MAX3221E
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER
WITH 15-kV IEC ESD PROTECTION
www.ti.com
SLLS686A–OCTOBER 2005–REVISED MAY 2006
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
MAX3221ECDB
TOP-SIDE MARKING
Tube of 80
SSOP – DB
TSSOP – PW
SSOP – DB
TSSOP – PW
MP221EC
Reel of 2000
Tube of 90
MAX3221ECDBR
MAX3221ECPW
–0°C to 70°C
MP221EC
MP221EI
MP221EI
Reel of 2000
Tube of 80
MAX3221ECPWR
MAX3221EIDB
Reel of 2000
Tube of 90
MAX3221EIDBR
–40°C to 85°C
MAX3221EIPW
Reel of 2000
MAX3221EIPWR
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
FUNCTION TABLES
ABC
EACH DRIVER(1)
INPUTS
OUTPUT
DOUT
DRIVER STATUS
VALID RIN
RS-232 LEVEL
DIN
FORCEON
FORCEOFF
X
L
X
H
H
L
L
X
X
Z
H
L
Powered off
H
H
H
H
H
H
Normal operation with
auto-powerdown disabled
H
L
X
Yes
Yes
No
No
H
L
Normal operation with
auto-powerdown enabled
H
L
L
L
Z
Z
Powered off by
auto-powerdown feature
H
L
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
EACH RECEIVER(1)
INPUTS
OUTPUT
ROUT
VALID RIN
RS-232 LEVEL
RIN
EN
L
H
L
L
X
X
H
L
X
H
L
X
Z
H
Open
No
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
(off), Open = disconnected input or connected driver off
2
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