參數(shù)資料
型號: MAX13448EESD+T
廠商: Maxim Integrated Products
文件頁數(shù): 13/14頁
文件大小: 0K
描述: IC TXRX RS485 FULL DUPLEX 14SOIC
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
類型: 收發(fā)器
驅動器/接收器數(shù): 1/1
規(guī)程: RS485
電源電壓: 3 V ~ 5.5 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)
MAX13448E
±80V Fault-Protected Full-Duplex
RS-485 Transceiver
8
_______________________________________________________________________________________
Y
Z
VOD
VOC
RL/2
Figure 1. Driver DC Test Load
DI
DE
VCC
Z
Y
VO
RL
CL
Figure 2. Driver Timing Test Circuit
DI
VCC
0
Z
Y
VO
0
-VO
VO
VCC/2
tDPLH
tDPHL
1/2 VO
10%
tLH
90%
1/2 VO
10%
tHL
VOD = V (Y) - V (Z)
VOD
tSKEW = |tDPLH - tDPHL|
Figure 3. Driver Propagation Delays
Pin Description
PIN
NAME
FUNCTION
1, 8, 13
N.C.
No Connection. Not internally connected. Connect N.C. to GND or leave it unconnected.
2
RO
Receiver Output. If receiver is enabled and (A - B)
≥ -50mV, RO = high; if (A - B) ≥ -200mV, RO = low.
3
RE
Receiver Output Enable. Drive
RE low to enable RO; RO is high impedance when RE is high. Drive
RE high and DE low to enter low-power shutdown mode.
4DE
Driver Output Enable. Drive DE high to enable the driver outputs. Drive DE low to put the outputs in
high impedance. Drive
RE high and DE low to enter low-power shutdown mode.
5DI
Driver Input. Drive DI low to force the noninverting output low and the inverting output high. Drive DI
high to force the noninverting output high and the inverting output low.
6, 7
GND
Ground
9
Y
Noninverting Driver Output
10
Z
Inverting Driver Output
11
B
Inverting Receiver Input
12
A
Noninverting Receiver Input
14
VCC
Positive Supply. VCC = +3.0V to +5.5V. Bypass VCC to GND with a 1F ceramic capacitor as close
to VCC as possible. Typical VCC values are at VCC = +3.3V and VCC = +5.0V.
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