参数资料
型号: ADM489ABRZ-REEL7
厂商: Analog Devices Inc
文件页数: 2/16页
文件大小: 0K
描述: IC TXRX RS485/422 DIFF 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: 4.5 V ~ 5.5 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)
ADM488A/ADM489A
Rev. A | Page 10 of 16
SWITCHING CHARACTERISTICS
Z
Y
tPLH
tPHL
1/2VO
VO
90% POINT
10% POINT
90% POINT
tDR
tDF
–VO
VDIFF
+VO
0V
VCC
VCC/2
08498-
011
VDIFF = V(Y) – V(Z)
Figure 16. Driver Propagation Delay, Rise/Fall Timing
08498-
012
tPLH
tPHL
A – B
RO
0V
1.5V
VOH
VOL
tSKEW = |tPLH tPHL|
Figure 17. Receiver Propagation Delay
VOH
VOL
VOL + 0.5V
VOH – 0.5V
DE
Y, Z
VCC
0V
0.5VCC
tZL
tLZ
tZH
tHZ
2.3V
08498-
013
Figure 18. Driver Enable/Disable Timing
tZH
tZL
tLZ
tHZ
OUTPUT LOW
OUTPUT HIGH
1.5V
RO
RE
0V
0.7VCC
0.3VCC
VOL
VOH
VOL + 0.5V
VOH – 0.5V
08498-
014
0.5VCC
Figure 19. Receiver Enable/Disable Timing
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