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| 型号： | ADM3493ARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS-422/485 3.3V 8-SOIC |
| 标准包装： | 98 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
| 产品目录页面： | 790 (CN2011-ZH PDF) |
ADM3493
Rev. 0 | Page 3 of 12
SPECIFICATIONS
VCC = 3.3 V ±0.3 V, TA = TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Units
Test Conditions/Comments
DRIVER
Differential Output Voltage, VOD
2.0
V
RL = 100 Ω (RS-422), Vcc = 3.3 V
±5% (see Figure 3)
1.5
V
1.5
V
RL = 60 Ω (RS-485), Vcc = 3.3 V
(see Figure 4)
0.2
V
Common-Mode Output Voltage, VOC
3
V
0.2
V
DRIVER INPUT LOGIC
CMOS Input Logic Threshold Low, VIH
0.8
V
DE, DI, RE
CMOS Input Logic Threshold High, VIL
2.0
V
DE, DI, RE
CMOS Logic Input Current, IN1
±2
μA
DE, DI, RE
60
μA
VIN = 12 V
Input Current (A, B), IN2
60
μA
VIN = 7 V
DE = 0 V
VCC = 0 V or 3.6 V
RECEIVER
Differential Input Threshold Voltage, VTH
0.2
V
7V < VCM < + 12 V
Input Hysteresis,
Δ VTH
50
mV
VCM = 0 V
CMOS Output Voltage High, VOH
Vcc – 0.4
V
IOUT = 1.5 mA, VID = 200 mV
(see Figure 5)
CMOS Output Voltage Low, VOL
0.4
V
IOUT = 2.5mA, VID = 200mV
(see Figure 5)
Three-State Output Leakage Current, IOZR
±1
μA
Vcc = 3.6 V, 0 V
≤ VOUT ≤ Vcc
Input Resistance, RIN
96
kΩ
7 V < VCM < + 12 V
POWER SUPPLY CURRENT
DE = VCC
1.1
2.2
mA
RE = 0 V or VCC
DE = VCC
Supply Current
0.95
1.9
mA
RE = 0 V
No load,
DI = 0 V or VCC
Supply Current in Shutdown Mode, ISHDN
0.002
1
μA
DE = 0 V, RE = VCC, DI = VCC or 0 V
250
mA
VOUT = 7 V
Driver Short-Circuit Output Current, IOSD
250
mA
VOUT = 12 V
Receiver Short-Circuit Output Current, IOSR
±8
±60
mA
0 V < VRO < VCC
1
ΔVOD and ΔVOC are the changes in VOD and VOC, respectively, when DI input changes state.
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