參數(shù)資料
型號(hào): MAX3157CAI-T
廠商: Maxim Integrated Products
文件頁數(shù): 12/13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(biāo)準(zhǔn)包裝: 2,000
類型: 收發(fā)器
驅(qū)動(dòng)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
8
_______________________________________________________________________________________
DI
3V
0
Z
Y
VO
0
-VO
VO
1.5V
tDPLH
1/2 VO
10%
tDR
90%
tDPHL
1.5V
1/2 VO
10%
tDF
VDIFF = V (Y) - V (Z)
VDIFF
tDSKEW = | tDPLH - tDPHL |
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0
Y, Z
VOL
Y, Z
0
1.5V
VOL + 0.5V
VOH - 0.5V
2.3V
tDZL(SHDN), tDZL
tDLZ
tDZH(SHDN), tDZH
tDHZ
DE
Figure 5. Driver Propagation Delays
Figure 6. Driver Enable and Disable Times
VOH
VOL
A
B
1V
-1V
1.5V
OUTPUT
INPUT
RO
tRPLH
tRPHL
tRSKEW = | tRPLH - tRPHL |
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0
VCC
RO
0
1.5V
VOL + 0.5V
VOH - 0.5V
1.5V
tRZL(SHDN), tRZL
tRLZ
tRZH(SHDN), tRZH
tRHZ
RE
Figure 7. Receiver Propagation Delays
Figure 8. Receiver Enable and Disable Times
R
B
RECEIVER
OUTPUT
ATE
A
VID
R
Figure 9. Receiver Propagation Delay Test Circuit
Test Circuits and Timing Diagrams (continued)
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