ADM2483 datasheet(3/18 Pages) AD

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Data Sheet

ADM2483

Rev. F | Page 3 of 18

SPECIFICATIONS

2.7 V ≤ VDD1 ≤ 5.5 V, 4.75 V ≤ VDD2 ≤ 5.25 V, TA = TMIN to TMAX, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

DRIVER

Differential Outputs

Differential Output Voltage, VOD

R = ∞, see Figure 3

2.0

R = 50 Ω (RS-422), see Figure 3

1.5

R = 27 Ω (RS-485), see Figure 3

1.5

VTST = −7 V to +12 V, VDD1 ≥ 4.75,

see Figure 4

Δ |VOD| for Complementary Output States

0.2

R = 27 Ω or 50 Ω, see Figure 3

Common-Mode Output Voltage, VOC

R = 27 Ω or 50 Ω, see Figure 3

Δ |VOC| for Complementary Output States

0.2

R = 27 Ω or 50 Ω, see Figure 3

Output Short-Circuit Current, VOUT = High

−250

+250

−7 V ≤ VOUT ≤ +12 V

Output Short-Circuit Current, VOUT = Low

−250

+250

−7 V ≤ VOUT ≤ +12 V

Logic Inputs

Input High Voltage

0.7 VDD1

TxD, DE, RE, PV

Input Low Voltage

0.25 VDD1 V

TxD, DE, RE, PV

CMOS Logic Input Current (TxD, DE, RE, PV)

−10

+0.01

+10

µA

TxD, DE, RE, PV = VDD1 or 0 V

RECEIVER

Differential Inputs

Differential Input Threshold Voltage, VTH

−200

−125

−30

−7 V ≤ VCM ≤ +12 V

Input Hysteresis

−7 V ≤ VCM ≤ +12 V

Input Resistance (A, B)

150

kΩ

−7 V ≤ VCM ≤ +12 V

Input Current (A, B)

0.125

VIN = +12 V

−0.1

VIN = −7 V

RxD Logic Output

Output High Voltage

VDD1 − 0.1

IOUT = 20 µA, VA − VB = 0.2 V

VDD1 − 0.4 VDD1 − 0.2

IOUT = 4 mA, VA − VB = 0.2 V

Output Low Voltage

0.1

IOUT = −20 µA, VA − VB = −0.2 V

0.4

IOUT = −4 mA, VA − VB = −0.2 V

Output Short-Circuit Current

VOUT = GND or VCC

Three-State Output Leakage Current

±1

µA

0.4 V ≤ VOUT ≤ 2.4 V

POWER SUPPLY CURRENT

Logic Side

2.5

4.5 V ≤ VDD1 ≤ 5.5 V, outputs unloaded,

RE = 0 V

1.3

2.7 V ≤ VDD1 ≤ 3.3 V, outputs unloaded,

RE = 0 V

Bus Side

2.0

Outputs unloaded, DE = 5 V

1.7

Outputs unloaded, DE = 0 V

COMMON-MODE TRANSIENT IMMUNITY1

kV/µs

TxD = VDD1 or 0 V, VCM = 1 kV,

transient magnitude = 800 V

Common-mode transient immunity 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.

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