SP339E(2011) 데이터 시트보기 (PDF) - Exar Corporation
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SP339E Datasheet PDF : 21 Pages
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SP339E
REV. 1.0.0
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
VCC
Ground
SLEW = VCC enables 250kbps slew limiting
T1 Enable,
R1 Disable
T1 Enable
This pin is not used and is disconnected internally
14
MODE0
0
1
0
1
15
MODE1
0
0
1
1
16
N/C
This pin is not used and is disconnected internally
17
TERM
Enables RS-485/422 receiver termination
18
N/C
This pin is not used and is disconnected internally
19
ENABLE
20
VCC
ENABLE = VCC for operation, ENABLE = 0V for shutdown
VCC
3
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