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PDF 8339 Data sheet ( Hoja de datos )
| Número de pieza | 8339 | |
| Descripción | 15KV ESD PROTECTED/ LOW POWER RS-485/RS-422 TRANSCEIVER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 8339 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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ST485E
±15KV ESD PROTECTED, LOW POWER
RS-485/RS-422 TRANSCEIVER
s LOW QUIESCENT CURRENT: 300µA
s DESIGNED FOR RS-485 INTERFACE
APPLICATIONS
s -7V TO 12V COMMON MODE INPUT
VOLTAGE RANGE
s DRIVER MAINTAINS HIGH IMPEDANCE IN
3-STATE OR WITH THE POWER OFF
s 70mV TYPICAL INPUT HYSTERESIS
s 30ns PROPAGATION DELAYS, 5ns SKEW
s OPERATE FROM A SINGLE 5V SUPPLY
s CURRENT LIMITING AND THERMAL
SHUTDOWN FOR DRIVER OVERLOAD
PROTECTION
s ESD PROTECTION:
±15KV (H.B.M.)
±8KV (IEC-1000-4-2 CONTACT
DISCHARGE)
s ALLOWS UP TO 64 TRANSCEIVERS ON
THE BUS
DESCRIPTION
The ST485E is al low power transceiver for
RS-485 and RS-422 communication. Each driver
output and receiver input is protected against
±15KV electrostatic discharge (H.B.M.) (ESD)
shocks, without latcup. These parts contain one
DIP SOP
driver and one receiver in half duplex
configuration.
This transceiver draw 300µA (typ.) of supply
current when unloaded or fully loaded with
disabled drivers.
It operates from a single 5V supply.
Driver is short-circuit current limited and is
protected against excessive power dissipation by
thermal shutdown circuitry that place the driver
outputs into a high-impedance state.
The ST485E is designed for bi-directional data
communications on multipoint bus transmission
line (half-duplex applications).
ORDERING CODES
Type
ST485ECN
ST485EBN
ST485EXN
ST485ECD
ST485EBD
ST485EXD
ST485ECDR
ST485EBDR
ST485EXDR
Temperature
Range
0 to 70 °C
-40 to 85 °C
-55 to 125 °C
0 to 70 °C
-40 to 85 °C
-55 to 125 °C
0 to 70 °C
-40 to 85 °C
-55 to 125 °C
Package
DIP-8
DIP-8
DIP-8
SO-8 (Tube)
SO-8 (Tube)
SO-8 (Tube)
SO-8 (Tape & Reel)
SO-8 (Tape & Reel)
SO-8 (Tape & Reel)
Comments
50parts per tube / 40tube per box
50parts per tube / 40tube per box
50parts per tube / 40tube per box
100parts per tube / 20tube per box
100parts per tube / 20tube per box
100parts per tube / 20tube per box
2500 parts per reel
2500 parts per reel
2500 parts per reel
September 2003
1/13
1 page  
ST485E
TEST CIRCUITS AND TYPICAL CHARACTERISTICS
Figure 1 : Driver DC Test Load
Figure 3 : Drive/Receiver Timing Test Circuit
Figure 2 : Receiver Timing Test Load
Figure 4 : Driver Timing Test Load
5/13
5 Page 
DIM.
A
A1
A2
B
C
D
E
e
H
h
L
k
ddd
MIN.
1.35
0.10
1.10
0.33
0.19
4.80
3.80
5.80
0.25
0.40
SO-8 MECHANICAL DATA
mm.
TYP
1.27
MAX.
1.75
0.25
1.65
0.51
0.25
5.00
4.00
MIN.
0.053
0.04
0.043
0.013
0.007
0.189
0.150
6.20 0.228
0.50 0.010
1.27 0.016
8˚ (max.)
0.1
inch
TYP.
0.050
ST485E
MAX.
0.069
0.010
0.065
0.020
0.010
0.197
0.157
0.244
0.020
0.050
0.04
0016023/C
11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet 8339.PDF ] | |
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