Datasheet

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 Data Sheet
Rev. E | Page 4 of 20
SPECIFICATIONS
V
CC
= 3.3 V ± 0.3 V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter Min Typ Max Unit Test Conditions/Comments
DRIVER
Differential Output Voltage (V
OD
) 2.0 V R
L
= 100 Ω (RS-422), V
CC
= 3.3 V ± 5% (see Figure 17)
1.5 V R
L
= 54 Ω (RS-485) (see Figure 17)
1.5 V R
L
= 60 Ω (RS-485), V
CC
= 3.3 V (see Figure 18)
∆ |V
OD
| for Complementary Output States
1
0.2 V R
L
= 54 Ω or 100 Ω (see Figure 17)
Common-Mode Output Voltage (V
OC
) 3 V R
L
= 54 Ω or 100 Ω (see Figure 17)
∆ |V
OC
| for Common-Mode Output Voltage
1
0.2 V R
L
= 54 Ω or 100 Ω (see Figure 17)
DRIVER INPUT LOGIC
CMOS Input Logic Threshold Low (V
IL
) 0.8 V
DE, DI, RE
CMOS Input Logic Threshold High (V
IH
) 2.0 V
DE, DI, RE
CMOS Logic Input Current (I
IN1
) ±2 µA
DE, DI, RE
1.0 mA V
IN
= 12 V, DE = 0 V, V
CC
= 0 V or 3.6 V Input Current—A, B (I
IN2
)
−0.8 mA V
IN
= −7 V, DE = 0 V, V
CC
= 0 V or 3.6 V
0.1 µA
V
IN
= 12 V, DE = 0 V, RE = 0 V, V
CC
= 0 V or 3.6 V,
ADM3491 only
Output Leakage—Y, Z (I
O
)
−0.1 µA
V
IN
= −7 V, DE = 0 V, RE = 0 V, V
CC
= 0 V or 3.6 V,
ADM3491 only
0.01 µA
V
IN
= 12 V, DE = 0 V, RE = V
CC
, V
CC
= 0 V or 3.6 V,
ADM3491 only
Output Leakage (Y, Z) in Shutdown Mode (I
O
)
−0.01 µA
V
IN
= −7 V, DE = 0 V, RE = V
CC
, V
CC
= 0 V or 3.6 V,
ADM3491 only
RECEIVER
Differential Input Threshold Voltage (V
TH
) −0.2 +0.2 V −7 V < V
CM
< +12 V
Input Hysteresis (∆ V
TH
) 50 mV V
CM
= 0 V
CMOS Output Voltage High (V
OH
) V
CC
– 0.4 V I
OUT
= −1.5 mA, V
ID
= 200 mV (see Figure 19)
CMOS Output Voltage Low (V
OL
) 0.4 V I
OUT
= 2.5 mA, V
ID
= 200 mV (see Figure 19)
Three-State Output Leakage Current (I
OZR
) ±1 µA V
CC
= 3.6 V, 0 V ≤ V
OUT
≤ V
CC
Input Resistance (R
IN
) 12 kΩ −7 V < V
CM
< +12 V
POWER SUPPLY CURRENT
1.1 2.2 mA
DE = V
CC
, RE = 0 V or V
CC
, no load, DI = 0 V or V
CC
Supply Current (I
CC
)
0.95 1.9 mA
DE = 0 V, RE = 0 V, no load, DI = 0 V or V
CC
Supply Current in Shutdown Mode (I
SHDN
) 0.002 1 µA
DE = 0 V, RE
= V
CC
, DI = V
CC
or 0 V
−250 mA V
OUT
= −7 V Driver Short-Circuit Output Current (I
OSD
)
250 mA V
OUT
= 12 V
Receiver Short-Circuit Output Current (I
OSR
) ±8 ±60 mA 0 V < V
RO
< V
CC
1
∆V
OD
and ∆V
OC
are the changes in V
OD
and V
OC
, respectively, when DI input changes state.