参数资料
型号: MAX481CUA+T
厂商: Maxim Integrated Products
文件页数: 2/17页
文件大小: 0K
描述: IC TXRX RS485/RS422 5V 8-MSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 收发器
驱动器/接收器数: 1/1
规程: RS422,RS485
电源电压: 4.75 V ~ 5.25 V
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-uMAX
包装: 带卷 (TR)
Low-Power, Slew-Rate-Limited
RS-485/RS-422 Transceivers
_______________________________________________________Switching Waveforms
DI
3V
0V
Z
Y
VO
0V
-VO
VO
1.5V
tPLH
1/2 VO
10%
tR
90%
tPHL
1.5V
1/2 VO
10%
tF
VDIFF = V (Y) - V (Z)
VDIFF
tSKEW = | tPLH - tPHL |
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
Y, Z
VOL
Y, Z
0V
1.5V
VOL + 0.5V
VOH - 0.5V
2.3V
tZL(SHDN), tZL
tLZ
tZH(SHDN), tZH
tHZ
DE
VOH
VOL
VID
-VID
1.5V
0V
1.5V
OUTPUT
INPUT
0V
RO
A-B
tPLH
tPHL
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
VCC
RO
0V
1.5V
VOL + 0.5V
VOH - 0.5V
1.5V
tZL(SHDN), tZL
tLZ
tZH(SHDN), tZH
tHZ
RE
_________________Function Tables
(MAX481/MAX483/MAX485/MAX487/MAX1487)
Figure 8. Driver Propagation Delays
Figure 9. Driver Enable and Disable Times (except MAX488 and
MAX490)
Figure 10. Receiver Propagation Delays
Figure 11. Receiver Enable and Disable Times (except MAX488
and MAX490)
Table 1. Transmitting
Table 2. Receiving
INPUTS
OUTPUT
RE
DE
A-B
RO
0
1
0
> +0.2V
< -0.2V
Inputs open
X
1
0
1
High-Z
*
INPUTS
OUTPUTS
RE
DE
DI
Z
Y
X
0
1
0
1
0
X
0
1
High-Z
*
1
0
High-Z
*
X = Don’t care
High-Z = High impedance
*
Shutdown mode for MAX481/MAX483/MAX487
X = Don’t care
High-Z = High impedance
*
Shutdown mode for MAX481/MAX483/MAX487
MAX481/MAX483/MAX485/
MAX487–MAX491/MAX1487
10
Maxim Integrated
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