|
|
PDF SP485 Data sheet ( Hoja de datos )
| Número de pieza | SP485 | |
| Descripción | Low Power Half-Duplex RS-485 Transceivers | |
| Fabricantes | Exar | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SP485 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
SP483 / SP485
Low Power Half-Duplex RS-485 Transceivers
FEATURES
• +5V Only
• Low Power BiCMOS
• Driver / Receiver Enable
• Slew Rate Limited Driver for Low EMI (SP483)
• Low Power Shutdown mode (SP483)
• RS-485 and RS-422 Drivers/Receivers
DESCRIPTION
The SP483 and SP485 are a family of half-duplex transceivers that meet the specifications
of RS-485 and RS-422. Their BiCMOS design allows low power operation without sacrificing
performance. The SP485 meets the requirements of RS-485 and RS-422 up to 5Mbps. Ad-
ditionally, the SP483 is equipped with a low power Shutdown mode. The SP483 is internally
slew rate limited to reduce EMI and can meet the requirements of RS-485 and RS-422 up
to 250kbps.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP483_SP485_101_062711
1 page  
TMIN to TMAX and VCC = 5V +/-5% unless otherwise noted.
PARAMETERS
MIN.
SP483 DRIVER
AC Characteristics
Maximum Date Rate
250
TYP.
ELECTRICAL CHARACTERISTICS
MAX. UNITS CONDITIONS
kbps
Driver Input to Output, tPLH
250 800 2000
ns tPLH; RDIFF = 54Ω, CL1 = CL2 = 100pF,
see figures 3 and 5
Driver Input to Output, tPHL
250 800 2000
ns tPHL; RDIFF = 54Ω, CL1 = CL2 = 100pF,
see figures 3 and 5
Driver Skew
Driver Rise or Fall Time
100 800
250 2000
ns see figures 3 and 5,
tSKEW = |tDPHL - tDPLH|
ns From 10%-90%; RDIFF = 54Ω
CL1 = CL2 = 100pF; see Figures 3
and 5
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from High
Driver Disable Time from Low
SP483 RECEIVER
250
250
300
300
2000
2000
3000
3000
ns CL = 100pF, see figures 4 and 6,
S2 closed
ns CL = 100pF, see figures 4 and 6,
S1 closed
ns CL = 15pF, see figures 4 and 6,
S2 closed
ns CL = 15pF, see figures 4 and 6,
S1 closed
AC Characteristics
Maximum Data Rate
250
kbps
Receiver Input to Output
250
2000
Differential Receiver Skew
|tPHL - tPLH|
Receiver Enable to Output Low
100
20 50
Receiver Enable to Output High
20 50
Receiver Disable from LOW
20 50
Receiver Disable from High
20 50
SP483
ns tPLH, tPHL; Figures 3 and 7:
RDIFF = 54Ω, CL1 = CL2 = 100pF
ns RDIFF = 54Ω, CL1 = CL2 = 100pF,
see Figures 3 and 7
ns CRL = 15pF, Figures 2 and 8;
S1 Closed
ns CRL = 15pF, Figures 2 and 8;
S2 Closed
ns CRL = 15pF, Figures 2 and 8;
S1 Closed
ns CRL = 15pF, Figures 2 and 8;
S2 Closed
Shutdown Timing
Time to Shutdown
50 200 600
ns RE = 5V, DE = 0V
Driver Enable from Shutdown
to Output High
Driver Enable from Shutdown
to Output Low
Receiver Enable from
Shutdown to Output High
Receiver Enable from
Shutdown to Output Low
2000
2000
2500
2500
ns CL = 100pF; See Figures 4 and 6;
S2 Closed
ns CL = 100pF; See Figures 4 and 6;
S1 Closed
ns CL = 15pF; See Figures 4 and 6;
S2 Closed
ns CL = 15pF; See Figures 4 and 6;
S1 Closed
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP483_SP485_101_062711
5 Page 
ORDERING INFORMATION
Model
Temperature Range
Package Types
SP483CN-L.......................................................................... 0°C to +70°C................................................................................................8-pin NSOIC
SP483CN-L/TR.................................................................... 0°C to +70°C................................................................................................8-pin NSOIC
SP483EN-L........................................................................ -40°C to +85°C...............................................................................................8-pin NSOIC
SP483EN-L/TR.................................................................. -40°C to +85°C...............................................................................................8-pin NSOIC
SP485CN-L.......................................................................... 0°C to +70°C................................................................................................8-pin NSOIC
SP485CN-L/TR.................................................................... 0°C to +70°C................................................................................................8-pin NSOIC
SP485CS-L......................................................................... 0°C to +70°C.................................................................................................8-pin PDIP
SP485EN-L........................................................................ -40°C to +85°C...............................................................................................8-pin NSOIC
SP485EN-L/TR.................................................................. -40°C to +85°C...............................................................................................8-pin NSOIC
SP485ES-L........................................................................ -40°C to +85°C...............................................................................................8-pin PDIP
Note: /TR = Tape and Reel
revision history
DATE
07/28/04
07/14/10
June 2011
REVISION
--
1.0.0
1.0.1
DESCRIPTION
Legacy Sipex Datasheet
Convert to Exar Format. Update ordering information as a result of discontinued
Lead type package options per PDN 081126-01. Remove all options and reference
to SP481; Part is EOL. Remove "GND" entry from Minimum column of SP483/485
driver DC Characteristic paramter "Differential output voltage - Unloaded".
Remove Driver Short Circuit Current minimum. Change Vcc ABS MAX Rating from
+12V to +7V. Add 12k ohm minimum value to receiver Input Resistance. Change
SP485 receiver propagation delay MIN and TYP to 20 and 45ns respectively,
receiver Enable and Disable TYP and MAX to 45 and 70ns respectively. Remove
SP483CS-L and SP483ES-L ordering part number per PDN 110510-01.
Notice
EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliabil-
ity. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for
illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked;
no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for
use in such applications unless EXAR Corporation receives, in writting, assurances to its satisfaction that: (a) the risk of injury or damage has been
minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Copyright 2011 EXAR Corporation
Datasheet June 2011
Send your serial transceiver technical inquiry with technical details to: [email protected]
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
11
SP483_SP485_101_062711
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SP485.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SP481 | Low Power Half-Duplex RS-485 Transceivers |  Sipex |
| SP481E | Enhanced Low Power Half-Duplex RS-485 Transceivers | Exar |
| SP481E | Enhanced Low Power Half-Duplex RS-485 Transceivers | Sipex |
| SP481R | High-Fanout RS-485 Transceiver | Sipex |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |