SP3070ECN [SIPEX]
Line Transceiver, 1 Func, 1 Driver, 1 Rcvr, BICMOS, PDSO14, MS-012AB, SOIC-14;
| 型号： | SP3070ECN |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Line Transceiver, 1 Func, 1 Driver, 1 Rcvr, BICMOS, PDSO14, MS-012AB, SOIC-14 信息通信管理 光电二极管 |
| 文件： | 总22页 (文件大小：158K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
SP307XE
PRELIMINARY
3.3V±15kV ESD-Protected RS-485/RS422 Transceivers
FEATURES
■ 3.3V Operation
VCC
1
2
3
4
8
7
6
5
A
8 PIN NSOIC
B
RO
DI
■ Electrostatic Discharge (ESD) Protection for
SP3071E
SP3074E
SP3077E
Z
Y
RS-485 I/O Pins
GND
±15kV Human Body Model (Airgap & Contact)
■ True Failsafe Receiver while maintaining EIA/
Now Available in Lead Free Packaging
TIA-485 Compatibility
■ Hot Swap Input Structure on DE and RE
■ Enhanced Slew-rate Limiting Facilitates Error-
Free Data Transmission on long transmission
lines (SP3070E-SP3075E)
APPLICATIONS
■
■
■
■
■
Lighting Systems
Industrial Control
Electric Meters
Security Systems
Instrumentation
■ Low-Current Shutdown Mode (Except
SP3071E/SP3074E/SP3077E)
■ Allow up to 256 Transceivers on the Bus
■ Available in Industry-Standard 8-Pin SO
Package
DESCRIPTION
The SP307XE family contains differential line transceivers suitable for high speed bidirectional
communication on multipoint bus transmission lines. They are designed for balanced data
transmission and comply with both RS485 and RS422 EIA Standards. Each part contains one
differential driver and one differential receiver. SP3071E, SP3073E, SP3074E, SP3076E, and
SP3077E are full-duplex devices. SP3072E, SP3075E, and SP3078E are half-duplex devices.
SP3070E, SP3073E, SP3076E, and all half-duplex devices allow enable and disable both driver
and receiver independently. The high impedance driver output is maintained over the entire
common-mode voltage range from -7 to +12V.
The SP307XE family operates from a single 3.3V power supply. Excessive power dissipation
caused by bus contention or by output shorting is prevented by short-circuit protection and
thermal shutdown. This feature forces the driver output into high-impedance state if, during fault
conditions, the absolute value of the output current exceeds 250mA or the junction temperature
exceeds 165ºC.
Up to 256 transceivers may be connected simultaneously on a bus, but only one driver should
be enabled at a time.
The receiver contains a fail-safe feature that results in a logic high state if the inputs are
unconnected (floating), shorted or terminated.
The SP30XXE family is fabricated on BICMOS technology. All inputs and outputs have ESD
protection. Bus pins are ESD protected up to ± 15kV from Air-Gap and Human Body Model
Discharge and up to ±8kV Contact discharge (IEC 1000-4-2).
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Continuous Power Dissipation at Ta = 70oC
These are stress ratings only and functional operation of the device at
theseratingsoranyotherabovethoseindicatedintheoperationsections
ofthespecificationsbelowisnotimplied. Exposuretoabsolutemaximum
rating conditions for extended periods of time may affect reliability.
VCC.....................................................................................................+6.0V
Input Voltage at control input pins (RE, DE).........................-0.3V to 6V
Driver Input Voltage (RE, DE)...............................................-0.3V to 6V
Driver Output Voltage (A, B, Y, & Z)....................................-8V to +13V
Receiver Input Voltage (A, B)..............................................-8V to +13V
8-pin SO (derate 5.88mW/oC above +70oC)................................471mW
8-pin PDIP (derate 9.29mW/oC above +70oC)............................727mW
14-pin SO (derate 8.33mW/oC above +70oC).............. .............667mW
14-pin PDIP (derate 10mW/oC above +70oC).................. ..........800mW
Operating Temperature Ranges
SP307_EC__.................................................................0ºC to +70ºC
SP307_EE__...............................................................-40ºC to +85ºC
JunctionTemperature............................................................. ..+150ºC
Storage Temperature Range..........................................-65ºC to +150º C
Lead Temperature (soldering, 10s)........................................... +300º C
ELECTRICAL 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.
PARAMETER
SYM.
MIN. TYP. MAX. UNITS
CONDITIONS
RL=100Ω (RS-422), Figure 1
RL=54Ω (RS-485), Figure 1
No Load
2
VCC
VCC
VCC
Differential Driver Output
VOD
1.5
V
Change in Magnitude of
∆ VOD
0.2
3
V
V
RL=54 or 100Ω , Figure 1
RL=54 or 100Ω , Figure 1
Differential Output Voltage(1)
Driver Common Mode Output
Voltage
VOC
Change in Magnitude of
Common Mode Output
Voltage(1)
∆ VOC
0.2
0.8
V
RL=54 or 100Ω , Figure 1
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Current
VIH
VIL
2
V
V
DE, DI, RE
DE, DI, RE
DE, DI, RE
DE, DI, RE
VHYS
IIN
100
0
mV
µA
-1
1
1
DE, RE
Input Impedance First
Transition (Hotswap)
10
kΩ
µA
mA
First transition will draw more
current (Hotswap)
VIN= +12 V
VIN= -7V
Output Leakage (Y and Z)
Full Duplex (A and B)
DE = GND
IO
VCC = GND or 3.6V
±1
±250
0
0
Driver Short-Circuit Output
Current
IOSD
-7V ≤ VOUT ≤ 12V
-250
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
2
ELECTRICAL 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.
PARAMETERS
SYM
MIN TYP MAX UNITS
CONDITIONS
125
VIN = +12V
VIN = -7V
Input Current (A and B)
Half Duplex
DE = GND
IA,B
µA
VCC = GND or 3.6
-100
Thermal-Shutdown Threshold
Thermal Shutdown Hysteresis
RECEIVER
TTS
165
15
ºC
ºC
TTSH
Receiver Differential Threshold
Voltage
VTH
∆ VTH
VOH
VOL
-200 -125
15
-50
mV
mV
V
-7V≤ VCM ≤ 12V
Receiver Input Hysteresis
RO Output High Voltage
RO Output Low Voltage
Va + Vb = 0V
Vcc -
0.6
I
O = -1mA
0.4
V
IO = 1mA
Tri-State Output Current at
Receiver
IOZR
+/-1
µA
kΩ
mA
0≤ VO ≤ VCC
-7V ≤ VCM ≤ 12V
0V ≤ VRO ≤ VCC
Receiver Input Resistance
RIN
96
±8
Receiver Ouput Short-Circuit
Current
IOZR
±60
SUPPLY CURRENT
0.8
0.8
0.8
1.5
1.5
1.5
No Load, RE = 0, DE = VCC
No Load, RE = VCC, DE = VCC
No Load, RE = 0, DE = 0
Supply Current
ICC
mA
µA
Supply Current in Shutdown
mode
ISHDN
0.05
1
RE = VCC, DE = GND
ESD PROTECTION
±15
±15
±8
Human Body Model
ESD Protection for Y, Z, A, and B
kV
Air Gap (IEC 1000-4-2)
Contact (IEC 1000-4-2)
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
3
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
tDPLH
tDPHL
250
250
-
-
1500
1500
ns
ns
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
t
DR, tDF
350
-
-
-
1600
200
ns
ns
Driver Differential Output Skew
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
tDSKEW
(tDPLH - t DPHL
)
Maximum Data Rate
250
-
-
-
-
-
-
kbps
ns
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
tDZH
tDZL
tDLZ
tDHZ
-
-
-
-
2500
2500
100
100
Figure 4
Figure 5
Figure 5
Figure 4
ns
ns
ns
Driver Enable from Shutdown to
Output High
tDZH(SHDN)
-
-
5500
ns
Figure 4
Figure 5
Driver Enable from Shutdown to
Output Low
tDZL(SHDN)
tSHDN
-
-
5500
600
ns
ns
Time to Shutdown
50
200
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
tRPLH
tRPHL
-
-
-
-
-
-
-
-
-
200
200
30
ns
ns
Receiver Propagation Delay
CL = 15pF, Figure 6 & 7
CL = 15pF, Figure 6 & 7
-
Receiver Output Skew (tDPLH - tDPHL
)
tRSKEW
-
ns
Data Rate
250
-
kbps
ns
Receiver Enable to Output High
Receiver Enable to Output Low
Receiver Disable Time from Low
Receiver Disable Time from High
tRZH
tRZL
tRLZ
tRHZ
-
-
-
-
50
Figure 8
Figure 8
Figure 8
Figure 8
50
ns
100
100
ns
ns
Receiver Enable from Shutdown to
Output High
tRZH(SHDN)
tRZL(SHDN)
-
-
-
-
4000
4000
ns
ns
Figure 8
Figure 8
Receiver Enable from Shutdown to
Outtput Low
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
4
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.
SP3073E, SP3074E & SP3075E DRIVER SWITCHING CHARACTERISTICS
PARAMETER
SYMBOL MIN.
TYP.
MAX. UNITS
CONDITIONS
tDPLH
tDPHL
180
180
-
-
800
800
ns
ns
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
tDR, tDF
tDSKEW
200
-
-
-
800
100
ns
ns
Driver Differential Output Skew
C = 50pF, R = 54Ω ,
(tDPLH - tDPHL
)
FiLgure 2 & 3 L
Data Rate
500
-
-
-
-
-
-
kbps
ns
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
tDZH
tDZL
tDLZ
tDHZ
-
-
-
-
2500
2500
100
100
Figure 4
Figure 5
Figure 5
Figure 4
ns
ns
ns
Driver Enable from Shutdown to
Output High
tDZH(SHDN)
-
-
4500
ns
Figure 4
Figure 5
Driver Enable from Shutdown to
Output Low
tDZL(SHDN)
tSHDN
-
-
4500
600
ns
ns
Time to Shutdown
50
200
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 SP3073, SP3074 & SP3075
PARAMETER
SYMBOL MIN. TYP. MAX. UNITS
CONDITIONS
tRPLH
tRPHL
-
-
-
-
-
-
-
-
-
200
200
30
-
ns
ns
Receiver Propagation Delay
CL = 15pF, Figure 6 & 7
CL = 15pF, Figure 6 & 7
-
Receiver Output Skew (tDPLH - tDPHL
)
tRSKEW
-
ns
Maximum Data Rate
500
kbps
ns
Receiver Enable to Output High
Receiver Enable to Output Low
Receiver Disable Time from Low
Receiver Disable Time from High
tRZH
tRZL
tRLZ
tRHZ
-
-
-
-
50
50
50
50
Figure 8
Figure 8
Figure 8
Figure 8
ns
ns
ns
Receiver Enable from Shutdown to
Output High
tRZH(SHDN)
-
-
4000
ns
Figure 8
Figure 8
Receiver Enable from Shutdown to
Outtput Low
tRZL(SHDN)
tSHDN
-
-
4000
600
ns
ns
Time to Shutdown
50
200
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
5
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
SP3076E, SP3077E & SP3078E DRIVER SWITCHING CHARACTERISTICS
PARAMETER
SYMBOL MIN. TYP. MAX. UNITS
CONDITIONS
tDPLH
tDPHL
-
-
-
-
50
50
ns
ns
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
t
DR, tDF
-
-
-
-
15
8
ns
ns
Driver Differential Output Skew
C = 50pF, R = 54Ω ,
FiLgure 2 & 3 L
tDSKEW
(tDPLH - tDPHL
)
Data Rate
16
-
-
-
-
-
-
-
Mbps
ns
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
tDZH
tDZL
tDLZ
tDHZ
150
150
100
100
Figure 4
Figure 5
Figure 5
Figure 4
-
ns
-
ns
-
ns
Driver Enable from Shutdown to
Output High
tDZH(SHDN)
-
-
1800
ns
Figure 4
Figure 5
Driver Enable from Shutdown to
Output Low
tDZL(SHDN)
tSHDN
-
-
1800
600
ns
ns
Time to Shutdown
50
200
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 SP3076, SP3077 & SP3078
PARAMETER
SYMBOL MIN. TYP. MAX. UNITS
CONDITIONS
tRPLH
tRPHL
-
-
40
40
-
75
75
8
ns
ns
Receiver Propagation Delay
CL = 15pF, Figure 6 & 7
CL = 15pF, Figure 6 & 7
Receiver Output Skew (tDPLH - tDPHL
)
tRSKEW
-
ns
Data Rate
16
-
-
-
Mbps
ns
Receiver Enable to Output High
Receiver Enable to Output Low
Receiver Disable Time from Low
Receiver Disable Time from High
tRZH
tRZL
tRLZ
tRHZ
-
50
50
50
50
Figure 8
Figure 8
Figure 8
Figure 8
-
-
ns
-
-
ns
-
-
ns
Receiver Enable from Shutdown to
Output High
tRZH(SHDN)
-
-
1800
ns
Figure 8
Figure 8
Receiver Enable from Shutdown to
Output Low
tRZL(SHDN)
tSHDN
-
-
1800
600
ns
ns
Time to Shutdown
50
200
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
6
FIGURE 1. DRIVER DC TEST CIRCUIT
FIGURE 2. RECEIVER DC TEST CIRCUIT
A
R/2
OUT
VID
R
B
VOD
DI
D
0 or 3V
R/2
VOC
RE
VCC
FIGURE 3. DRIVER PROPAGATION DELAY TIME TEST CIRCUIT AND TIMING DIAGRAM
C
L
R
L
54Ω
Y
Z
50pF
DI
D
VOD
3.3V
VCC
VCC/2
DI
tPLH
0
tPHL
Z
Y
VO
1/2 VO
10%
1/2 VO
VDIFF = V(Y) - V(Z)
90%
VO
90%
VSKEW = tPLH - PHL
10%
tR
VDIFF
-VO
tF
t
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
7
FIGURE 4. DRIVER ENABLE & DISABLE TIMES TEST CIRCUIT & TIMING DIAGRAM
Y
Z
S1
DI
0 or VCC
D
OUT
RL
= 500Ω
CL = 50pF
GENERATOR
50Ω
V
CC
V
CC
/2
DE
0
0
t
t
ZL, ZL(SHDN
0.25V
V
= (V + V )/2
OL CC
OM
t
LZ
OUT
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
8
FIGURE 5. DRIVER ENABLE & DISABLE TIMES TEST CIRCUIT & TIMING DIAGRAM
VCC
RL = 500Ω
S1
Y
Z
DI
0 or VCC
D
OUT
CL = 50pF
GENERATOR
50Ω
V
CC
V
CC
/2
DE
0
t
t
ZL, ZL(SHDN
t
LZ
V
CC
OUT
V
= (V + V )/2
OL CC
OM
0.25V
V
OL
FIGURE 6. RECEIVER PROPAGATION DELAY TEST CIRCUIT & TIMING DIAGRAM
A
OUT
VID
R
B
C
L
15pF
RE
A
B
+1V
-1V
tPHL
tPLH
VOH
VOL
1.5V
OUT
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
9
FIGURE 7. RECEIVER ENABLE & DISABLE TIMES TEST CIRCUIT
S1
S3
1.5V
B
A
VCC
1kΩ
-1.5V
R
S2
RE
CL = 15pF
GENERATOR
50Ω
FIGURE 8. RECEIVER ENABLE & DISABLE TIMING DIAGRAM
S1 is closed, S2 is open, S3 = -1.5V
3V
S1 is open S2 is closed S3 = 1.5V
3V
1.5V
1.5V
RE
RE
0V
t
ZH, ZH(SHDN)
t
t
ZL, ZL(SHDN)
t
V
OH
V
CC
OUT
V
OH/2
V
OL = VCC/2
OUT
0V
V
OL
S1 is closed, S2 is open, S3 = -1.5V
3V
S1 is open S2 is closed S3 = 1.5V
3V
1.5V
RE
1.5V
RE
t
HZ
0V
tLZ
0.25V
OUT
V
OH
V
CC
0V
OUT
0.25V
V
OL
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
10
FUNCTION TABLES
SP3070E, SP3073E, SP3076E
TRANSMITTING
Inputs
RECEIVING
Outputs
Inputs
DE
Output
RE
X
DE
1
DI
1
Z
0
1
Y
RE
0
A, B
RO
1
1
0
X
X
X
X
0
≥
-50mV
X
1
0
0
≤ -200mV
0
0
0
X
X
High-Z
Shutdown
X
1
1
High-Z
X
1
0
1
Shutdown
SP3070E, SP3073E, SP3076E
TRANSMITTING
Outputs
RECEIVING
Inputs
Inputs
Output
DI
1
Z
0
1
Y
1
0
A, B
RO
1
≥ -50mV
≤ -200mV
0
0
Open/shorted
1
SP3072E, SP3075E, SP3078E
TRANSMITTING
RECEIVING
Inputs
DE
Outputs
Inputs
DE
Output
RE
DI
1
B/Z
0
A/Y
1
RE
0
A, B
-50mV
RO
X
X
0
1
1
1
0
0
X
≥
1
0
0
1
0
0
X
≤ -200mV
X
X
High-Z
Shutdown
X
1
Open/shorted
1
High-Z
X
No Load
X
0
1
Shutdown
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
11
PIN DESCRIPTION
HALF
DUPLEX
DEVICES
FULL DUPLEX
DEVICES
SP3070E
SP3071E
SP3074E
SP3072E
SP3075E
SP3078E
PIN
NAME
PIN FUNCTION
SP3073E
SP3076E
SP3077E
PIN NUMBER
Receiver Output. When RE is low and if (A – B) ≥
-50mV, RO is High. If (A – B) ≤ - 200mV, RO is low.
2
3
2
-
1
2
RO
RE
Receiver Output Enable. When RE is low, RO is enabled.
When RE is high, RO is high impedance. RE should be
high and DE low to enter shutdown mode. RE is a hot-
swap input.
Driver Output Enable. When DE is high, outputs are
enabled. When DE is low, outputs are high impedance. DE
should be low and RE high to enter shutdown mode. DE is
a hot-swap input.
4
5
-
3
4
DE
DI
Driver Input. With DE high, a low level on DI forces
noninverting output low and inverting output high. Similarly,
a high level on DI forces noninverting output high and
inverting output low.
3
6, 7
9
4
5
6
7
-
5
-
GND
Y
Ground
Noninverting Driver Output
Inverting Driver Output
10
11
-
-
Z
-
B
Inverting Receiver Input
7
-
B
Inverting Receiver Input and Inverting Driver Output
Noninverting Receiver Input
12
8
A
Noninverting Receiver Input and Noninverting Driver
Output
-
-
6
A
Positive Supply VCC. Bypass VCC to GND with a 0.1uF
capacitor.
14
1
-
8
-
VCC
NC
1, 8, 13
No Connect
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
12
DETAILED
DETAILED DESCRIPTION
disabled. If A - B is less than or equal to -
200mV, RO is logic low. In the case of a
terminated bus with all transmitters disabled
thereceiver'sdifferentialinputvoltageispulled
to 0V by the termination. With the receiver
thresholdsoftheSP3070Efamily, thisresults
in a logic high with a 50mV minimum noise
margin. In compliance with the EIA/TIA-485
standard, the SP3070E family has a 50mV -
200mV threshold.
TheSP307XEfamilyofhighspeedtransceiv-
ers for RS-485/RS-422 communication con-
tain one driver and one receiver. These
devices feature fail-safe circuitry, which guar-
antees a logic-high receiver output when the
receiver inputs are open or shorted, or when
they are connected to a terminated transmis-
sion line with all drivers disabled. The
SP3070E, SP3072E, SP3073E, SP3075E,
SP3076E and SP3078E also feature a
hotswapcapabilityallowingliveinsertionwith-
out error data transfer. The SP3070E,
SP3071EandSP3072Efeaturereducedslew-
rate drivers that minimize EMI and reduce
reflections caused by improperly terminated
cables, allowing error-free data transmission
up to 250kbps. The SP3073E, SP3074E and
SP3075E also offer slew -rate limits allowing
transmitspeedsupto500kbps. TheSP3076E,
SP3077E, SP3078E driver slew rates are not
limited,makingtransmitspeedsupto16Mbps
possible.
The SP3072E, SP3075E and SP3078E are
half-duplex transceivers, while the SP3070E,
SP3071E, SP3073E, SP3074E, SP3076E,
and SP3077E are full duplex transceivers.
Alldevicesoperatefromasingle3.3Vsupply.
Driversareoutputshort-circuitcurrentlimited.
Thermal-shutdown circuitry protects drivers
against excessive power dissipation. When
activated, the thermal-shutdown circuitry
places the driver outputs into a high-imped-
ance state.
HOT-SWAP CAPABILITY
When circuit boards are inserted into a hot
backplane, differential disturbances to the
data bus can lead to data errors. Upon initial
circuit board insertion, the data communica-
tion processor undergoes its own power-up
sequence. Duringthisperiod, theprocessor's
logic-output drivers are high impedance and
are unable to drive the DE and RE inputs of
these devices to a defined logic level. Leak-
agecurrentsupto10µAfromthehigh-imped-
ance state of the processor's logic drivers
couldcausestandardCMOSenableinputsof
a transceiver to drift to an incorrect logic level.
Additionally, parasitic circuit board capaci-
tancecouldcausecouplingofVCCorGNDto
theenableinputs.Withoutthehot-swapcapa-
bility, these factors could improperly enable
the transceiver's driver or receiver.
When VCC rises, an internal pulldown circuit
holds DE low and RE high for approximately
10 microseconds. After the initial power-up
sequence,thepulldowncircuitbecomestrans-
parent, resettingthehot-swaptolerableinput.
RECEIVER INPUT FILTERING
SP3070-SP3075 receivers incorporate input
filtering in addition to input hysteresis. This
filtering enhances noise immunity with differ-
ential signals that have very slow rise and fall
times. Receiver propagation delay increases
by 25% due to this filtering.
15KV ESD PROTECTION
As with all Sipex devices, ESD-protection
structures are incorporated on all pins to
protect against electrostatic discharges en-
counteredduringhandlingandassembly.The
driver output and receiver inputs of the
SP3070Efamilyofdeviceshaveextraprotec-
tion against static electricity. Sipex's engi-
neering team have developed state of the art
structures to protect these pins against ESD
of 15kV without damage. The ESD structures
withstand high ESD in all states: normal op-
FAIL SAFE
The SP3070 family guarantees a logic-high
receiver output when the receiver inputs are
shorted, open, or when they are connected to
a terminated transmission line with all drivers
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
13
DETAILED
256 TRANSCEIVERS ON THE BUS
eration, shutdown, and powered down. After
anESDevent, theSP3070E-SP3078Ekeep
working without latchup or damage.
ESDprotectioncanbetestedinvariousways.
Thetransmitteroutputsandreceiverinputsof
the SP3070E - SP3078E are characterized
for protection to the following limits:
The standard RS-485 receiver input
impedance is 12kΩ (1 unit load), and the
standard driver can drive up to 32 unit
loads. The SP3070E family of transceivers
has a 1/8-unit load receiver input imped-
ance (96Ω), allowing up to 256 transceiv-
ers to be connected in parallel on one
communication line. Any combination of
these devices as well as other RS-485
transceivers with a total of 32 unit loads or
fewer can be connected to the line.
■ ±15kV using the Human Body Model
■ ±8kV using the Contact Discharge
method specified in IEC 1000-4-2
■ ±15kV Airgap
REDUCED EMI AND REFLECTIONS
The SP3070E, SP3071E and SP3072E
feature reduced slew-rate drivers that
minimize EMI and reduce reflections
caused by improperly terminated cables,
allowing error-free data transmission up to
250kbps. The SP3073, SP3074 and
SP3075 offer higher driver output slew-
rate limits, allowing transmit speeds up to
500kbps.
ESD TEST CONDITIONS
ESD performance depends on a variety of
conditions. Contact Sipex for a reliability
report that documents test setup, method-
ology and results.
IEC 1000-4-2
The IEC 1000-4-2 standard covers ESD
testing and performance of finished
equipment. However, it does not specifi-
cally refer to integrated circuits. The
SP3070E family of devices helps you
design equipment to meet IEC 1000-4-2,
without the need for additional ESD-
protection components.
The major difference between tests done
using the Human Body Model and IEC
1000-4-2 is higher peak current in IEC
1000-4-2, because series resistance is
lower in the IEC 1000-4-2 model. Hence,
the ESD withstand voltage measured to
EC 1000-4-2 is generally lower than that
measured using the human body model.
LOW POWER SHUTDOWN MODE
Low-power shutdown mode is initiated by
bringing both RE high and DE low. In
shutdown, the devices typically draw only
50nA of supply current.
RE and DE can be driven simultaneously;
the parts are guaranteed not to enter
shutdown if RE is high and DE is low for
less than 50ns. If the inputs are in this
state for at least 600ns, the parts are
guaranteed to enter shutdown.
Enable times t and t assume the part
was not in a loZwH-poweZrLshutdown state.
Enable times tZH(SHDN) and t
The air-gap test involves approaching the
device with a charged probe. The contact-
discharge method connects the probe to
the device before the probe is energized.
assume the parts were shutZdL(oSwHDnN.)It takes
drivers and receivers longer to become
enabled from low-power shutdown mode
MACHINE MODEL
t
and t
than from driver/
rZeHc(eSHivDeNr)-disabZleL(SmHoDNd)e (tZH, tZL)
The machine model for ESD tests all pins
using a 200pF storage capacitor and zero
discharge resistance. The objective is to
emulate the stress caused when I/O pins
are contacted by handling equipment
during test and assembly.
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
14
DETAILED DESCRIPTION
DRIVER OUTPUT PROTECTION
Two mechanisms prevent excessive
output current and power dissipation
caused by faults or by bus contention.
First, current limit on the ouput stage,
provides immediate protection against
short circuits over the whole common-
mode voltage range. Second, a thermal-
shutdown circuit, forces the driver outputs
into a high-impedance state if the die
temperature becomes excessive.
LINE LENGTH
The RS-485/RS422 standard covers line
lengths up to 4000ft.
TYPICAL APPLICATIONS
The SP3072E, SP3075E and SP3078E
transceivers are designed for bidirectional
data communications on multipoint bus
transmission lines.
To minimize reflections, terminate the line
at both ends in its characteristic imped-
ance, and keep stub lengths off the main
line as short as possible. The slew-rate-
limited SP3072E and SP3075 are more
tolerant of imperfect termination.
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
15
PARTS SELECTOR GUIDE
DATA
RATE
Mbps
RECEIVER
DRIVER
ENABLE
PART
NUMBER
HALF/FULL
DUPLEX
SHUT-
DOWN
TRANS.
PIN
INDUSTRY
ON BUS COUNT STANDARD PINOUT
SP3070E
SP3071E
SP3072E
SP3073E
SP3074E
SP3075E
SP3076E
SP3077E
SP3078E
Full
Full
Half
Full
Full
Half
Full
Full
Half
0.25
0.25
0.25
0.5
0.5
0.5
16
Yes
No
Yes
No
256
256
256
256
256
256
256
256
256
14
8
MAX3070E, 75180
MAX3071E, 75179
MAX3072E, 75176
MAX3073E, 75180
MAX3074E, 75179
MAX3075E, 75176
MAX3076E, 75180
MAX3077E, 75179
MAX3078E, 75176
Yes
Yes
No
Yes
Yes
No
8
14
8
Yes
Yes
No
Yes
Yes
No
8
14
8
16
16
Yes
Yes
8
PINOUT DRAWINGS
VCC
8
1
2
3
4
VCC
1
RO
A
8
7
6
5
RE
B
7
B
2
RO
8 PIN NSOIC
8 PIN PDIP
8 PIN NSOIC
8 PIN PDIP
DE
DI
6
5
DI
3
4
A
Z
Y
GND
GND
SP3072E, SP3075E, AND SP3078E
SP3071E, SP3074E, AND SP3077E
NC
RO
RE
DE
DI
1
2
3
4
5
6
7
VCC
NC
A
14
13
12
11
10
14 Pin PDIP
14 Pin NSOIC
B
Z
GND
Y
9
8
NC
GND
SP3070E, SP3073E, AND SP3076E
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
16
PACKAGE: 8 PIN PDIP
N
E
INDEX
AREA
E
E1
2
3
N/2
1
c
eA
A1
eB
D
A
e
A2
D1
L
b
b2
b3
b
c
8 PIN PDIP JEDEC MS-001 (BA) Variation
SYMBOL
MIN
-
0.15
0.115
0.014
0.045
0.3
0.008
0.355
0.005
0.3
NOM
-
-
MAX
0.21
-
0.195
0.022
0.07
0.045
0.014
0.4
A
A1
A2
b
b2
b3
c
D
D1
E
E1
e
eA
eB
L
0.13
0.018
0.06
0.039
0.01
0.365
-
0.31
0.25
.100 BSC
.300 BSC
-
-
0.325
0.28
0.24
-
0.43
0.15
0.115
0.13
Note: Dimensions in (mm)
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
17
PACKAGE: 14 PIN PDIP
N
1
E
INDEX
AREA
E
E1
2
3
N/2
c
eA
eB
A1
D
A
e
A2
D1
L
b2
b3
b
14 PIN PDIP JEDEC MS-001 (AA) Variation
SYMBOL
MIN
-
0.15
0.115
0.014
0.045
0.3
0.008
0.735
0.005
0.3
NOM
-
-
MAX
0.21
-
0.195
0.022
0.07
0.045
0.014
0.755
-
A
A1
A2
b
b2
b3
c
D
D1
E
E1
e
eA
eB
L
0.13
0.018
0.06
0.039
0.01
0.75
-
0.31
0.25
.100 BSC
.300 BSC
-
b
c
0.325
0.28
0.24
-
0.43
0.15
0.115
0.13
Note: Dimensions in (mm)
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
18
PACKAGE: 8 PIN NSOIC
D
Ø
e
E/2
L2
E1
E1/2
E
Ø
Seating Plane
Ø1
L
L1
Gauge Plane
VIEW C
1
b
INDEX AREA
(D/2 X E1/2)
TOP VIEW
A1
A
Seating Plane
A2
SIDE VIEW
8 Pin NSOIC JEDEC MO-012 (AA) Variation
MIN
1.35
0.1
1.25
0.31
0.17
NOM
MAX
1.75
0.25
1.65
0.51
0.24
SYMBOL
A
A1
A2
b
-
B
B
-
-
-
-
SEE VIEW C
c
D
E
E1
e
L
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
-
0.4
1.27
b
L1
L2
ø
1.04 REF
0.25 BSC
-
0º
5º
8º
15º
ø1
-
c
Note: Dimensions in (mm)
BASE METAL
SECTION B-B
WITH PLATING
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
19
PACKAGE: 14 PIN NSOIC
D
Ø
e
E/2
L2
E1
Ø
E
Seating Plane
Ø1
L
E1/2
L1
Gauge Plane
VIEW C
1
b
INDEX AREA
(D/2 X E1/2)
TOP VIEW
A1
A
Seating Plane
A2
SIDE VIEW
14 Pin NSOIC JEDEC MO-012 (AB) Variation
MIN
1.35
0.1
1.25
0.31
0.17
NOM
MAX
1.75
0.25
1.65
0.51
0.25
SYMBOL
A
A1
A2
b
-
-
-
-
-
B
B
c
SEE VIEW C
D
E
E1
e
L
8.65 BSC
6.00 BSC
3.90 BSC
1.27 BSC
-
0.4
1.27
L1
L2
ø
1.04 REF
0.25 BSC
-
b
0º
5º
8º
15º
ø1
-
c
Note: Dimensions in (mm)
BASE METAL
SECTION B-B
WITH PLATING
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
20
ORDERING INFORMATION
Model
Temperature Range
Package
SP3070ECN ..................................................... 0ûC to +70ûC....................................................... 14-pin NSOIC
SP3070ECN/TR................................................ 0ûC to +70ûC....................................................... 14-pin NSOIC
SP3070ECP...................................................... 0ûC to +70ûC.......................................................... 14-pin PDIP
SP3070EEN.................................................... -40ûC to +85ûC ..................................................... 14-pin NSOIC
SP3070EEN/TR .............................................. -40ûC to +85ûC ..................................................... 14-pin NSOIC
SP3070EEP .................................................... -40ûC to +85ûC ........................................................ 14-pin PDIP
SP3071ECN ..................................................... 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3071ECN/TR................................................ 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3071ECP...................................................... 0ûC to +70ûC............................................................ 8-pin PDIP
SP3071EEN.................................................... -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3071EEN/TR .............................................. -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3071EEP .................................................... -40ûC to +85ûC .......................................................... 8-pin PDIP
SP3072ECN ..................................................... 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3072ECN/TR................................................ 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3072ECP...................................................... 0ûC to +70ûC............................................................ 8-pin PDIP
SP3072EEN.................................................... -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3072EEN/TR .............................................. -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3072EEP .................................................... -40ûC to +85ûC .......................................................... 8-pin PDIP
SP3073ECN .................................................... -0ûC to +70ûC ...................................................... 14-pin NSIOC
SP3073ECN/TR............................................... -0ûC to +70ûC ...................................................... 14-pin NSIOC
SP3073ECP...................................................... 0ûC to +70ûC.......................................................... 14-pin PDIP
SP3073EEN.................................................... -40ûC to +85ûC ..................................................... 14-pin NSIOC
SP3073EEN/TR .............................................. -40ûC to +85ûC ..................................................... 14-pin NSIOC
SP3073EEP .................................................... -40ûC to +85ûC ........................................................ 14-pin PDIP
SP3074ECN ..................................................... 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3074ECN/TR................................................ 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3074ECP...................................................... 0ûC to +70ûC............................................................ 8-pin PDIP
SP3074EEN.................................................... -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3074EEN/TR .............................................. -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3074EEP .................................................... -40ûC to +85ûC .......................................................... 8-pin PDIP
Available in lead free packaging. To order add “-L” suffix to part number.
Example: SP3074EEN/TR = standard; SP3074EEN-L/TR = lead free
/TR = Tape and Reel
Pack quantity is 2,500 for NSOIC.
CLICK HERE TO ORDER SAMPLES
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
21
ORDERING INFORMATION
Model
Temperature Range
Package
SP3075ECN ..................................................... 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3075ECN/TR................................................ 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3075ECP...................................................... 0ûC to +70ûC............................................................ 8-pin PDIP
SP3075EEN.................................................... -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3075EEN/TR .............................................. -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3075EEP .................................................... -40ûC to +85ûC .......................................................... 8-pin PDIP
SP3076ECN ..................................................... 0ûC to +70ûC....................................................... 14-pin NSOIC
SP3076ECN/TR................................................ 0ûC to +70ûC....................................................... 14-pin NSOIC
SP3076ECP...................................................... 0ûC to +70ûC.......................................................... 14-pin PDIP
SP3076EEN.................................................... -40ûC to +85ûC ..................................................... 14-pin NSOIC
SP3076EEN/TR .............................................. -40ûC to +85ûC ..................................................... 14-pin NSOIC
SP3076EEP .................................................... -40ûC to +85ûC ........................................................ 14-pin PDIP
SP3077ECN ..................................................... 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3077ECN/TR................................................ 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3077ECP...................................................... 0ûC to +70ûC............................................................ 8-pin PDIP
SP3077EEN.................................................... -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3077EEN/TR .............................................. -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3077EEP .................................................... -40ûC to +85ûC .......................................................... 8-pin PDIP
SP3078ECN ..................................................... 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3078ECN/TR................................................ 0ûC to +70ûC......................................................... 8-pin NSOIC
SP3078ECP...................................................... 0ûC to +70ûC............................................................ 8-pin PDIP
SP3078EEN.................................................... -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3078EEN/TR .............................................. -40ûC to +85ûC ....................................................... 8-pin NSOIC
SP3078EEP .................................................... -40ûC to +85ûC .......................................................... 8-pin PDIP
Available in lead free packaging. To order add “-L” suffix to part number.
Example: SP3078EEN/TR = standard; SP3078EEN-L/TR = lead free
/TR = Tape and Reel
Pack quantity is 2,500 for NSOIC.
CLICK HERE TO ORDER SAMPLES
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
Date: 12/06/04
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2004 Sipex Corporation
22
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