參數(shù)資料
型號: SP487CT
英文描述: Quad RS-485/RS-422 Line Drivers
中文描述: 四RS-485/RS-422收發(fā)線驅(qū)動器
文件頁數(shù): 4/7頁
文件大?。?/td> 83K
代理商: SP487CT
SP486/487
Quad RS-485/RS-422 Line Drivers
4
Copyright 2000 Sipex Corporation
PINOUT — SP487
1
2
3
4
SP487
DI
1
DO
1
A
DO
1
B
EN
1
/EN
2
DO
2
B
DO
2
A
DI
2
GND
V
CC
DI
4
DO
4
A
DO
4
B
EN
3
/EN
4
DO
3
B
DO
3
A
DI
3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Pin 16 — Supply Voltage V
CC
— 4.75V
V
CC
5.25V.
SP487 PINOUT
Pin 1 — DI
— Driver 1 Input — If Driver 1 output is
enabled, logic 0 on DI
forces driver output DO
A low
and DO
B high. A logic 1 on DI
with Driver 1 output
enabled forces driver DO
1
A high and DO
1
B low.
Pin 2 — DO
1
A — Driver 1 output A.
Pin 3 — DO
1
B — Driver 1 output B.
Pin 4 — EN
/EN
— Driver 1 and 2 Output Enable.
Please refer to SP487 Truth Table (2).
Pin 5 — DO
2
B — Driver 2 output B.
Pin 6 — DO
2
A — Driver 2 output A.
Pin 7 — DI
— Driver 2 Input — If Driver 2 output is
enabled, logic 0 on DI
forces driver output DO
A low
and DO
B high. A logic 1 on DI
with Driver 2 output
enabled forces driver DO
2
A high and DO
2
B low.
Pin 8 — GND — Digital Ground.
Pin 9 — DI
— Driver 3 Input — If Driver 3 output is
enabled, logic 0 on DI
forces driver output DO
A low
and DO
B high. A logic 1 on DI
with Driver 3 output
enabled forces driver DO
3
A high and DO
3
B low.
Pin 10 — DO
3
A — Driver 3 output A.
INPUT
DI
ENABLES
EN
OUTPUTS
OUTA
EN
OUTB
H
H
X
H
L
L
H
X
L
H
H
X
L
H
L
L
X
L
L
H
X
L
H
Hi–Z
Hi–Z
Table 1. SP486 Truth Table
I
NPUT
DI
ENABLES
OUTPUTS
OUTA
EN1/EN2 or EN3/EN4
OUTB
H
H
H
L
L
H
L
H
X
L
Hi–Z
Hi–Z
Table 2. SP487 Truth Table
Pin 11 — DO
3
B — Driver 3 output B.
Pin 12 — EN
/EN
— Driver 3 and 4 Output Enable.
Please refer to SP487
Truth Table (2)
.
Pin 13 — DO
4
B — Driver 4 output B.
Pin 14 — DO
4
A — Driver 4 output A.
Pin 15 — DI
— Driver 4 Input — If Driver 4 output
is enabled, logic 0 on DI
forces driver output DO
A
low and DO
B high. A logic 1 on DI
with Driver 3
output enabled forces driver DO
4
A high and DO
4
B
low.
Pin 16 — Supply Voltage V
CC
— 4.75V
V
CC
5.25V.
FEATURES…
The
SP486
and
SP487
are low–power quad differ-
ential line drivers meeting RS-485 and RS-422
standards. The
SP486
features active high and
active low common driver enable controls; the
SP487
provides independent, active high driver
enable controls for each pair of drivers. The driver
outputs are short–circuit limited to 200mA. Data
rates up to 10Mbps are supported. Both are avail-
able in 16–pin plastic DIP and SOIC packages.
相關PDF資料
PDF描述
SP487ES Quad RS-485/RS-422 Line Drivers
SP487ET Quad RS-485/RS-422 Line Drivers
SP486 Quad RS-485/RS-422 Differential Line Drivers(四路RS-485/RS-422 差分線驅(qū)動器)
SP486CS Quad RS-485/RS-422 Line Drivers
SP486CT Quad RS-485/RS-422 Line Drivers
相關代理商/技術參數(shù)
參數(shù)描述
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