V
參數(shù)資料
型號(hào): ADM3491ARZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 16/20頁(yè)
文件大?。?/td> 0K
描述: IC TX/RX RS485 HS FD 3.3V 14SOIC
標(biāo)準(zhǔn)包裝: 56
類(lèi)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(lèi)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(yè)面: 790 (CN2011-ZH PDF)
Data Sheet
ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
Rev. E | Page 5 of 20
TIMING SPECIFICATIONS—ADM3485/ADM3490/ADM3491
VCC = 3.3 V, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Differential Output Delay (tDD)
1
22
35
ns
RL = 60 Ω
Differential Output Transition Time (tTD)
3
8
25
ns
RL = 60 Ω
Propagation Delay, Low-to-High Level (tPLH)
7
22
35
ns
RL = 27 Ω
Propagation Delay, High-to-Low Level (tPHL)
7
22
35
ns
RL = 27 Ω
|tPLH – tPHL| Propagation Delay Skew1 (tPDS)
8
ns
RL = 27 Ω
DRIVER OUTPUT ENABLE/DISABLE TIMES (ADM3485/
ADM3491 ONLY)
Output Enable Time to Low Level (tPZL)
45
90
ns
RL = 110 Ω
Output Enable Time to High Level (tPZH)
45
90
ns
RL = 110 Ω
Output Disable Time from High Level (tPHZ)
40
80
ns
RL = 110 Ω
Output Disable Time from Low Level (tPLZ)
40
80
ns
RL = 110 Ω
Output Enable Time from Shutdown to Low Level (tPSL)
650
900
ns
RL = 110 Ω
Output Enable Time from Shutdown to High Level (tPSH)
650
900
ns
RL = 110 Ω
1 Measured on |tPLH (Y) tPHL (Y)| and |tPLH (Z) tPHL (Z)|.
TIMING SPECIFICATIONS—ADM3483/ADM3488
VCC = 3.3 V, TA = 25°C, unless otherwise noted.
Table 4.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Differential Output Delay (tDD)
600
900
1400
ns
RL = 60 Ω
Differential Output Transition Time (tTD)
400
700
1200
ns
RL = 60 Ω
Propagation Delay, Low-to-High Level (tPLH)
700
1000
1500
ns
RL = 27 Ω
Propagation Delay, High-to-Low Level (tPHL)
700
1000
1500
ns
RL = 27 Ω
|tPLH – tPHL| Propagation Delay Skew1 (tPDS)
100
ns
RL = 27 Ω
DRIVER OUTPUT ENABLE/DISABLE TIMES (ADM3483 ONLY)
Output Enable Time to Low Level (tPZL)
900
1300
ns
RL = 110 Ω
Output Enable Time to High Level (tPZH)
600
800
ns
RL = 110 Ω
Output Disable Time from High Level (tPHZ)
50
80
ns
RL = 110 Ω
Output Disable Time from Low Level (tPLZ)
50
80
ns
RL = 110 Ω
Output Enable Time from Shutdown to Low Level (tPSL)
1.9
2.7
μs
RL = 110 Ω
Output Enable Time from Shutdown to High Level (tPSH)
2.2
3.0
μs
RL = 110 Ω
1 Measured on |tPLH (Y) tPHL (Y)| and |tPLH (Z) tPHL (Z)|.
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