Datasheet
±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,
Up to 1Mbps, True RS-232 Transceivers
Pin Description (continued)
PIN
MAX3222E MAX3232E MAX3241E
TQFN
SO/
DIP
TSSOP/
SSOP
TQFN
SO/DIP/
SSOP/
16-PIN
TSSOP
20-PIN
TSSOP
MAX3237E
SSOP/
SO/
TSSOP
TQFN
MAX3246E
NAME FUNCTION
16 16 18 13 15 18 2 25 24
F5 GND Ground
17 17 19 14 16 19 26 26 26 F2
V
CC
+3.0V to +5.5V Supply
Voltage
18 18 20 — — — 14* 22 21 B2
SHDN
Shutdown Control. Active
low.
9, 12 — 11, 14 — —
1, 10,
11, 20
——
9, 16,
25,
32
C3, D3, B4,
C4, D4, E4,
B5, C5, D5,
E5
N.C.
No Connection. For
MAX3246E, these
locations are not
populated with solder
bumps.
— — — — — — 15* — — — MBAUD
MegaBaud Control Input.
Connect to GND for
normal operation; connect
to V
CC
for 1Mbps
transmission rates.
—— — — — — 16
20,
21
19, 20 — R_OUTB
Noninverting
Complementary Receiver
Outputs. Always active.
—— — — — — — —— — EP
Exposed Pad. Solder the
exposed pad to the
ground plane or leave
unconnected (for TQFN
only).
8
Maxim Integrated
MAX3222E/MAX3232E/MAX3237E/
MAX3241E/MAX3246E