参数资料
型号: ADM2481BRWZ-RL7
厂商: Analog Devices Inc
文件页数: 14/20页
文件大小: 0K
描述: IC TXRX ISOLATED RS-485 16SOIC
标准包装: 400
系列: iCoupler®
类型: 收发器,隔离式
驱动器/接收器数: 1/1
规程: RS422/RS485
电源电压: 3.3V,5V
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 带卷 (TR)
Data Sheet
ADM2481
Rev. A | 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,
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
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.
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