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参数资料
| 型号： | ADM2487EBRWZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485 ISO W/ESD 16SOIC |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | ADM2487EBRWZ-REEL7DKR |
ADM2482E/ADM2487E
Rev. A | Page 3 of 20
SPECIFICATIONS
Each voltage is relative to its respective ground; 3.0 V ≤ VDD1 ≤ 5.5 V, 3.0 V ≤ VDD2 ≤ 3.6 V. All minimum/maximum specifications apply
over the entire recommended operation range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = 5 V, VDD2 = 3.3 V,
unless otherwise noted.
Table 1.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions
SUPPLY CURRENT
Power Supply Current, Logic Side
IDD1
TxD/RxD Data Rate < 500 kbps
3.5
mA
Unloaded output
ADM2487E TxD/RxD Data Rate = 500 kbps
4
mA
Half-duplex configuration,
RTERMINATION = 120 Ω, see
ADM2482E TxD/RxD Data Rate = 16 Mbps
6.0
mA
Half-duplex configuration,
RTERMINATION = 120 Ω, see
Power Supply Current, Bus Side
IDD2
TxD/RxD Data Rate < 500 kbps
17
mA
Unloaded output
ADM2487E TxD/RxD Data Rate = 500 kbps
40
mA
VDD2 = 3.6 V, half-duplex
configuration, RTERMINATION = 120 Ω,
see
ADM2482E TxD/RxD Data Rate = 16 Mbps
50
mA
VDD2 = 3.6 V, half-duplex
configuration, RTERMINATION = 120 Ω,
see
DRIVER
Differential Outputs
Differential Output Voltage, Loaded
|VOD2|
2.0
5.0
V
RL = 100 Ω (RS-422), see
1.5
5.0
V
RL = 54 Ω (RS-485), see
|VOD3|
1.5
5.0
V
7 V ≤ VTEST ≤ +12 V, see
|VOD| for Complementary Output States
|VOD|
0.2
V
RL = 54 Ω or 100 Ω, see
Common-Mode Output Voltage
VOC
3.0
V
RL = 54 Ω or 100 Ω, see
|VOC| for Complementary Output States
|VOC|
0.2
V
RL = 54 Ω or 100 Ω, see
Short-Circuit Output Current
IOS
250
mA
Output Leakage Current (Y, Z)
IO
125
μA
DE = 0 V, RE = 0 V, VCC = 0 V or
3.6 V, VIN = 12 V
100
μA
DE = 0 V, RE = 0 V, VCC = 0 V or
3.6 V, VIN = 7 V
Logic Inputs
Input Threshold Low
VIL
0.25 × VDD1
V
DE, RE, TxD
Input Threshold High
VIH
0.7 × VDD1
V
DE, RE, TxD
Input Current
II
10
+0.01
+10
μA
DE, RE, TxD
RECEIVER
Differential Inputs
Differential Input Threshold Voltage
VTH
200
125
30
mV
7 V < VCM < +12 V
Input Voltage Hysteresis
VHYS
15
mV
VOC = 0 V
Input Current (A, B)
II
125
μA
DE = 0 V, VDD = 0 V or 3.6 V,
VIN = 12 V
125
μA
DE = 0 V, VDD = 0 V or 3.6 V,
VIN = 7 V
Line Input Resistance
RIN
96
kΩ
7 V < VCM < +12 V
Logic Outputs
Output Voltage Low
VOLRxD
0.2
0.4
V
IORxD = 1.5 mA, VA VB = 0.2 V
Output Voltage High
VOHRxD
VDD1 0.3
VDD1 0.2
V
IORxD = 1.5 mA, VA VB = 0.2 V
Short-Circuit Current
IOS
100
mA
Tristate Output Leakage Current
IOZR
±1
μA
VDD1 = 5.0 V, 0 V < VO < VDD1
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