ADM2490E
Rev. A | Page 6 of 16
ABSOLUTE MAXIMUM RATINGS
T
A
= 25°C, unless otherwise noted. Each voltage is relative to its
respective ground.
Table 8.
Parameter Rating
Storage Temperature Range −55°C to +150°C
Ambient Operating Temperature Range −40°C to +105°C
V
DD1
−0.5 V to +7 V
V
DD2
−0.5 V to +6 V
Logic Input Voltages −0.5 V to V
DD1
+ 0.5 V
Bus Terminal Voltages −9 V to +14 V
Logic Output Voltages −0.5 V to V
DD1
+ 0.5 V
Average Output Current, per Pin ±35 mA
ESD (Human Body Model)
on A, B, Y, and Z Pins
±8 kV
θ
JA
Thermal Impedance 60°C/W
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Absolute maximum ratings apply individually only, not in
combination.
ESD CAUTION
ADM2490E
Rev. A | Page 7 of 16
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
V
DD1
1
GND
1
2
RxD
3
NC
4
V
DD2
16
GND
2
15
A
14
B
13
GND
1
5
NC
12
TxD
6
Z
11
NC
7
Y
10
GND
1
8
GND
2
9
NC = NO CONNECT
ADM2490E
TOP VIEW
(Not to Scale)
05889-002
Figure 2. Pin Configuration
Table 9. Pin Function Descriptions
Pin No. Mnemonic Description
1 V
DD1
Power Supply (Logic Side). Decoupling capacitor to GND
1
required; capacitor value should be between
0.01 μF and 0.1 μF.
2, 5, 8 GND
1
Ground (Logic Side).
3 RxD Receiver Output.
4, 7, 12 NC No Connect. These pins must be left floating.
6 TxD Transmit Data.
9, 15 GND
2
Ground (Bus Side).
10 Y Driver Noninverting Output.
11 Z Driver Inverting Output.
13 B Receiver Inverting Input.
14 A Receiver Noninverting Input.
16 V
DD2
Power Supply (Bus Side). Decoupling capacitor to GND
2
required; capacitor value should be between
0.01 μF and 0.1 μF.
ADM2490E
Rev. A | Page 8 of 16
TEST CIRCUITS
V
OC
R
L
R
L
V
OD
05889-003
Figure 3. Driver Voltage Measurement
60
V
OD3
375
375
V
TEST
05889-004
Figure 4. Driver Voltage Measurement
V
DD1
GND
1
A
B
V
DD2
V
DD2
GND
2
GND
2
GALVANIC ISOLATION
Y
Z
220
100
220
TxD
RxD
05889-014
Figure 5. Supply-Current Measurement Test Circuit (See Figure 10 and Figure 11)
C
L2
C
L1
R
LDIFF
Y
Z
05889-005
Figure 6. Driver Propagation Delay
C
L
V
OUT
A
B
05889-006
Figure 7. Receiver Propagation Delay

ADM2490EBRWZ

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
RS-422/RS-485 Interface IC 5kV Sgnl Iso Hi Spd 16Mbps Full Duplex
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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