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參數(shù)資料
| 型號： | SP304CS |
| 元件分類： | RS-232 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | 5V的高速RS - 232收發(fā)器與0.1uF電容 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 143K |
| 代理商： | SP304CS |
Corporation
SIGNAL PROCESSING EXCELLENCE
80
PIN ASSIGNMENTS
S
V
DD
(+12V) 1
RIA
2
2
RIA
1
3
TOA
2
4
TOA
1
5
SELECT A 6
SELECT B 7
TOB
1
8
TOB
2
9
RIB
1
10
RIB
2
11
GND 12
24 V
CC
(+5V)
23 ROA
2
22 ROA
1
21 TIA
2
20 TIA
1
19 LB
18 N.C.
17 TIB
1
16 TIB
2
15 ROB
1
14 ROB
2
13 V
EE
(-12V)
S
V
DD
(+12V) 1
RIA
2
2
RIA
1
3
N.C. 4
TOA
2
5
TOA
1
6
SELECT A 7
SELECT B 8
TOB
1
9
TOB
2
10
N.C. 11
RIB
1
12
RIB
2
13
GND 14
28 V
CC
(+5V)
27 ROA
2
26 ROA
1
25 N.C.
24 TIA
2
23 TIA
1
22 LB
21 N.C.
20 TIB
1
19 TIB
2
18 N.C.
17 ROB
1
16 ROB
2
15 V
EE
(-12V)
might result from low amplitude noise voltages
during slower-speed signal transitions.
A loopback test mode is provided that puts the
driver outputs to a high impedance tri-state
level, and routes the driver outputs to their
associated receiver inputs. In this configuration,
the signal path is non-inverting from the TTL
driver input to the receiver TTL output. This
operating mode allows the controlling system to
perform diagnostic self-test of the RS-232/
RS-422 driver/receiver circuitry at speeds up to
3,000 bits per second. In the loopback mode a
±
13.2V input range may be applied to the re-
ceiver inputs with no interference to the loopback
test. In addition, the driver outputs are in a true
high–impedance state during loopback.
The
SP304
is available in 24-pin single width
(0.300") plastic DIP and 28-pin SOIC packages,
for operation over the commercial and indus-
trial temperature ranges.
FEATURES…
The
SP304
is a proprietary single-chip device
that contain both RS-232 and RS-422 protocol
line drivers and receivers. It is pin–for–pin com-
patible with the
Sipex SP302
. Like the
SP302
,
its configuration may be changed at any time by
logic levels on two control lines. In any configu-
ration, the
SP304
fully meets the requirements
of both the EIA RS-232D and RS-422 data
communication standards. The
SP304
enhance-
ments include improved isolation from external
signals and a true high–impedance driver output
in the loopback test mode, and no power up
sequence requirements.
The RS-232 line driver circuits convert TTL
logic level inputs into inverted RS-232 output
signals. The RS-422 line drivers convert TTL
logic levels into RS-422 differential output sig-
nals. The RS-422 line driver outputs feature
high source and sink current capability. All line
drivers are internally protected against short
circuits on their outputs.
The RS-232 receivers convert the EIA RS-232
input signals to inverted TTL output logic lev-
els. The RS-422 receivers convert the EIA RS-
422 differential input signals into non-inverted
TTL output logic levels. Receiver input filtering
provides excellent high frequency noise immu-
nity. Input pulses with widths less than 1
μ
s are
completely ignored. The RS-232 receivers have
the additional feature of voltage hysteresis, which
helps eliminate spurious output transitions that
USING THE SP304
POWER SUPPLIES
The
SP304
requires
±
12V and +5V for full
RS-232 and RS-422 operation. The
±
12V sup-
plies set up the RS-232
±
9V voltage swings, and
the +5V is used for the internal logic that for-
mats the communications mode and controls the
loopback function. The supply voltages can be
decreased to as low as
±
7V for V
DD
and V
EE
, and
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP304CT | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP304ES | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP304ET | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP3075EEN | 15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers |
| SP3070-3078E | 15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP304CT | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:RS-232/RS-422 Line Drivers/Receivers |
| SP304ES | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:RS-232/RS-422 Line Drivers/Receivers |
| SP304ET | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:RS-232/RS-422 Line Drivers/Receivers |
| SP3050 | 制造商:LITTELFUSE 制造商全稱:Littelfuse 功能描述:Low Capacitance Diode Array for ESD and Surge Protection |
| SP3050_11 | 制造商:LITTELFUSE 制造商全稱:Littelfuse 功能描述:TVS Diode Arrays |
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