ADM2481BRWZ datasheet(3/20 Pages) AD

номер детали	ADM2481BRWZ

подробное описание детали	Half-Duplex, iCoupler Isolated RS-485 Transceiver

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ADM2481

Rev. 0 | Page 3 of 20

SPECIFICATIONS

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

Table 1.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

DRIVER

Differential Outputs

Differential Output Voltage

5

V

RL = ∞, see Figure 16

VOD

2.0

5

V

RL = 50 Ω (RS-422), see Figure 16

VOD

1.5

5

V

RL = 27 Ω (RS-485), see Figure 16

VOD3

1.5

5

V

VTEST = −7 V to +12 V, VDD1 ≥ 4.75,

see Figure 17

Δ |VOD| for Complementary Output States

0.2

V

RL = 27 Ω or 50 Ω, see Figure 16

Common-Mode Output Voltage

VOC

3

V

RL = 27 Ω or 50 Ω, see Figure 16

Δ |VOC| for Complementary Output States

0.2

V

RL = 27 Ω or 50 Ω, see Figure 16

Output Short-Circuit Current,

ISC

VOUT = High

−250

+250

mA

−7 V ≤ VOUT ≤ +12 V

VOUT = Low

−250

+250

mA

−7 V ≤ VOUT ≤ +12 V

Logic Inputs

Input High Voltage

VIH

0.7 VDD1

V

TxD, DE, RE

Input Low Voltage

VIL

0.25 VDD1

V

TxD, DE, RE

CMOS Logic Input Current (TxD, DE, RE)

II

−10

+0.01

+10

μA

TxD, DE, RE = VDD1 or 0 V

RECEIVER

Differential Inputs

Differential Input Threshold Voltage

VTH

−200

−125

−30

mV

−7 V ≤ VCM ≤ +12 V

Input Hysteresis

VHYS

20

mV

−7 V ≤ VCM ≤ +12 V

Input Resistance (A, B)

96

150

kΩ

−7 V ≤ VCM ≤ +12 V

Input Current (A, B)

0.125

mA

VIN = 12 V

−0.1

mA

VIN = −7 V

RxD Logic Output

Output High Voltage

VOH

VDD1 − 0.1

V

IOUT = 20 μA, VA − VB = 0.2 V

VDD1 − 0.4

VDD1 − 0.2

V

IOUT = 4 mA, VA − VB = 0.2 V

Output Low Voltage

VOL

0.1

V

IOUT = −20 μA, VA − VB = −0.2 V

0.4

V

IOUT = −4 mA, VA − VB = −0.2 V

Output Short-Circuit Current

ISC

7

85

mA

VOUT = GND or VCC

Three-State Output Leakage Current

±1

μA

0.4 V ≤ VOUT ≤ 2.4 V

POWER SUPPLY CURRENT

Logic Side

IDD1

2.5

mA

4.5 V ≤ VDD1 ≤ 5.5 V, outputs

unloaded, RE = 0 V

1.3

mA

3.0 V ≤ VDD1 ≤ 3.6 V, outputs

unloaded, RE = 0 V

Bus Side

IDD2

2.0

mA

Outputs unloaded, DE = 5 V

1.7

mA

Outputs unloaded, DE = 0 V

COMMON-MODE TRANSIENT IMMUNITY1

VCM

25

kV/μs

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

transient magnitude = 800 V

1 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.

Аналогичный номер детали - ADM2481BRWZ

производитель	номер детали	датащи	подробное описание детали
Analog Devices	ADM2481BRWZ	364Kb / 17P	Half-Duplex, iCoupler Isolated RS-485 Transceiver Rev. B
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Аналогичное описание - ADM2481BRWZ

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