参数资料
型号: ADM2481BRWZ-RL7
厂商: Analog Devices Inc
文件页数: 15/20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)
ADM2481
Data Sheet
Rev. A | Page 4 of 20
TIMING SPECIFICATIONS
3.0 V ≤ VDD1 ≤ 5.5 V, 4.75 V ≤ VDD2 ≤ 5.25 V, TA = TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Maximum Data Rate
500
kbps
Propagation Delay
tPLH, tPHL
250
620
ns
RL = 54 , CL1 = CL2 = 100 pF, see Figure 18 and Figure 22
Skew
tSKEW
40
ns
RL = 54 , CL1 = CL2 = 100 pF, see Figure 18 and Figure 22
Rise/Fall Time
tR, tF
200
600
ns
RL = 54 , CL1 = CL2 = 100 pF, see Figure 18 and Figure 22
Enable Time
1050
ns
RL = 500 , CL = 100 pF, see Figure 19 and Figure 24
Disable Time
1050
ns
RL = 500 , CL = 15 pF, see Figure 19 and Figure 24
RECEIVER
Propagation Delay
tPLH, tPHL
400
1050
ns
Differential Skew
tSKEW
250
ns
Enable Time
25
70
ns
RL = 1 k, CL = 15 pF, see Figure 21 and Figure 25
Disable Time
40
70
ns
RL = 1 k, CL = 15 pF, see Figure 21 and Figure 25
PACKAGE CHARACTERISTICS
Table 3.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions
Resistance (Input-Output)1
RI-O
1012
Capacitance (Input-Output)1
CI-O
3
pF
f = 1 MHz
Input Capacitance2
CI
4
pF
1
Device is considered a 2-terminal device: Pin 1 to Pin 8 are shorted together, and Pin 9 to Pin16 are shorted together.
2
Input capacitance is from any input data pin to ground.
REGULATORY INFORMATION
Table 4. ADM2481 Approvals
Organization
Approval Type
Notes
UL
Recognized under the Component Recognition
Program of Underwriters Laboratories, Inc.
In accordance with UL 1577, each ADM2481 is proof tested by
applying an insulation test voltage of ≥ 3000 V rms for 1 second
(current leakage detection limit = 5 A).
VDE
Certified according to DIN V VDE V 0884-10
(VDE V 0884-10): 2006-12
In accordance with DIN V VDE V 0884-10, each ADM2481 is proof
tested by applying an insulation test voltage of ≥ 1050 V peak for
1 second (partial discharge detection limit = 5 pC).
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 5.
Parameter
Symbol
Value
Unit
Conditions
Rated Dielectric Insulation Voltage
2500
V rms
1-minute duration
Minimum External Air Gap (Clearance)
L(I01)
7.7
mm
Measured from input terminals to output
terminals, shortest distance through air
Minimum External Tracking (Creepage)
L(I02)
7.6
mm
Measured from input terminals to output
terminals, shortest distance along body
Minimum Internal Gap (Internal Clearance)
0.017 min
mm
Insulation distance through insulation
Tracking Resistance (Comparative Tracking Index)
CTI
>175
V
DIN IEC 112/VDE 0303 Part 1
Isolation Group
IIIa
Material Group (Table 1 in DIN VDE 0110,1/89)
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