參數(shù)資料
型號: ST485X
英文描述: IC MAX 7000 CPLD 128 100-TQFP
中文描述: 低功耗RS-485/RS-422收發(fā)器
文件頁數(shù): 5/12頁
文件大小: 92K
代理商: ST485X
ST485
2/12
PIN CONFIGURATION
PIN DESCRIPTION
TRUTH TABLE (DRIVER)
X= Don’t Care; Z=High Impedance
TRUTH TABLE (RECEIVER)
X= Don’t Care; Z=High Impedance
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
PlN N
°
SYMBOL
NAME AND FUNCTION
1
RO
Receiver Output
2
RE
Receiver Output Enable
3
DE
Driver Output Enable
4
DI
Driver Input
5
GND
Ground
6
A
Non-inverting Receiver Input and Non-inverting Driver Output
7
B
Inverting Receiver Input and Inverting Driver Output
8
VCC
Supply Voltage
INPUTS
OUTPUTS
RE
DE
DI
B
A
XH
H
L
H
XH
L
H
L
XL
X
Z
INPUTS
OUTPUT
RE
DE
A-B
RO
LL
≥ +0.2V
H
LL
≤ -0.2V
L
INPUTS OPEN
H
HL
X
Z
Symbol
Parameter
Value
Unit
VCC
Supply Voltage
12
V
VI
Control Input Voltage (RE, DE)
-0.5 to (VCC + 0.5)
V
VDI
Driver Input Voltage (DI)
-0.5 to (VCC + 0.5)
V
VDO
Driver Output Voltage (A, B)
± 12.5
V
VRI
Receiver Input Voltage (A, B)
± 12.5
V
VRO
Receiver Output Voltage (RO)
-0.5 to (VCC + 0.5)
V
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