Datasheet

Data Sheet ADM1490E/ADM1491E
Rev. D | Page 3 of 16
SPECIFICATIONS
4.75 V ≤ V
CC
≤ 5.25 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
CC
= 5.0 V, unless otherwise noted.
Table 1.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
SUPPLY CURRENT
Outputs Enabled I
CC1
1.2 2.0 mA Outputs unloaded, digital inputs = V
CC
or GND
Outputs Disabled I
CC2
0.8 1.5 mA Outputs unloaded, digital inputs = V
CC
or GND
DRIVER
Differential Outputs
Differential Output Voltage, Loaded |V
OD2
| 2.0 5.0 V R
L
= 100 Ω (RS-422), see Figure 21
1.5 5.0 V R
L
= 54 Ω (RS-485), see Figure 21
|V
OD3
| 1.5 5.0 V −7 V ≤ V
TEST
≤ +12 V, see Figure 22
∆|V
OD
| for Complementary Output States ∆|V
OD2
| 0.2 V R
L
= 54 Ω or 100 Ω, see Figure 21
Common-Mode Output Voltage V
OC
3.0 V R
L
= 54 Ω or 100 Ω, see Figure 21
∆|V
OC
| for Complementary Output States ∆|V
OC
| 0.2 V R
L
= 54 Ω or 100 Ω, see Figure 21
Output Leakage Current (Y, Z) I
O
100 µA DE = 0 V, V
DD
= 0 V or 5 V, V
IN
= 12 V
I
O
−100 µA DE = 0 V, V
DD
= 0 V or 5 V, V
IN
= −7 V
Output Short-Circuit Current I
OS
250 mA −7 V < V
OUT
< +12 V
Logic Inputs DE,
RE
, DI
Input Low Voltage V
IL
0.8 V DE,
RE
, DI
Input High Voltage V
IH
2.0 V DE,
RE
, DI
Input Current I
I
−1 +1 µA DE,
RE
, DI
RECEIVER
Differential Inputs
Differential Input Threshold Voltage V
TH
−0.2 +0.2 V −7 V < V
CM
< +12 V
Input Voltage Hysteresis V
HYS
30 mV V
CM
= 0 V
Input Current (A, B)
I
I
1.0
mA
V
CM
= 12 V
−0.8 mA V
CM
= −7 V
Line Input Resistance R
IN
12 30 kΩ −7 V ≤ V
CM
≤ +12 V
Logic Outputs
Output Voltage Low V
OL
0.4 V I
OUT
= +4.0 mA, V
A
− V
B
= −0.2 V
Output Voltage High V
OH
4.0 V I
OUT
= −4.0 mA, V
A
− V
B
= +0.2 V
Short-Circuit Current 85 mA
Three-State Output Leakage Current I
OZR
±1 µA V
CC
= 5.25 V, 0.4 V < V
OUT
< 2.4 V