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ADM2484EBRWZ

500 kbps, ESD Protected, Half-/Full-Duplex, iC oupler, Isolated RS-485 Transceiver

Analog Devices 

ADM2484E

SPECIFICATIONS

All voltages are relative to their respective grounds, 3.0 V ≤ VDD1 ≤ 5.5 V and 3.0 V ≤ VDD2 ≤ 3.6 V, all minimum/maximum specifications

apply over the entire recommended operation range, all typical specifications are at TA = 25°C, VDD1 = 5 V, andVDD2 = 3.3 V, unless

otherwise noted.

Table 1.

Parameter

SUPPLY CURRENT

Power Supply Current, Logic Side

TxD/RxD Data Rate = 500 kbps

Power Supply Current, Bus Side

TxD/RxD Data Rate = 500 kbps

DRIVER

Differential Outputs

Differential Output Voltage

∆|VOD| for Complementary Output States

Common-Mode Output Voltage

∆|VOC| for Complementary Output States

Output Leakage Current (Y, Z Pins)

Short-Circuit Output Current

Logic Inputs (DE, RE, TxD)

Input Threshold Low

Input Threshold High

Input Current

RECEIVER

Differential Inputs

Differential Input Threshold Voltage

Input Voltage Hysteresis

Input Current (A, B)

Line Input Resistance

Tristate Leakage Current

Logic Outputs

Output Voltage Low

Output Voltage High

Short-Circuit Current

COMMON-MODE TRANSIENT IMMUNITY1

Symbol Min

Typ

Max

Unit Test Conditions

IDD1

2.0

mA Unloaded

2.0

mA VDD2 = 3.6 V, half duplex configuration,

RTERMINATION = 120 Ω, see Figure 20

IDD2

3.0

mA Unloaded

40

mA VDD2 = 3.6 V, half duplex configuration,

RTERMINATION = 120 Ω, see Figure 20

|VOD|

∆|VOD|

VOC

∆|VOC|

IO

IOS

VIL

VIH

II

2.0

1.5

1.5

−30

0.25 × VDD1

−10

+0.01

3.6

V

Loaded, RL = 100 Ω (RS-422), see

Figure 14

3.6

V

RL = 54 Ω (RS-485), see Figure 14

3.6

V

−7 V ≤ VTEST ≤ 12 V, see Figure 15

0.2

V

RL = 54 Ω or 100 Ω, see Figure 14

3.0

V

RL = 54 Ω or 100 Ω, see Figure 14

0.2

V

RL = 54 Ω or 100 Ω, see Figure 14

+30

µA DE = 0 V, VDD2 = 0 V or 3.3 V, VIN = +12 V

µA DE = 0 V, VDD2 = 0 V or 3.3 V, VIN = −7 V

250

mA

V

0.7 × VDD1 V

+10

µA

VTH

VHYS

II

RIN

IOZR

VOLRxD

VOHRxD

−200

−100

96

−125

15

−30

+125

±1

VDD1 − 0.3

25

0.2

0.4

VDD1 − 0.2

100

mV −7 V < VCM < +12 V

mV VOC = 0 V

µA DE = 0 V, VDD = 0 V or 3.6 V, VIN = +12 V

µA DE = 0 V, VDD = 0 V or 3.6 V, VIN = −7 V

kΩ −7 V < VCM < +12 V

µA

VDD1 = 5 V, 0 V < VOUT < VDD1

V

V

mA

kV/µs

IORxD = 1.5 mA, VA − VB = −0.2 V

IORxD = −1.5 mA, VA − VB = +0.2 V

VCM = 1 kV, transient magnitude = 800 V

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. C | Page 3 of 16

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