adm2485 Analog Devices, Inc., adm2485 Datasheet - Page 7

• Manufacturer Part Number: adm2485
• Description: High Speed Isolated Rs-485 Transceiver With Integrated Transformer Driver
• Manufacturer: Analog Devices, Inc.

VDE 0884-2 INSULATION CHARACTERISTICS
This isolator is suitable for basic electrical isolation only within the safety limit data. Maintenance of the safety data must be ensured by
means of protective circuits.
An asterisk (*) on packages denotes VDE 0884-2 approval for 560 V peak working voltage.
Table 7.
Description
INSTALLATION CLASSIFICATION PER DIN VDE 0110 FOR RATED MAINS VOLTAGE
CLIMATIC CLASSIFICATION
POLLUTION DEGREE (DIN VDE 0110: 1989-01, TABLE 1)
MAXIMUM WORKING INSULATION VOLTAGE
INPUT-TO-OUTPUT TEST VOLTAGE
HIGHEST ALLOWABLE OVERVOLTAGE
SAFETY-LIMITING VALUES
INSULATION RESISTANCE AT T
1
2
3
Transient overvoltage, t
The safety-limiting value is the maximum value allowed in the event of a failure. See Figure 23 for the thermal derating curve.
V
IO
≤150 V rms
≤300 V rms
≤400 V rms
Method B1: V
Method A (After Environmental Tests, Subgroup 1): V
Method A (After Input and/or Safety Test, Subgroup 2/3): V
Case Temperature
Input Current
Output Current
= 500 V.
IORM
× 1.875 = V
TR
= 10 sec.
2
PR
S
, 100% production tested, t
3
1
IORM
× 1.6 = V
m
IORM
= 1 sec, partial discharge < 5 pC
× 1.2 = V
Rev. 0 | Page 7 of 20
PR
, t
m
PR
= 60 sec, partial discharge <5 pC
, t
m
= 60 sec, partial discharge <5 pC
Symbol
V
V
V
T
I
I
R
S, INPUT
S, OUTPUT
S
S
IORM
PR
TR
Characteristic
I to IV
I to III
I to II
40/85/21
2
560
1050
896
672
4000
150
265
335
>10
9
ADM2485
Unit
V
V
V
V
V
°C
mA
mA
Ω
PEAK
PEAK
PEAK
PEAK
PEAK