參數(shù)資料
型號: MAX3291ESD+T
廠商: Maxim Integrated Products
文件頁數(shù): 16/16頁
文件大小: 0K
描述: IC TXRX RS485/422 14-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: RS422,RS485
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 14-SOIC
包裝: 帶卷 (TR)
INPUTS
MAX3291/MAX3292
RS-485/RS-422 Transceivers with Preemphasis
for High-Speed, Long-Distance Communication
_______________________________________________________________________________________
9
R
B
RO
CL
ATE
A
VID
R
ZN
YP
ZP
YN
ZN
ZP
YP
YN
0 DIFFERENTIAL
tPRE
tPTND
80%
20%
50%
Figure 9. Receiver Propagation Delay Test Circuit
Figure 10. Preemphasis Timing
RE
DI
DE
1k
VCC
RO
MAX3291
MAX3292
Figure 11. Time-to-Shutdown Test Circuit
Function Tables
DI
RE
DE
1
X
1
INPUTS
Z
0
OUTPUTS
Y
1
TRANSMITTING
1
0
X
1
High-Z
High-Z and
SHUTDOWN
X
1
0
X
0
A-B
RE
DE
OUTPUT
RO
1
0
≤ -0.2V
0
X
1
High-Z and
SHUTDOWN
X
1
0
Open
0
X
≥ 0.2V
0
X
X = Don’t care
Z = High impedance
SHUTDOWN = Low-power shutdown; driver and receiver outputs are high impedance.
INPUTS
RECEIVING
High-Z
X
1
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