MAX3243
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH
±15-kV
ESD (HBM) PROTECTION
SLLS350E – APRIL 1999 – REVISED OCTOBER 2000
EACH RECEIVER
INPUTS
RIN2
L
H
L
L
H
H
Open
RIN1,
RIN3–RIN5
X
X
L
H
L
H
Open
FORCEOFF
L
L
H
H
H
H
H
VALID RIN
RS-232 LEVEL
X
X
Yes
Yes
Yes
Yes
No
OUTPUTS
ROUT2B
L
H
L
L
H
H
L
ROUT
Z
Z
H
L
H
L
H
Normal o eration with
operation
auto-powerdown
disabled/enabled
di bl d/
bl d
RECEIVER STATUS
Powered off while
ROUT2B is active
H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected
driver off
logic diagram (positive logic)
DIN1
14
9
DOUT1
DIN2
13
10
DOUT2
DIN3
12
11
DOUT3
FORCEOFF
FORCEON
22
23
Auto-powerdown
21
INVALID
ROUT1
ROUT2B
19
20
4
RIN1
ROUT2
18
5
RIN2
ROUT3
17
6
RIN3
ROUT4
16
7
RIN4
ROUT5
15
8
RIN5
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
