V
參數(shù)資料
型號(hào)： ADM3485ARZ-REEL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 16/20頁(yè)
文件大小： 0K
描述： IC TXRX RS485/422 HS 3.3V 8-SOIC
標(biāo)準(zhǔn)包裝： 1,000
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： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SO
包裝： 帶卷 (TR)
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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