adm2491e Analog Devices, Inc., adm2491e Datasheet - Page 3

• Manufacturer Part Number: adm2491e
• Description: High Speed, Esd-protected, Half-/full-duplex, Icoupler Isolated Rs-485 Transceiver
• Manufacturer: Analog Devices, Inc.

SPECIFICATIONS
All voltages are relative to their respective ground; 3.0 V ≤ V
apply over the entire recommended operation range, unless otherwise noted. All typical specifications are at T
5.0 V, unless otherwise noted.
Table 1.
Parameter
SUPPLY CURRENT
DRIVER
RECEIVER
COMMON-MODE TRANSIENT
1
CM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. V
difference between the logic and bus sides. The transient magnitude is the range over which the common mode is slewed. The common-mode voltage slew rates
apply to both rising and falling common-mode voltage edges.
Power Supply Current, Logic Side
Power Supply Current, Bus Side
Differential Outputs
Logic Inputs DE, RE, TxD
Differential Inputs
Logic Outputs
IMMUNITY
TxD/RxD Data Rate = 2 Mbps
TxD/RxD Data Rate = 16 Mbps
TxD/RxD Data Rate = 2 Mbps
TxD/RxD Data Rate = 16 Mbps
Differential Output Voltage,
∆|V
Common-Mode Output Voltage
∆|V
Output Leakage Current (Y, Z)
Short-Circuit Output Current
Input Threshold Low
Input Threshold High
Input Current
Differential Input Threshold
Input Voltage Hysteresis
Input Current (A, B)
Line Input Resistance
Output Voltage Low
Output Voltage High
Short-Circuit Current
Three-State Output Leakage
Loaded
Output States
Output States
OD
OC
| for Complementary
| for Complementary
1
Symbol
I
I
I
I
|V
∆|V
V
∆|V
I
I
I
V
V
I
V
V
I
R
V
V
I
DD1
DD1
DD2
DD2
O
O
OS
TxD
I
OZR
OC
ILTxD
IHTRxD
TH
HYS
IN
OLRxD
OHRxD
OD
OD
OC
|
|
|
Min
2.0
1.5
1.5
−100
0.25 × V
−10
−0.2
−0.8
12
V
25
DD1
− 0.3
DD1
DD1
Rev. 0 | Page 3 of 16
Typ
+0.01
30
0.2
V
≤ 5.5 V, 4.5 V ≤ V
DD1
− 0.2
Max
3.0
6
4.0
50
5.0
5.0
5.0
0.2
3.0
0.2
100
250
0.7 × V
+10
+0.2
+1.0
0.4
100
±1
DD2
DD1
≤ 5.5 V. All minimum/maximum specifications
Unit
mA
mA
mA
mA
V
V
V
V
V
V
μA
μA
mA
V
V
μA
V
mV
mA
mA
kΩ
V
V
mA
μA
kV/μs
Test Conditions
Unloaded output
Half-duplex configuration,
R
Unloaded output
V
R
R
R
−7 V ≤ V
R
R
R
DE = 0 V, V
DE = 0 V, V
V
V
V
I
I
V
V
ORxD
ORxD
TERMINATION
DD2
TERMINATION
L
L
L
L
L
OC
OC
OC
DD1
CM
= 100 Ω (RS-422), see Figure 3
= 54 Ω (RS-485), see Figure 3
= 54 Ω or 100 Ω, see Figure 3
= 54 Ω or 100 Ω, see Figure 3
= 54 Ω or 100 Ω, see Figure 3
= 0 V
= 12 V
= −7 V
= 1 kV, transient magnitude = 800 V
= 5.5 V, half-duplex configuration,
= 1.5 mA, V
= −1.5 mA, V
= 5.5 V, 0 V < V
TEST1
CM
A
DD2
DD2
= 120 Ω, see Figure 5
= 120 Ω, see Figure 5
is the common-mode potential
= 25°C, V
≤ 12 V, see Figure 4
= 0 V or 5 V, V
= 0 V or 5 V, V
A
− V
A
− V
OUT
B
ADM2491E
= −0.2 V
B
DD1
< V
= 0.2 V
DD1
= V
IN
IN
= 12 V
= −7 V
DD2
=