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SN75C3221 Datasheet(PDF) 2 Page - Texas Instruments

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Part # SN75C3221
Description  3-V TO 5.5-V SINGLE CHANNEL RS-232 COMPATIBLE LINE DRIVER/RECEIVER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN75C3221 Datasheet(HTML) 2 Page - Texas Instruments

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SN65C3221, SN75C3221
3V TO 5.5V SINGLECHANNEL RS232 COMPATIBLE LINE DRIVER/RECEIVER
SLLS351E − APRIL 2002 − REVISED OCTOBER 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Function Tables
EACH DRIVER
INPUTS
OUTPUT
DIN
FORCEON
FORCEOFF
VALID RIN
RS-232 LEVEL
OUTPUT
DOUT
DRIVER STATUS
X
X
L
X
Z
Powered off
L
H
H
X
H
Normal operation with
H
HH
X
L
Normal operation with
auto-powerdown disabled
L
L
H
Yes
H
Normal operation with
H
LH
Yes
L
Normal operation with
auto-powerdown enabled
L
L
H
No
Z
Powered off by
H
L
H
No
Z
Powered off by
auto-powerdown feature
H = high level, L = low level, X = irrelevant, Z = high impedance
EACH RECEIVER
INPUTS
OUTPUT
RIN
EN
VALID RIN
RS-232 LEVEL
OUTPUT
ROUT
L
L
X
H
H
LX
L
X
HX
Z
Open
L
No
H
H = high level, L = low level, X = irrelevant,
Z = high impedance (off), Open = disconnected
input or connected driver off
logic diagram (positive logic)
DIN
DOUT
Auto-powerdown
INVALID
RIN
FORCEOFF
FORCEON
ROUT
EN
11
16
9
13
10
8
1
12


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