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ADM2485

High Speed, Isolated RS-485 Transceiver with Integrated Transformer Driver

Analog Devices 

ADM2485

Parameter

POWER SUPPLY CURRENT

Logic Side

Bus Side

COMMON-MODE TRANSIENT IMMUNITY1

HIGH FREQUENCY COMMON-MODE

NOISE IMMUNITY

Min

Typ

Max

Unit Test Conditions/Comments

2.5

mA RTS = 0 V, VDD1 = 5.5 V

2.3

mA 2.5 Mbps, VDD1 = 5.5 V, see Figure 23

5.0

6.5

mA 16 Mbps, VDD1 = 5.5 V, see Figure 23

1.26

mA RTS = 0 V, VDD1 = 3.3 V

1.5

mA 2.5 Mbps, VDD1 = 3.3 V, see Figure 23

2.9

mA 16 Mbps, VDD1 = 3.3 V, see Figure 23

1.7

2.5

mA RTS = 0 V

49.0

mA 2.5 Mbps, RTS = VDD1, see Figure 23 for

load conditions

55.0

75.0

mA 16 Mbps, RTS = VDD1, see Figure 23 for

load conditions

25

kV/μs Transient magnitude = 800 V, VCM = 1 kV

100

mV VHF = +5 V, −2 V < VTEST2 < +7 V,

1 MHz < fTEST < 50 MHz, see Figure 24

1 CM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. VCM is the common-mode potential

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.

Rev. A | Page 4 of 20

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