1ꢀ5k EꢁDꢂ-rotected, Down to 10nA, 3.0k to ꢀ.ꢀk,
Up to 1Mbps, True Rꢁꢂ232 Transceivers
Table 3. Logic-Family Compatibility with
Various Supply Voltages
5V/div
5V/div
5V/div
T1IN
SYSTEM
POWER-SUPPLY
VOLTAGE
(V)
V
CC
SUPPLY
VOLTAGE
(V)
COMPATIBILITY
T1OUT
R1OUT
Compatible with all
CMOS families
3.3
5
3.3
5
Compatible with all
TTL and CMOS fami-
lies
V
= 3.3V
CC
C1–C4 = 0.1 F
2 s/div
Compatible with ACT
and HCT CMOS, and
with AC, HC, or
5
3.3
Figure 8. MAX3241E Loopback Test Result at 120kbps
CD4000 CMOS
5V/div
T1IN
T1OUT
R1OUT
V
CC
0.1 F
V
5V/div
5V/div
CC
C1+
V+
C3
C1
C1-
C2+
MAX3222E
MAX3232E
MAX3237E
MAX3241E
V-
V
= 3.3V, C1–C4 = 0.1 F
CC
C4
C2
C2-
2 s/div
T_ OUT
T_ IN
Figure 9. MAX3241E Loopback Test Result at 250kbps
R_ IN
5k
R_ OUT
1000pF
+5V
T_IN
0
+5V
GND
0
-5V
+5V
0
T_OUT
5k + 250pF
V
= 3.3V
CC
C1–C4 = 0.1 F
Figure 7. Loopback Test Circuit
R_OUT
400ns/div
Figure 10. MAX3237E Loopback Test Result at 1000kbps
(MBAUD = V
)
CC
______________________________________________________________________________________ 13
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
