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Datasheet> All Categories > Analog mixed-signal IC> Drivers and interfaces> SP1485ECP-L
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SP1485ECP-L

Description
LINE TRANSCEIVER, PDIP8, LEAD FREE, PLASTIC, DIP-8
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size841KB，12 Pages
ManufacturerRochester Electronics
Websitehttps://www.rocelec.com/
Environmental Compliance  
Download Datasheet Parametric Compare View All

SP1485ECP-L Overview

LINE TRANSCEIVER, PDIP8, LEAD FREE, PLASTIC, DIP-8

SP1485ECP-L Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerRochester Electronics
Parts packaging codeDIP
package instructionLEAD FREE, PLASTIC, DIP-8
Contacts8
Reach Compliance Codeunknown
Differential outputYES
Number of drives1
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-422; EIA-485
JESD-30 codeR-PDIP-T8
JESD-609 codee3
length9.5885 mm
Humidity sensitivity levelNOT APPLICABLE
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT APPLICABLE
Certification statusCOMMERCIAL
Maximum receive delay50 ns
Number of receiver bits1
Maximum seat height5.334 mm
Maximum supply voltage5.25 V
Minimum supply voltage4.75 V
Nominal supply voltage5 V
surface mountNO
technologyBICMOS
Temperature levelCOMMERCIAL
Terminal surfaceTIN
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT APPLICABLE
maximum transmission delay30 ns
width7.62 mm

SP1485ECP-L Preview

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SP1485E
Enhanced Low Power Half-Duplex
RS-485 Transceivers
■
■
■
■
+5V supply
20 Mbps Data Rate
Low Power BiCMOS
Driver/Receiver Enable for Multi-Drop
configurations
■
Enhanced ESD Specifications:
+15KV Human Body Model
+15KV IEC1000-4-2 Air Discharge
+8KV IEC1000-4-2 Contact Discharge
RO 1
R
8
V
CC
B
RE 2
7
DE 3
6
A
D
DI 4
SP485
Top View
5
GND
SP1485E
Pinout (Top View)
Now Available in Lead Free Packaging
DESCRIPTION
The
SP1485E
is a half-duplex transceiver that meets the specifications of RS-485 and RS-
422 serial protocols with enhanced ESD performance. The ESD tolerance has been improved
on this device to over +15KV for both Human Body Model and IEC1000-4-2 Air Discharge
Method. This device is pin-to-pin compatible with Sipex's SP485 devices as well as popular
industry standards. As with the original version, the
SP1485E
features Sipex's BiCMOS
design allowing low power operation without sacrificing performance. The
SP1485E
meets
the requirements of the RS-485 and RS-422 protocols up to 20Mbps under load.
BLOCK DIAGRAM
RO 1
RE 2
DE 3
DI 4
R
8 Vcc
7B
6A
D
SP1485E
5 GND
Date: 06/14/05
SP1485E Low Power Half-Duplex RS485 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
.............................................................................+7VInput Voltages
Logic...........................................................................-0.3V to (V
CC
+0.5V)
Drivers.......................................................................-0.3V to (V
CC
+0.5V)
Receivers.......................................................................................
±15V
Output Voltages
Logic........................................................-0.3V to (V
CC
+0.5V)
Drivers......................................................................
±15V
Receivers............................................-0.3V to (V
CC
+0.5V)
Storage Temperature.......................................................-65˚C to +150˚C
Power Dissipation per Package
8-pin NSOIC (derate 6.60mW/
o
C above +70
o
C)...........................550mW
8-pin PDIP (derate 11.8mW/
o
C above +70
o
C)............................1000mW
ELECTRICAL CHARACTERISTICS
T
MIN
to T
MAX
and V
CC
= 5V
±
5% unless otherwise noted.
PARAMETERS
SP1485E DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
Differential Output Voltage
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
Driver Short-Circuit Current
V
OUT
= HIGH
V
OUT
= LOW
SP1485E DRIVER
AC Characteristics
Maximum Data Rate
Driver Input to Output
MIN.
TYP.
MAX.
UNITS
CONDITIONS
3.5
2
1.5
V
CC
V
CC
V
CC
0.2
3
Volts
Volts
Volts
Unloaded; R =
∞
;
see Figure 1
with load; R = 50Ω; (RS-422);
see Figure 1
with load; R = 27Ω; (RS-485);
see Figure 1
Volts
Volts
Volts
Volts
µA
mA
mA
R = 27Ω or R = 50Ω;
see Figure 1
R = 27Ω or R = 50Ω;
see Figure 1
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
-7V
≤
V
O
≤
+12V
-7V
≤
V
O
≤
+12V
2.0
0.8
±10
±250
±250
20
10
20
30
Mbps
ns
RE = 5V, DE = 5V; R
DIFF
= 54
t
PHL
; R
DIFF
= 54Ω, C
L1
= C
L2
100pF;closed
see Figures 3 and 5
Driver Skew
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
3
8
40
40
40
40
5
20
70
70
70
70
ns
ns
ns
ns
ns
ns
see Figures 3 and 5,
t
SKEW
= | t
DPLH
- t
DPHL
|
From 10% to 90%; R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF;
see
Figures 3 &
6
C
L
= 100pF;
see Figures 4 & 6;
S
2
closed
C
L
= 100pF;
see Figures 4 & 6;
S
1
closed
C
L
= 100pF;
see Figures 4 & 6;
S
1
closed
C
L
= 100pF;
see Figures 4 & 6;
S
2
closed
Date: 06/14/05
SP1485E Low Power Half-Duplex RS485 Transceivers
© Copyright 2005 Sipex Corporation
2
ELECTRICAL CHARACTERISTICS
T
MIN
to T
MAX
and V
CC
= 5V
±
5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
SP1485E RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
Differential Input Threshold
-0.4
(SP1485EMN ONLY)
Input Hysteresis
Output Voltage High
3.5
Output Voltage Low
Three-State (High Impedance)
Output Current
Input Resistance
12
Input Current (A, B); V
IN
= 12V
Input Current (A, B); V
IN
= -7V
Short-Circuit Current
7
SP1485E RECEIVER
AC Characteristics
Maximum Data Rate
20
Receiver Input to Output
Diff. Receiver Skew It
PLH
-t
PHL
I
Receiver Enable to
Output Low
Receiver Enable to
Output High
Receiver Disable from Low
Receiver Disable from High
POWER REQUIREMENTS
Supply Voltage
Supply Current
SP1485E
No Load
15
+0.2
+0.4
20
0.4
±1
15
+1.0
-0.8
95
Volts
Volts
mV
Volts
Volts
µA
kΩ
mA
mA
mA
-7V
≤
V
CM
≤
+12V
-7V
≤
V
CM
≤
+12V
V
CM
= 0V
I
O
= -4mA, V
ID
= +200mV
I
O
= +4mA, V
ID
= -200mV
0.4V
≤
V
O
≤
2.4V; RE = 5V
-7V
≤
V
CM
≤
+12V
DE = 0V, V
CC
= 0V or 5.25V, V
IN
= 12V
DE = 0V, V
CC
= 0V or 5.25V, V
IN
= -7V
0V
≤
V
O
≤
V
CC
RE = 0V, DE = 0V
t
PHL
; R
DIFF
= 54Ω,
C
L1
= C
L2 =
100pF;
Figures 3 & 7
R
DIFF
= 54Ω; C
L1
= C
L2
= 100pF;
Figures 3 & 7
C
RL
= 15pF;
Figures 2 & 8;
S
1
closed
C
RL
= 15pF;
Figures 2 & 8;
S
2
closed
C
RL
= 15pF;
Figures 2 & 8;
S
1
closed
C
RL
= 15pF;
Figures 2 & 8;
S
2
closed
Mbps
40
5
50
ns
ns
45
45
45
45
70
70
70
70
ns
ns
ns
ns
+4.75
+5.25
Volts
900
600
µA
µA
RE, DI = 0V or V
CC
; DE = V
CC
RE = 0V, DI = 0V or 5V; DE = 0V
ENVIRONMENTAL
AND MECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
(_M_)
Storage Temperature
Package
Plastic DIP (_P)
NSOIC (_N)
0
-40
-40
-65
+70
+85
+125
+150
°C
°C
°C
°C
Date: 06/14/05
SP1485E Low Power Half-Duplex RS485 Transceivers
© Copyright 2005 Sipex Corporation
3
PIN FUNCTION
RO 1
R
8
V
CC
Pin 1 – RO – Receiver Output.
Pin 2 – RE – Receiver Output Enable Active LOW.
RE 2
7
B
Pin 3 – DE – Driver Output Enable Active HIGH.
Pin 4 – DI – Driver Input.
Pin 5 – GND – Ground Connection.
DE 3
6
A
D
DI 4
SP485
Top View
5
GND
Pin 6 – A – Driver Output/Receiver Input
Non-inverting.
Pin 7 – B – Driver Output/Receiver Input Inverting.
Pin 8 – Vcc – Positive Supply 4.75V<Vcc< 5.25V.
SP1485E
Pinout (Top View)
A
R
V
OD
R
B
Figure 1. RS-485 Driver DC Test Load Circuit
V
OC
Receiver
Output
Test Point
C
RL
1k
S
1
1k
V
CC
S
2
Figure 2. Receiver Timing Test Load Circuit
DI
A
B
C
L1
R
DIFF
C
L2
A
B
RO
15pF
Output
Under C
L
Test
500
S
1
V
CC
S
2
Figure 4. RS-485 Driver Timing Test Load #2 Circuit
Figure 3. RS-485 Driver/Receiver Timing Test Circuit
+3V
DI
0V
DRIVER
OUTPUT
B
A
V
O
1/2V
O
f = 1MHz; t
R
< 1.0ns; t
F
< 1.0ns
1.5V
t
PLH
t
PHL
1/2V
O
t
DPLH
t
DPHL
1.5V
DIFFERENTIAL V
O
+
OUTPUT 0V
V
A
– V
B
V
O
–
t
SKEW =
| t
DPLH -
t
DPHL
|
Figure 5. Driver Propagation Delays
Date: 06/14/05
t
R
t
F
SP1485E Low Power Half-Duplex RS485 Transceivers
© Copyright 2005 Sipex Corporation
4
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SP1485ECP-L Related Products

SP1485ECP-L SP1485EEP-L
Description LINE TRANSCEIVER, PDIP8, LEAD FREE, PLASTIC, DIP-8 LINE TRANSCEIVER, PDIP8, LEAD FREE, PLASTIC, DIP-8
Is it lead-free? Lead free Lead free
Is it Rohs certified? conform to conform to
Maker Rochester Electronics Rochester Electronics
Parts packaging code DIP DIP
package instruction LEAD FREE, PLASTIC, DIP-8 LEAD FREE, PLASTIC, DIP-8
Contacts 8 8
Reach Compliance Code unknown unknown
Differential output YES YES
Number of drives 1 1
Input properties DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit type LINE TRANSCEIVER LINE TRANSCEIVER
Interface standards EIA-422; EIA-485 EIA-422; EIA-485
JESD-30 code R-PDIP-T8 R-PDIP-T8
JESD-609 code e3 e3
length 9.5885 mm 9.5885 mm
Humidity sensitivity level NOT APPLICABLE NOT APPLICABLE
Number of functions 1 1
Number of terminals 8 8
Maximum operating temperature 70 °C 85 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP DIP
Package shape RECTANGULAR RECTANGULAR
Package form IN-LINE IN-LINE
Peak Reflow Temperature (Celsius) NOT APPLICABLE NOT APPLICABLE
Certification status COMMERCIAL COMMERCIAL
Maximum receive delay 50 ns 50 ns
Number of receiver bits 1 1
Maximum seat height 5.334 mm 5.334 mm
Maximum supply voltage 5.25 V 5.25 V
Minimum supply voltage 4.75 V 4.75 V
Nominal supply voltage 5 V 5 V
surface mount NO NO
technology BICMOS BICMOS
Temperature level COMMERCIAL INDUSTRIAL
Terminal surface TIN TIN
Terminal form THROUGH-HOLE THROUGH-HOLE
Terminal pitch 2.54 mm 2.54 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature NOT APPLICABLE NOT APPLICABLE
maximum transmission delay 30 ns 30 ns
width 7.62 mm 7.62 mm

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