參數(shù)資料
型號(hào)： ADM2486BRWZ-REEL
廠商： ANALOG DEVICES INC
元件分類： 通用總線功能
英文描述： High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver
中文描述： LINE TRANSCEIVER, PDSO16
封裝： LEAD FREE, MS013AA, SOIC-16
文件頁數(shù)： 14/20頁
文件大?。?/td> 294K
代理商： ADM2486BRWZ-REEL
ADM2486
Rev. C | Page 3 of 20
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
5
V
R = ∞, see Figure 3
2.1
5
V
R = 50 (RS-422), see Figure 3
2.1
5
V
R = 27 (RS-485), see Figure 3
2.1
5
V
VTST = 7 V to 12 V, VDD1 ≥ 4.7,
|VOD| for Complementary Output States
0.2
V
R = 27 or 50 , see Figure 3
Common-Mode Output Voltage, VOC
3
V
R = 27 or 50 , see Figure 3
|VOC| for Complementary Output States
0.2
V
R = 27 or 50 , see Figure 3
Output Short-Circuit Current, VOUT = High
60
200
mA
7 V ≤ VOUT ≤ +12 V
Output Short-Circuit Current, VOUT = Low
60
200
mA
7 V ≤ VOUT ≤ +12 V
Bus Enable Output
Output High Voltage
VDD2 0.1
V
IODE = 20 A
VDD2 0.3
VDD2 0.1
V
IODE = 1.6 mA
VDD2 0.4
VDD2 0.2
V
IODE = 4 mA
Output Low Voltage
0.1
V
IODE = 20 A
0.1
0.3
V
IODE = 1.6 mA
0.2
0.4
V
IODE = 4 mA
Logic Inputs
Input High Voltage
0.7 VDD1
V
TxD, RTS, RE, PV
Input Low Voltage
0.25 VDD1
V
TxD, RTS, RE, PV
CMOS Logic Input Current (TxD, RTS, RE, PV)
10
0.01
10
A
TxD, RTS, RE, PV = VDD1 or 0 V
RECEIVER
Differential Inputs
Differential Input Threshold Voltage, VTH
200
mV
7 V ≤ VCM ≤ +12V
Input Hysteresis
70
mV
7 V ≤ VCM ≤ +12V
Input Resistance (A, B)
20
30
k
7 V ≤ VCM ≤ +12V
Input Current (A, B)
0.6
mA
VIN = +12 V
0.35
mA
VIN = 7 V
RxD Logic Output
Output High Voltage
VDD1 0.1
V
IOUT = 20 A, VA VB = 0.2 V
VDD1 0.4
VDD1 0.2
V
IOUT = 4 mA, VA VB = 0.2 V
Output Low Voltage
0.1
V
IOUT = 20 A, VA VB = 0.2 V
0.2
0.4
V
IOUT = 4 mA, VA VB = 0.2 V
Output Short-Circuit Current
7
85
mA
VOUT = GND or VCC
Three-State Output Leakage Current
±1
A
0.4 V ≤ VOUT ≤ 2.4 V
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