参数资料
型号: ADM3491AR-REEL7
厂商: Analog Devices Inc
文件页数: 17/20页
文件大小: 0K
描述: IC TXRX RS-485 HS FD 3.3 14SOIC
标准包装: 1,000
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: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOICN
包装: 带卷 (TR)
ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
Data Sheet
Rev. E | Page 6 of 20
TIMING SPECIFICATIONS—ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
VCC = 3.3 V, TA = 25°C, unless otherwise noted.
Table 5.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
RECEIVER
Time to Shutdown (tSHDN)
ADM3483/ADM3485/ADM34911
190
300
ns
Propagation Delay, Low-to-High Level (tRPLH)
ADM3485/ADM3490/ADM3491
25
65
90
ns
VID = 0 V to 3.0 V, CL = 15 pF (see Figure 24 and Figure 30)
ADM3483/ADM3488
25
75
120
ns
Propagation Delay, High-to-Low Level (tRPHL)
ADM3485/ADM3490/ADM3491
25
65
90
ns
VID = 0 V to 3.0 V, CL = 15 pF (see Figure 24 and Figure 30)
ADM3483/ADM3488
25
75
120
ns
|tPLH – tPHL| Propagation Delay Skew (tRPDS)
ADM3485/ADM3490/ADM3491
10
ns
VID = 0 V to 3.0 V, CL = 15 pF (see Figure 24 and Figure 30)
ADM3483/ADM3488
20
ns
RECEIVER OUTPUT ENABLE/DISABLE TIMES
(ADM3483/ADM3485/ADM3491 ONLY)
Output Enable Time to Low Level (tPRZL)
25
50
ns
CL = 15 pF (see Figure 25 and Figure 31)
Output Enable Time to High Level (tPRZH)
25
50
ns
CL = 15 pF (see Figure 25 and Figure 31)
Output Disable Time from High Level (tPRHZ)
25
45
ns
CL = 15 pF (see Figure 25 and Figure 31)
Output Disable Time from Low Level (tPRLZ)
25
45
ns
CL = 15 pF (see Figure 25 and Figure 31)
Output Enable Time from Shutdown to
Low Level (tPRSL)
720
1400
ns
CL = 15 pF (see Figure 25 and Figure 31)
Output Enable Time from Shutdown to
High Level (tPRSH)
720
1400
ns
CL = 15 pF (see Figure 25 and Figure 31)
1 The transceivers are put into shutdown by bringing the RE high and DE low. If the inputs are in this state for less than 80 ns, the parts are guaranteed not to enter
shutdown. If the parts are in this state for 300 ns or more, the parts are guaranteed to enter shutdown.
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