參數(shù)資料
型號: MAX3157CAI-T
廠商: Maxim Integrated Products
文件頁數(shù): 11/13頁
文件大?。?/td> 0K
描述: IC TXRX RS485/422 250KBPS 28SSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,000
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: 28-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 28-SSOP
包裝: 帶卷 (TR)
MAX3157
High CMRR RS-485 Transceiver
with ±50V Isolation
_______________________________________________________________________________________
7
DE
5V/div
VY
10V/div
100
s/div
0
+50V
POWER-UP DELAY
(VISOCOM = +50V)
MAX3157toc19
0
20
10
40
30
50
60
0.1
1
10
MAXIMUM COMMON-MODE PEAK VOLTAGE TO
GROUND vs. COMMON-MODE FREQUENCY
MAX3157
toc20
COMMON-MODE FREQUENCY (kHz)
COMMON-MODE
PEAK
VOLTAGE
TO
GROUND
(V)
MAXIMUM COMMON PEAK
VOLTAGE TO ISOCOM
COMMON-MODE VOLTAGE TO
ISOCOM = 7V PEAK
Typical Operating Characteristics (continued)
(VCC = +5V, YR = ZR = AR = BR = ISOCOM, C1 = C2 = 0.047F, C3 = 1F, C4 = 10nF, TA = +25°C, unless otherwise noted.)
Test Circuits and Timing Diagrams
R
Y
Z
VOD
VOC
Figure 1. Driver DC Test Load
DI
DE
3V
Y
Z
CL1
CL2
RDIFF
VID
Figure 3. Driver Timing Test Circuit
RECEIVER
OUTPUT
TEST POINT
1k
1k
S1
S2
VCC
CL
100pF
OUTPUT
UNDER TEST
500
S1
S2
VCC
CL
Figure 2. Receiver Enable/Disable Timing Test Load
Figure 4. Driver Enable/Disable Timing Test Load
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