参数资料
型号: ADM485AR
厂商: Analog Devices Inc
文件页数: 11/16页
文件大小: 0K
描述: IC TX/RX SINGLE RS-485 5V 8SOIC
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: 4.75 V ~ 5.25 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
ADM485
Rev. F | Page 4 of 16
TIMING SPECIFICATIONS
VCC = 5 V ± 5%, all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Propagation Delay Input to Output, tPLH, tPHL
2
10
15
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22
Driver Output to OUTPUT, tSKEW
1
5
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22
Driver Rise/Fall Time, tR, tF
8
15
ns
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22
Driver Enable to Output Valid
10
25
ns
RL = 110 Ω, CL = 50 pF, see Figure 23
Driver Disable Timing
10
25
ns
RL = 110 Ω, CL = 50 pF, see Figure 23
Matched Enable Switching |tZH tZL|
0
2
ns
RL = 110 Ω, CL = 50 pF, see Figure 231
Matched Disable Switching |tHZ tLZ|
0
2
ns
RL = 110 Ω, CL = 50 pF, see Figure 231
RECEIVER
Propagation Delay Input to Output, tPLH, tPHL
8
15
30
ns
CL = 15 pF, see Figure 24
Skew |tPLH tPHL|
5
ns
CL = 15 pF, see Figure 24
Receiver Enable, tZH, tZL
5
20
ns
CL = 15 pF, RL = 1 kΩ, see Figure 25
Receiver Disable, tHZ, tLZ
5
20
ns
CL = 15 pF, RL = 1 kΩ, see Figure 25
Tx Pulse Width Distortion
1
ns
Rx Pulse Width Distortion
1
ns
1 Guaranteed by characterization.
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