CC
= 0 V or
3.6 V, V
IN
= −7 V
Logic Inputs
Input Threshold Low V
IL
0.25 × V
DD1
V
DE,
RE
, TxD
Input Threshold High V
IH
0.7 × V
DD1
V
DE,
RE
, TxD
Input Current I
I
−10 +0.01 +10 μA
DE,
RE
, TxD
RECEIVER
Differential Inputs
Differential Input Threshold Voltage V
TH
−200 −125 −30 mV −7 V < V
CM
< +12 V
Input Voltage Hysteresis V
HYS
15 mV V
OC
= 0 V
Input Current (A, B) I
I
125 μA DE = 0 V, V
DD
= 0 V or 3.6 V,
V
IN
= 12 V
−125 μA DE = 0 V, V
DD
= 0 V or 3.6 V,
V
IN
= −7 V
Line Input Resistance R
IN
96 kΩ −7 V < V
CM
< +12 V
Logic Outputs
Output Voltage Low V
OLRxD
0.2 0.4 V I
ORxD
= 1.5 mA, V
A
− V
B
= −0.2 V
Output Voltage High V
OHRxD
V
DD1
− 0.3 V
DD1
− 0.2 V I
ORxD
= −1.5 mA, V
A
− V
B
= 0.2 V
Short-Circuit Current I
OS
100 mA
Tristate Output Leakage Current I
OZR
±1 μA V
DD1
= 5.0 V, 0 V < V
O
< V
DD1