RL
參數(shù)資料
型號(hào): ADM3491ARZ
廠商: Analog Devices Inc
文件頁數(shù): 3/20頁
文件大小: 0K
描述: IC TX/RX RS485 HS FD 3.3V 14SOIC
標(biāo)準(zhǔn)包裝: 56
類型: 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOICN
包裝: 管件
產(chǎn)品目錄頁面: 790 (CN2011-ZH PDF)
Data Sheet
ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
Rev. E | Page 11 of 20
TEST CIRCUITS
RL/2
VOC
A/Y
B/Z
VOD
05
52
4-
0
03
Figure 17. Differential Output Voltage
and Common-Mode Voltage Drivers
VCM =
–7V TO +12V
VCC
RL
375
VOD
D
05
52
4-
00
4
Figure 18. Differential Output Voltage Drivers
with Varying Common-Mode Voltage
055
24
-00
5
IOH
(–)
IOL
(+)
VOH
VOL
R
0
VID
Figure 19. CMOS Output Voltage High and
CMOS Output Voltage Low Receivers
D
GENERATOR1
VCC
50
CL
RL =
60
CL = 15pF2
05
52
4-
0
36
OUT
1PPR = 250kHz, 50% DUTY CYCLE,
tR ≤ 6.0ns, ZO =50.
2CL INCLUDES PROBE AND STRAY CAPACITANCE.
Figure 20. Driver Differential Output Delay and Transition Times
D
VOM
RL =27
OUT
CL =15pF2
GENERATOR1
VCC
50
S1
VOM =
VOH +VOL
2
≈ 1.5V
05
52
4-
03
7
1PPR = 250kHz, 50% DUTY CYCLE,
tR ≤ 6.0ns, ZO =50.
2CL INCLUDES PROBE AND STRAY CAPACITANCE.
Figure 21. Driver Propagation Delays
D
OUT
CL = 50pF2
GENERATOR1
50
S1
VOM =
VOH +VOL
2
≈ 1.5V
RL = 110
0V OR 3V
05
52
4-
03
8
1PPR = 250kHz, 50% DUTY CYCLE,
tR ≤ 6.0ns, ZO =50.
2CL INCLUDES PROBE AND STRAY CAPACITANCE.
Figure 22. Driver Enable and Disable Times (tPZH, tPSH, tPHZ)
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