MAX3221EUE-T View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
MAX3221EUE-T
Maxim Integrated
'MAX3221EUE-T' PDF : 16 Pages View PDF
1µA Supply-Current, True +3V to +5.5V
RS-232 Transceivers with AutoShutdown
VCC
0.1µF
C1+
C1
C1-
C2+
C2
C2-
T_ IN
VCC
V+
MAX3221
V-
MAX3223
MAX3243
T_ OUT
R_ OUT
0V
EN (MAX3221/3)
R_ IN
5kΩ
VCC
FORCEOFF
GND
C3
C4
1000pF
Figure 8. Loopback Test Circuit
Table 3. Required Capacitor Values
VCC
(V)
3.0 to 3.6
4.5 to 5.5
3.0 to 5.5
C1
(µF)
0.1
0.047
0.1
C2, C3, C4
(µF)
0.1
0.33
0.47
Table 4. Logic Family Compatibility with
Various Supply Voltages
SYSTEM
POWER-
SUPPLY
VOLTAGE
(V)
3.3
5
5
VCC SUPPLY
VOLTAGE
(V)
COMPATIBILITY
3.3
Compatible with all CMOS
families.
5
Compatible with all TTL and
CMOS-logic families.
Compatible with ACT and
3.3
HCT CMOS, and with TTL.
Incompatible with AC, HC,
or CD4000 CMOS.
T1IN
T1OUT
R1OUT
5V/div
5V/div
5V/div
VCC = +3.3V, 120kbps
C1–C4 = 0.1µF
5µs/div
Figure 9. Loopback Test Result at 120kbps
T1IN
T1OUT
R1OUT
5V/div
5V/div
5V/div
VCC = +3.3V, 235kbps
C1–C4 = 0.1µF
2µs/div
Figure 10. Loopback Test Result at 235kbps
______________________________________________________________________________________ 11
Share Link: 