參數(shù)資料
型號: MAX3221
廠商: Maxim Integrated Products, Inc.
英文描述: 1μA Supply-Current, True +3V to +5.5V RS-232 Transceivers with AutoShutdown(3V~5.5V,自動關(guān)閉方式接收器有效,120kbps,RS-232收發(fā)器)
中文描述: 1µA電源電流、+3V至+5.5V、真RS-232收發(fā)器,帶有AutoShutdown
文件頁數(shù): 11/16頁
文件大?。?/td> 203K
代理商: MAX3221
M
1μA S upply Current, True +3V to +5.5V RS -232
Transc eivers with AutoS hutdown
______________________________________________________________________________________
11
Figure 10. Loopback Test Result at 235kbps
T1IN
R1OUT
V
CC
= 3.3V, 235kbps
C1–C4 = 0.1
μ
F
T1OUT
5V/div
5V/div
2
μ
s/div
5V/div
MAX3221
MAX3223
MAX3243
5k
R_ IN
R_ OUT
EN (MAX3221/3)
C2-
C2+
C1-
C1+
V-
V+
V
CC
C4
C3
C1
C2
0.1
μ
F
V
CC
FORCEOFF
T_ OUT
T_ IN
GND
V
CC
0V
1000pF
Figure 8. Loopback Test Circuit
Figure 9. Loopback Test Result at 120kbps
T1IN
R1OUT
V
CC
= 3.3V, 120kbps
C1–C4 = 0.1
μ
F
T1OUT
5V/div
5V/div
5V/div
5
μ
s/div
Table 4. Logic Family Compatibility with
Various Supply Voltages
Table 3. Required Capacitor Values
V
CC
SUPPLY
VOLTAGE
(V)
COMPATIBILITY
3.3
3.3
Compatible with all CMOS
families.
5
5
Compatible with all TTL and
CMOS-logic families.
SYSTEM
POWER-
SUPPLY
VOLTAGE
(V)
5
3.3
Compatible with ACT and
HCT CMOS, and with TTL.
Incompatible with AC, HC,
or CD4000 CMOS.
V
CC
(V)
C1
(μF)
C2, C3, C4
(μF)
3.0 to 3.6
0.1
0.1
4.5 to 5.5
0.047
0.33
3.0 to 5.5
0.1
0.47
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