參數(shù)資料
型號: MAX1480ACPI
廠商: Maxim Integrated Products
文件頁數(shù): 7/21頁
文件大小: 0K
描述: IC TXRX RS485/422 250KBPS 28-DIP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 14
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: 4.5 V ~ 5.5 V
安裝類型: 通孔
封裝/外殼: 28-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 28-PDIP
包裝: 管件
MAX1480A/B/C,
MAX1490A/B
Complete, Isolated RS-485/RS-422
Data Interface
______________________________________________________________________________________
15
Figure 6. Driver Timing Test Load
OUTPUT
UNDER TEST
500
Ω
S1
S2
ISO VCC_
CL
Figure 7. Driver Propagation Delays and Transition Times
DI
0V
B
A
VO
0V
-VO
VO
tPLH
1/2 VO
10%
tR
90%
tPHL
1/2 VO
10%
tF
VDIFF = V (A) - V (B)
VDIFF
VCC_ - 0.4V
2
tSKEW =
tPLH - tPHL
VCC_ - 0.4V
2
Figure 8. Driver Enable and Disable Times
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
0V
A, B
VOL
A, B
0V
VOL + 0.5V
VCC_ - 0.4V
2
VCC_ - 0.4V
2
VCC_ -0.4V
VOH - 0.5V
2.3V
tZL
tLZ
tZH
tHZ
DE
Figure 9. Times to/from Shutdown
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
2.4V
0.8V
A, B
VOL
A, B
0V
1.6V
VOL + 0.5V
VOH - 0.5V
2.3V
tZL(SHDN)
tSHDN
tZH(SHDN)
tSHDN
SD
Figure 10. Receiver Propagation Delays
VOH
VOL
-VID
VID
1.5V
0V
1.5V
MAX1480A/B/C
OUTPUT
MAX1490A/B
OUTPUT
INPUT
0V
RO
RO VOH
VOL
VA - VB
tPHL
tPLH
tPHL
tSKEW =
tPLH - tPHL
Switching Waveforms
____________________________________________________Test Circuits (continued)
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