參數(shù)資料
型號: MAX3440EASA+T
廠商: Maxim Integrated Products
文件頁數(shù): 3/19頁
文件大?。?/td> 0K
描述: IC TXRX RS-485 8-SOIC
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: RS485
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
MAX3440E–MAX3444E
±15kV ESD-Protected, ±60V Fault-Protected,
10Mbps, Fail-Safe RS-485/J1708 Transceivers
______________________________________________________________________________________
11
Function Tables
INPUTS
OUTPUTS
A-B
VID DIFFERENTIAL
INPUT VOLTAGE
COMMON-MODE
VOLTAGE
RO
FAULT
CONDITIONED
BY DELAY
FAULT CONDITION
≥0.45V
1
0
Normal operation
<0.45V and
≥0.27V
1
Indeterminate
<0.27V and
≥-0.05V
1
Low-input differential voltage
≤-0.05V and ≥-0.2V
Indeterminate
(Note 1)
1
Low-input differential voltage
≤-0.2V and >-0.27V
0
1
Low-input differential voltage
≤-0.27V and >-0.45V
0
Indeterminate
≤-0.45V
≤12V and ≥-7V
00
Indeterminate
X
<-7V or >+12V
Indeterminate
1
Outside common-mode voltage range
Table 1. MAX3440E/MAX3441E Fault Table
X = Don’t care.
Note 1: Receiver output may oscillate with this differential input condition.
TRANSMITTING
INPUTS
OUTPUTS
DE/RE
DI
A
B
0
X
High-Z
10
01
11
10
Table 2. MAX3440E/MAX3441E
(RS-485/RS-422)
X = Don’t care.
TRANSMITTING
INPUTS
OUTPUTS
RE
DE
DI
A
B
0
X
High-Z
01
001
01
110
1
0
X
Shutdown
11
001
11
110
Table 3. MAX3442E/MAX3443E
(RS-485/RS-422)
X = Don’t care.
TRANSMITTING
INPUTS
OUTPUTS
CONDITIONS
TXD
DE
AB
0
1
High-Z
1
High-Z
0
1
Dominant state
1
0
High-Z
Recessive state
Table 4. MAX3444E (J1708) Application
RECEIVING
INPUTS
OUTPUTS
DE/RE
(A - B)
RO
0
≥-0.05V
1
0
≤-0.2V
0
Open/shorted
1
X
High-Z
Table 5. MAX3440E/MAX3441E
(RS-485/RS-422)
X = Don’t care.
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