SP339EER1-0A Datasheet, PDF (3/23 Pages) Exar Corporation – RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION

SP339E
REV. 1.0.4
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
PIN DESCRIPTIONS BY MODE (MODE1, MODE0)
Pin
Name
00, Figure 1
01, Figure 2
10, Figure 3
11, Figure 4
1
L1
R1 Output
1
1
2
L2
R2 Output
R1 Output
R1 Output
3
L3
T1 Input
T1 Input
T1 Input
4
L4
T2 Input
5
L6
R3 Output
1
1
6
L7
T3 Input
7
L8
R4 Output
1
1
8
L9
9
VCC
10
GND
11
SLEW
12
DIR1
13
N/C
R5 Output
1
1
V_CC
Ground
SLEW = V_CC enables 250kbps slew limiting
T1 Enable,
R1 Disable
T1 Enable
This pin is not used and is not connected internally
14
MODE0
0
1
0
1
15
MODE1
0
0
1
1
16
N/C
This pin is not used and is not connected internally
17
TERM
Enables RS-485/422 receiver termination
18
N/C
This pin is not used and is not connected internally
19
ENABLE
20
VCC
ENABLE = V_CC for operation, ENABLE = 0V for shutdown
V_CC
3