|
|
PDF SP3076E Data sheet ( Hoja de datos )
| Número de pieza | SP3076E | |
| Descripción | (SP3070E - SP3078E) Transceivers | |
| Fabricantes | Sipex Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SP3076E (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
® SP3070E - SP3078E Family
±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe
RS-485/RS422 Transceivers
FEATURES
■ ±15kV ESD protection for RS485 pins
■ 3.3V low-power operation
■ Advanced Receiver-failsafe protection for
open, shorted or terminated lines
■ Up to 256 Transceivers may share Bus
■ Very low load for 8x greater fanout
■ Hot Swap glitch protection RE and DE
■ Thermal shutdown protects against driver
contention
■ Available in three industry standard foot-
prints
■ SP3070E, 3073 and 3076 in Full-Duplex (14 pin)
■ SP3071E, 3074 and 3077 in Full-Duplex (8 pin)
■ SP3072E, 3075 and 3078 in Half-Duplex (8 pin)
■ Three applications-optimized speed grades
■ SP3070-72E: 250kbps slew-limited
■ SP3073-75E: 500kbps slew-limited
■ SP3076-78E: 16Mbps high speed
■ Small form factor SO-narrow packages
■ Industrial (-40 to +85ºC) and Extended
(-40 to +85ºC) temperature grades
RO 1
RE 2
DE 3
DI 4
8 PIN NSOIC
SP3072E
SP3075E
SP3078E
Half Duplex
8 VCC
7B
6A
5 GND
VCC 1
RO 2
DI 3
GND 4
8 PIN NSOIC
SP3071E
SP3074E
SP3077E
Full Duplex
8A
7B
6Z
5Y
NC 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
14 Pin NSOIC
SP3070E
SP3073E
SP3076E
Full Duplex
14 VCC
13 NC
12 A
11 B
10 Z
9Y
8 NC
Now Available in Lead Free Packaging
APPLICATIONS
■ Industrial Control, Utility Meters Building Automation, Instrumentation, Point of Sale
DESCRIPTION
The SP3070-3078E differential line transceivers are suitable for bidirectional communication
on balanced multipoint bus transmission lines and comply with both RS485 and RS422 EIA
Standards. Each device consists of a differential driver and differential receiver. All devices
operate from a 3.3V power supply.
High receiver input impedance allows a large number of transceivers to share a common data
bus while maintaining signal margin and without excessive loading or use of expensive
repeaters. The high impedance driver output is maintained over the entire common-mode
voltage range from -7 to +12V. Receivers will failsafe to logic 1 output when inputs are open,
shorted or terminated. Drivers include built-in short-circuit protection and a thermal-overload
shutdown to protect against excessive power dissipation from bus contention or cable faults.
All RS485 inputs are ESD protected up to ±15kV (Air-Gap and Human Body Model) and up
to ±8kV Contact discharge (IEC 1000-4-2).
Date: 03/28/05
SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers
1
© Copyright 2005 Sipex Corporation
1 page  
DRIVER SWITCHING CHARACTERISTICS
Unless otherwise noted VCC = +3.3 ±0.3V, ambient temperature TMIN < TA < TMAX. Typical values are at VCC = 3.3,
ambient temperature TA = +25ºC.
SP3070E, SP3071E & SP3072E DRIVER SWITCHING CHARACTERISTICS
PARAMETER
SYMBOL MIN. TYP. MAX. UNITS
CONDITIONS
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
tDPLH
tDPHL
tDR, tDF
250
250
350
- 1500 ns CL = 50pF, RL = 54Ω ,
- 1500 ns Figure 2 & 3
-
1600
ns
CL = 50pF, RL = 54Ω ,
Figure 2 & 3
Driver Differential Output Skew
(tDPLH - t )DPHL
Maximum Data Rate
tDSKEW
-
-
200
ns
CL = 50pF, RL = 54Ω ,
Figure 2 & 3
250 -
- kbps
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Driver Enable from Shutdown to
Output High
tDZH
tDZL
tDLZ
tDHZ
tDZH(SHDN)
-
-
-
-
-
- 2500 ns Figure 4
- 2500 ns Figure 5
- 100 ns Figure 5
- 100 ns Figure 4
- 5500 ns Figure 4
Driver Enable from Shutdown to
Output Low
tDZL(SHDN)
-
- 5500 ns Figure 5
Time to Shutdown
tSHDN
50 200 600
ns
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted VCC = +3.3 ±0.3V, ambient temperature TMIN < TA < TMAX. Typical values are at VCC = 3.3,
ambient temperature TA = +25ºC.
Receiver Switching Characteristics SP3070, SP3071 & SP3072
PARAMETER
SYMBOL MIN. TYP. MAX. UNITS
CONDITIONS
Receiver Propagation Delay
tRPLH
tRPHL
- - 200 ns
CL = 15pF, Figure 6 & 7
- - 200 ns
Receiver Output Skew (tDPLH - tDPHL)
tRSKEW
-
- 30 ns CL = 15pF, Figure 6 & 7
Data Rate
250 -
- kbps
Receiver Enable to Output High
Receiver Enable to Output Low
Receiver Disable Time from Low
Receiver Disable Time from High
Receiver Enable from Shutdown to
Output High
tRZH
tRZL
tRLZ
tRHZ
tRZH(SHDN)
-
-
-
-
-
- 50 ns Figure 8
- 50 ns Figure 8
- 200 ns Figure 8
- 100 ns Figure 8
- 4000 ns Figure 8
Receiver Enable from Shutdown to
Outtput Low
tRZL(SHDN)
-
- 4000 ns Figure 8
Date: 03/28/05
SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers
5
© Copyright 2005 Sipex Corporation
5 Page 
FIGURE 7. RECEIVER ENABLE & DISABLE TIMES TEST CIRCUIT
1.5V
-1.5V
S3 B
AR
RE
GENERATOR
50Ω
1kΩ
CL = 15pF
S1
S2
VCC
FIGURE 8. RECEIVER ENABLE & DISABLE TIMING DIAGRAM
S1 is open S2 is closed S3 = 1.5V
3V
1.5V
RE
t tZH, ZH(SHDN)
VOH
OUT
VOH/2
0V
S1 is closed, S2 is open, S3 = -1.5V
3V
RE 1.5V
t tZL, ZL(SHDN)
0V
OUT
VOL = VCC/2
VCC
VOL
S1 is open S2 is closed S3 = 1.5V
RE
0.25V
1.5V
tHZ
3V
VOH
OUT
0V
S1 is closed, S2 is open, S3 = -1.5V
RE 1.5V
3V
tLZ
0V
OUT
0.25V
VCC
VOL
Date: 03/28/05
SP3070E - SP3078E Family, ±15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers
11
© Copyright 2005 Sipex Corporation
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet SP3076E.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SP3076E | RS-485/RS422 Transceivers |  Exar |
| SP3076E | (SP3070E - SP3078E) Transceivers | Sipex Corporation |
| 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 |