®
PRELIMINARY
SP307XE
3.3V
±15kV
ESD-Protected RS-485/RS422 Transceivers
FEATURES
■
3.3V Operation
■
Electrostatic Discharge (ESD) Protection for
RS-485 I/O Pins
±15kV
Human Body Model (Airgap & Contact)
■
True Failsafe Receiver while maintaining EIA/
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)
■
Low-Current Shutdown Mode (Except
SP3071E/SP3074E/SP3077E)
■
Allow up to 256 Transceivers on the Bus
■
Available in Industry-Standard 8-Pin SO
Package
V
CC
1
RO
2
8
A
8 PIN NSOIC
SP3071E
SP3074E
SP3077E
7
B
6
DI
3
GND
4
Z
5
Y
Now Available in Lead Free Packaging
APPLICATIONS
■
Lighting Systems
■
Industrial Control
■
Electric Meters
■
Security Systems
■
Instrumentation
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: 02/09/05
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2005 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
V
CC
.....................................................................................................+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
Continuous Power Dissipation at Ta = 70
o
C
8-pin SO (derate 5.88mW/
o
C above +70
o
C)................................471mW
8-pin PDIP (derate 9.29mW/
o
C above +70
o
C)............................727mW
14-pin SO (derate 8.33mW/
o
C above +70
o
C).............. .............667mW
14-pin PDIP (derate 10mW/
o
C above +70
o
C).................. ..........800mW
Operating Temperature Ranges
SP307_EC__.................................................................0ºC to +70ºC
SP307_EE__...............................................................-40ºC to +85ºC
Junction Temperature............................................................. ..+150ºC
Storage Temperature Range..........................................-65ºC to +150º C
Lead Temperature (soldering, 10s)........................................... +300º C
ELECTRICAL CHARACTERISTICS
Unless otherwise noted V
CC
= +3.3
±0.3V,
ambient temperature T
MIN
< T
A
< T
MAX
. Typical values are at V
CC
= 3.3,
ambient temperature T
A
= +25ºC.
PARAMETER
SYM.
MIN.
2
TYP.
MAX.
V
CC
V
CC
V
CC
UNITS
CONDITIONS
RL=100
Ω
(RS-422), Figure 1
Differential Driver Output
V
OD
1.5
V
RL=54
Ω
(RS-485), Figure 1
No Load
Change in Magnitude of
Differential Output Voltage(1)
Driver Common Mode Output
Voltage
Change in Magnitude of
Common Mode Output
Voltage(1)
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Current
Input Impedance First
Transition (Hotswap)
Output Leakage (Y and Z)
Full Duplex (A and B)
Driver Short-Circuit Output
Current
∆
V
OD
V
OC
0.2
3
V
V
RL=54 or 100
Ω
, Figure 1
RL=54 or 100
Ω
, Figure 1
∆
V
OC
V
IH
V
IL
V
HYS
I
IN
-1
1
100
0
2
0.2
V
V
RL=54 or 100
Ω
, Figure 1
DE, DI, RE
DE, DI, RE
DE, DI, RE
DE, DI, RE
DE, RE
First transition will draw more
current (Hotswap)
DE = GND
V
CC
= GND or 3.6V
-7V
≤
V
OUT
≤
12V
V
IN
= +12 V
V
IN
= -7V
0.8
V
mV
1
10
µA
k
Ω
I
O
0
I
OSD
-250
µA
±1
±250
mA
0
Date: 02/09/05
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2005 Sipex Corporation
2
ELECTRICAL CHARACTERISTICS
Unless otherwise noted V
CC
= +3.3
±0.3V,
ambient temperature T
MIN
< T
A
< T
MAX
. Typical values are at V
CC
= 3.3,
ambient temperature T
A
= +25ºC.
PARAMETERS
SYM
MIN
TYP
MAX
125
I
A,B
-100
T
TS
T
TSH
165
15
ºC
ºC
µA
UNITS
CONDITIONS
V
IN
= +12V
V
IN
= -7V
Input Current (A and B)
Half Duplex
Thermal-Shutdown Threshold
Thermal Shutdown Hysteresis
RECEIVER
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis
RO Output High Voltage
RO Output Low Voltage
Tri-State Output Current at
Receiver
Receiver Input Resistance
Receiver Ouput Short-Circuit
Current
SUPPLY CURRENT
DE = GND
V
CC
= GND or 3.6
V
TH
∆
V
TH
V
OH
V
OL
I
OZR
R
IN
I
OZR
-200
-125
15
-50
mV
mV
V
-7V
≤
V
CM
≤
12V
Va + Vb = 0V
I
O
= -1mA
I
O
= 1mA
0
≤
V
O
≤
V
CC
-7V
≤
V
CM
≤
12V
0V
≤
V
RO
≤
V
CC
Vcc -
0.6
0.4
+/-1
96
±8
±60
V
µA
k
Ω
mA
0.8
Supply Current
I
CC
0.8
0.8
Supply Current in Shutdown
mode
ESD PROTECTION
±15
ESD Protection for Y, Z, A, and B
±15
±8
I
SHDN
0.05
1.5
1.5
1.5
1
µA
mA
No Load, RE = 0, DE = V
CC
No Load, RE = V
CC
, DE = V
CC
No Load, RE = 0, DE = 0
RE = V
CC
, DE = GND
Human Body Model
kV
Air Gap (IEC 1000-4-2)
Contact (IEC 1000-4-2)
Date: 02/09/05
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2005 Sipex Corporation
3
DRIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V
CC
= +3.3
±0.3V,
ambient temperature T
MIN
< T
A
< T
MAX
. Typical values are at V
CC
= 3.3,
ambient temperature T
A
= +25ºC.
SP3070E, SP3071E & SP3072E DRIVER SWITCHING CHARACTERISTICS
PARAMETER
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
Driver Differential Output Skew
(t
DPLH
- t
DPHL
)
Maximum Data Rate
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
Driver Enable from Shutdown to
Output Low
Time to Shutdown
t
DZH
t
DZL
t
DLZ
t
DHZ
t
DZH(SHDN)
t
DZL(SHDN)
t
SHDN
SYMBOL
t
DPLH
t
DPHL
t
DR,
t
DF
t
DSKEW
MIN.
250
250
350
-
250
-
-
-
-
-
-
50
TYP.
-
-
-
-
-
-
-
-
-
-
-
200
MAX.
1500
1500
1600
200
-
2500
2500
100
100
5500
5500
600
UNITS
ns
ns
ns
ns
kbps
ns
ns
ns
ns
ns
ns
ns
Figure 4
Figure 5
Figure 5
Figure 4
Figure 4
Figure 5
CONDITIONS
C
L
= 50pF, R
L
= 54
Ω
,
Figure 2 & 3
C
L
= 50pF, R
L
= 54
Ω
,
Figure 2 & 3
C
L
= 50pF, R
L
= 54
Ω
,
Figure 2 & 3
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V
CC
= +3.3
±0.3V,
ambient temperature T
MIN
< T
A
< T
MAX
. Typical values are at V
CC
= 3.3,
ambient temperature T
A
= +25ºC.
Receiver Switching Characteristics SP3070, SP3071 & SP3072
PARAMETER
Receiver Propagation Delay
Receiver Output Skew (t
DPLH
- t
DPHL
)
Data Rate
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
Receiver Enable from Shutdown to
Outtput Low
t
RZH
t
RZL
t
RLZ
t
RHZ
t
RZH(SHDN)
t
RZL(SHDN)
SYMBOL
t
RPLH
t
RPHL
t
RSKEW
MIN.
-
-
-
250
-
-
-
-
-
-
TYP.
-
-
-
-
-
-
-
-
-
-
MAX.
200
200
30
-
50
50
100
100
4000
4000
UNITS
ns
ns
ns
kbps
ns
ns
ns
ns
ns
ns
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
C
L
= 15pF, Figure 6 & 7
C
L
= 15pF, Figure 6 & 7
CONDITIONS
Date: 02/09/05
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2005 Sipex Corporation
4
DRIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V
CC
= +3.3
±0.3V,
ambient temperature T
MIN
< T
A
< T
MAX
. Typical values are at V
CC
= 3.3,
ambient temperature T
A
= +25ºC.
SP3073E, SP3074E & SP3075E DRIVER SWITCHING CHARACTERISTICS
PARAMETER
Driver Propagation Delay
Driver Differential Output Rise or
Fall Time
Driver Differential Output Skew
(t
DPLH
- t
DPHL
)
Data Rate
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
Driver Enable from Shutdown to
Output Low
Time to Shutdown
t
DZH
t
DZL
t
DLZ
t
DHZ
t
DZH(SHDN)
t
DZL(SHDN)
t
SHDN
SYMBOL
t
DPLH
t
DPHL
t
DR,
t
DF
t
DSKEW
MIN.
180
180
200
-
500
-
-
-
-
-
-
50
TYP.
-
-
-
-
-
-
-
-
-
-
-
200
MAX.
800
800
800
100
-
2500
2500
100
100
4500
4500
600
UNITS
ns
ns
ns
ns
kbps
ns
ns
ns
ns
ns
ns
ns
Figure 4
Figure 5
Figure 5
Figure 4
Figure 4
Figure 5
CONDITIONS
C
L
= 50pF, R
L
= 54
Ω
,
Figure 2 & 3
C
L
= 50pF, R
L
= 54
Ω
,
Figure 2 & 3
C
L
= 50pF, R
L
= 54
Ω
,
Figure 2 & 3
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V
CC
= +3.3
±0.3V,
ambient temperature T
MIN
< T
A
< T
MAX
. Typical values are at V
CC
= 3.3,
ambient temperature T
A
= +25ºC.
Receiver Switching Characteristics SP3073, SP3074 & SP3075
PARAMETER
Receiver Propagation Delay
Receiver Output Skew (t
DPLH
- t
DPHL
)
Maximum Data Rate
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
Receiver Enable from Shutdown to
Outtput Low
Time to Shutdown
Date: 02/09/05
SYMBOL
t
RPLH
t
RPHL
t
RSKEW
MIN.
-
-
-
500
TYP.
-
-
-
-
-
-
-
-
-
-
200
MAX.
200
200
30
-
50
50
50
50
4000
4000
600
UNITS
ns
ns
ns
kbps
ns
ns
ns
ns
ns
ns
ns
CONDITIONS
C
L
= 15pF, Figure 6 & 7
C
L
= 15pF, Figure 6 & 7
t
RZH
t
RZL
t
RLZ
t
RHZ
t
RZH(SHDN)
t
RZL(SHDN)
t
SHDN
-
-
-
-
-
-
50
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
SP307XE 3.3V, 15kV ESD-Protected RS-485/RS422 Transceivers
© Copyright 2005 Sipex Corporation
5
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