参数资料
型号: ADM3491AR-REEL7
厂商: Analog Devices Inc
文件页数: 5/20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)
Data Sheet
ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
Rev. E | Page 13 of 20
SWITCHING CHARACTERISTICS
IN
OUT
1.5V
+3V
0
≈ +2V
≈ –2V
tDD
tTD
50%
10%
90%
05
52
4-
006
Figure 26. Driver Differential Output Delay and Transition Times
3V
0V
VOH
VOL
VOH
VOL
VOM
IN
A/Y
OUT
B/Z
OUT
1.5V
tPLH
tPHL
tPLH
05
52
4-
00
7
Figure 27. Driver Propagation Delays
0
VOH
0
3V
1.5V
0.25V
IN
OUT
VOM
tPZH
tPHZ
05
52
4-
00
8
Figure 28. Driver Enable and Disable Times (tPZH, tPSH, tPHZ)
VOL
VCC
0
3V
0.25V
IN
OUT
1.5V
tPSL
tPLZ
VOM
05
52
4-
00
9
Figure 29. Driver Enable and Disable Times (tPZL, tPSL, tPLZ)
05
52
4-
0
10
3V
0
VCC
0
IN
OUT
VOM
1.5V
tRPHL
tRPLH
Figure 30. Receiver Propagation Delays
+3V
0
VOH
0
S1 OPEN
S2 CLOSED
S3 = +1.5V
S1 CLOSED
S2 OPEN
S3 = –1.5V
S1 OPEN
S2 CLOSED
S3 = +1.5V
S1 CLOSED
S2 OPEN
S3 = –1.5V
+3V
0
VCC
VOL
+3V
0
VCC
VOL
+3V
0
VOH
0
1.5V
IN
OUT
IN
OUT
IN
OUT
IN
OUT
tPRZL
tPRSL
tPRLZ
tPRHZ
+0.25V
1.5V
tPRZH
tPRSH
0
55
24
-0
11
Figure 31. Receiver Enable and Disable Times
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