ST3485EI [STMICROELECTRONICS]
3.3 V powered, 15 kV ESD protected, up to 12 Mbps RS-485/RS-422 transceiver;
| 型号： | ST3485EI |
| 厂家： | 
ST |
| 描述： | 3.3 V powered, 15 kV ESD protected, up to 12 Mbps RS-485/RS-422 transceiver |
| 文件： | 总24页 (文件大小：441K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ST3485EB, ST3485EC,
ST3485EI, ST3485EIY
3.3 V powered, 15 kV ESD protected, up to 12 Mbps RS-485/
RS-422 transceiver
Datasheet - production data
Current limiting and thermal shutdown for
driver overload protection
Guaranteed high receiver output state for
floating inputs with no signal present
Allow up to 64 transceivers on the bus
Available in SO8 package
Automotive grade (ST3485EIY)
Description
The ST3485EB/EC/EI/EIY device is ±15 kV ESD
protected, 3.3 V low power transceiver for RS-
485 and RS-422 communications. The device
contains one driver and one receiver in half
duplex configuration.
Features
ESD protection
±15 kV IEC 61000-4-2 air discharge
±8 kV IEC 61000-4-2 contact discharge
The ST3485E device transmits and receives at a
guaranteed data rate of at least 12 Mbps.
Operate from a single 3.3 V supply - no
charge pump required
All transmitter outputs and receiver inputs are
protected to ±15 kV IEC 61000-4-2 air discharge.
Interoperable with 5 V logic
1 µA low current shutdown mode max.
Guaranteed 12 Mbps data rate
-7 to 12 V common mode input voltage
range
The driver is short-circuit current limited and is
protected against excessive power dissipation by
thermal shutdown circuitry that places the driver
outputs into a high impedance state.
Half duplex versions available
Industry standard 75176 pinout
Table 1: Device summary
Order code
ST3485ECDR
ST3485EBDR
ST3485EIDT
ST3485EIYDT
Temp. range
Package
Packing
0 to 70 °C
-40 to 85 °C
SO8 (tape and reel)
2500 parts per reel
-40 to 125 °C
October 2017
DocID9102 Rev 11
1/24
www.st.com
This is information on a product in full production.
Contents
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Contents
1
2
3
4
5
6
Pin configuration.............................................................................3
Truth tables......................................................................................4
Maximum ratings.............................................................................5
Electrical characteristics ................................................................6
Test circuits and typical characteristics......................................10
Package information .....................................................................19
6.1
6.2
SO8 package information................................................................19
SO8 tape and reel information ........................................................20
7
8
Ordering information.....................................................................21
Revision history ............................................................................22
2/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Pin configuration
1
Pin configuration
Figure 1: Pin connections
RO
RE
DE
DI
1
2
3
4
8
7
6
5
VCC
B
A
GND
Table 2: Pin description
Name and function
Pin n°
Symbol
Receiver output. If A > B by 200 mV, RO will be high; if A < B by 200
mV, RO will be low.
1
RO
Receiver output enable. RO is enabled when RE is low; RO is high
RE
2
impedance when RE is high. If RE is high and DE is low, the
device will enter a low power shutdown mode.
Driver output enable. The driver outputs are enabled by bringing DE
high. They are high impedance when DE is low. If RE is high DE is
3
4
DE
DI
low, the device will enter a low-power shutdown mode. If the driver
outputs are enabled, the part functions as line driver, while they are
high impedance, it functions as line receivers if RE is low.
Driver input. A low on DI forces output A low and output B high.
Similarly, a high on DI forces output A high and output B low.
5
6
7
8
GND
A
Ground.
Non-inverting receiver input and non-inverting driver output.
Inverting receiver input and inverting driver output.
Supply voltage: VCC = 3 V to 3.6 V.
B
VCC
DocID9102 Rev 11
3/24
Truth tables
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
2
Truth tables
Table 3: Truth table (driver)
Outputs
Inputs
Mode
RE
DE
DI
B
A
H
L
L
H
L
X
H
H
Normal
L
L
X
Z
Z
H
Shutdown
Note: X = “don’t care”; Z = high impedance
Table 4: Truth table (receiver)
Inputs
Output
Mode
RE
DE
A-B
RO
≥ 0.2 V
≤ -0.2 V
Inputs open
X
H
L
L
Normal
L
H
Z
H
Shutdown
Note: X = “don’t care”; Z = high impedance
4/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Maximum ratings
3
Maximum ratings
Absolute maximum ratings are those values beyond which damage to the device may
occur. Functional operation under these condition is not implied.
Table 5: Absolute maximum ratings
Symbol
Parameter
Value
Unit
VCC
Supply voltage
7
Control input voltage ( RE , DE)
VI
-0.3 to 7
VDI
VDO
VRI
Driver input voltage (DI)
-0.3 to 7
±14
V
Driver output voltage (A, B)
Receiver input voltage (A, B)
Receiver output voltage (RO)
±14
VRO
-0.3 to (VCC + 0.3)
HBM: human body model for the line inputs
(A and B) (1)
12
4
HBM: human body model for the logic
inputs (DI, DE, RE ) (1)
ESD
kV
HBM: human body model for all other pins
2
(1)
CDM: charged device model (2)
1.5
Notes:
(1)Human body model: 100 pF discharged through a 1.5 kΩ resistor between two pins of the device, done for
all couples of pin combinations with other pins floating.
(2)Charged device model: all pins plus package are charged together to the specified voltage and then
discharged directly to ground.
DocID9102 Rev 11
5/24
Electrical characteristics
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
4
Electrical characteristics
Table 6: Electrical characteristics (VCC = 3 V to 3.6 V, TA = 0 to 70 °C for ST3485ECDR, TA = -
40 to 85 °C for ST3485EBDR, TA = -40 to 125 °C for ST3485EIDT and ST3485EIYDT, unless
otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
Test conditions
DE = VCC
Min.
Typ.
Max.
Unit
,
RE = 0 V
or VCC
1.3
2.2
ISUPPLY
VCC power supply current
No load, DI = 0 V or VCC
mA
—
DE = 0 V,
RE = 0 V
1.2
1.9
1
DE = 0 V, RE = VCC, DI = 0 V or VCC
ISHDN
Shutdown supply current
0.002
µA
Table 7: Logic input electrical characteristics (VCC = 3 V to 3.6 V, TA = 0 to 70 °C for
ST3485ECDR, TA = -40 to 85 °C for ST3485EBDR, TA = -40 to 125 °C for ST3485EIDT and
ST3485EIYDT, unless otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
DE, DI, RE
DE, DI, RE
DE, DI, RE
VIL
Input logic threshold low
1.3
0.8
V
VIH
IIN1
Input logic threshold high
Logic input current
2
±2.0
µA
VIN = 12 V
VIN = -7 V
1
IIN2
Input current (A, B)
DE = 0 V, VCC= 0 or 3.6 V
mA
-0.8
6/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Electrical characteristics
Table 8: Transmitter electrical characteristics (VCC = 3 V to 3.6 V, TA = 0 to 70 °C for
ST3485ECDR, TA = -40 to 85 °C for ST3485EBDR, TA = -40 to 125 °C for ST3485EIDT and
ST3485EIYDT, unless otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
Test conditions
RL= 100 Ω (RS-422) (Figure 2)
RL= 54 Ω (RS-485) (Figure 2)
RL= 60 Ω (RS-485) (Figure 3)
Min. Typ. Max. Unit
2
VOD
Differential drive output
1.5
1.5
Change in magnitude of
driver differential output
voltage for
complementary output
states (1)
∆VOD
RL= 54 Ω or 100 Ω (Figure 2)
0.2
V
—
Driver common mode
output voltage
VOC
RL= 54 Ω or 100 Ω (Figure 2)
RL= 54 Ω or 100 Ω (Figure 2)
3
Change in magnitude of
driver common mode
output voltage(1)
∆VOC
0.2
Driver short-circuit output
current
IOSD
±250
mA
Notes:
(1)∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Table 9: Receiver electrical characteristics (VCC = 3 V to 3.6 V, TA = 0 to 70 °C for
ST3485ECDR, TA = -40 to 85 °C for ST3485EBDR, TA = -40 to 125 °C for ST3485EIDT and
ST3485EIYDT, unless otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
VTH
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Receiver differential
threshold voltage
VCM = -7 V to 12 V, DE = 0
-0.2
0.2
V
∆VTH
VOH
Receiver input hysteresis VCM = 0 V
Receiver output high
70
mV
IOUT = -4 mA, VID = 200 mV (Figure 4)
2
voltage
V
Receiver output low
voltage
VOL
IOUT = 4 mA, VID = -200 mV (Figure 4)
0.4
±1
3-state (high impedance)
output current at receiver
IOZR
RRIN
IOSR
VCC = 3.6 V, VO = 0 V to VCC
µA
kΩ
mA
Receiver input resistance VCM = -7 V to 12 V
24
7
Receiver short-circuit
VRO = 0 V to VCC
current
60
DocID9102 Rev 11
7/24
Electrical characteristics
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Table 10: Driver switching characteristics (VCC = 3 V to 3.6 V, TA = 0 to 70 °C for
ST3485ECDR, TA = -40 to 85 °C for ST3485EBDR, TA = -40 to 125 °C for ST3485EIDT and
ST3485EIYDT, unless otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
DR
Maximum data rate
12
15
Mbps
RL= 60 Ω, CL = 15 pF (Figure 5 and
Figure 6)
tDD
tTD
Differential output delay
18
12
18
30
20
30
Differential output
transition time
RL= 60 Ω, CL = 15 pF (Figure 5 and
Figure 6)
RL= 27 Ω, CL = 15 pF (Figure 9 and
Figure 10)
tPLH tPHL
Propagation delay
|tPLH - tPHL| driver
RL= 27 Ω, CL = 15 pF (Figure 9 and
Figure 10)
tPDS
propagation delay skew
2
5
(1)
tPZL
tPZH
tPHZ
tPLZ
Output enable time
Output enable time
Output disable time
Output disable time
RL= 110 Ω (Figure 11 and Figure 12)
RL= 110 Ω (Figure 7 and Figure 8)
RL= 110 Ω (Figure 7 and Figure 8)
RL= 110 Ω (Figure 11 and Figure 12)
19
30
19
30
35
50
35
50
ns
Differential output delay
skew
tSKEW
tPSH
tPSL
1
3
Driver enable from
shutdown to output high
RL = 110 Ω (Figure 7 and Figure 8)
RL = 110 Ω (Figure 11 and Figure 12)
30
19
50
35
Driver enable from
shutdown to output low
Notes:
(1)Measured on |tPLH(A)-tPHL(A)| and |tPLH(B)-tPHL(B)|.
8/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Electrical characteristics
Table 11: Receiver switching characteristics (VCC = 3 V to 3.6 V, TA = 0 to 70 °C for
ST3485ECDR, TA = -40 to 85 °C for ST3485EBDR, TA = -40 to 125 °C for ST3485EIDT and
ST3485EIYDT, unless otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VID = 0 V to 3 V, CL = 15 pF (Figure 13
and Figure 14)
tRPLH, tRPHL Propagation delay
30
50
|tRPLH - tRPHL| receiver
tRPDS
VID = 0 V to 3 V, CL = 15 pF (Figure 13
and Figure 14)
1
3
propagation delay skew
Receiver output enable
time to low level
tPRZL
CL = 15 pF (Figure 15 and Figure 17)
CL = 15 pF (Figure 15 and Figure 16)
CL = 15 pF (Figure 15 and Figure 18)
CL = 15 pF (Figure 15 and Figure 19)
10
10
10
10
20
20
20
20
Receiver output enable
tPRZH
time to high level
ns
Receiver output disable
tPRHZ
—
time from high level
Receiver output disable
tPRLZ
time from low level
Receiver output enable
tPRSH
time from shutdown to
high level
CL = 15 pF (Figure 15 and Figure 16)
CL = 15 pF (Figure 15 and Figure 17)
10
20
20
40
Receiver output enable
time from shutdown to
low level
tPRSL
µs
Notes:
1. ∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes
state.
2. Measured on |tPLH(A) - tPHL(A)| and |tPLH(B) - tPHL(B)|.
3. The transceivers are put into shutdown by bring RE high and DE low. If the input are
in state for less than 80 ns, the part are guaranteed not to enter shutdown. If the inputs are
in this state for at least 300 ns, the parts are guaranteed to have entered shutdown.
DocID9102 Rev 11
9/24
Test circuits and typical characteristics
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
5
Test circuits and typical characteristics
Figure 2: Driver and VOC test load
R
D
L
2
V
OD
R
L
V
CC
V
2
OC
Figure 3: Driver VOD with varying common mode voltage test load
375 Ω
V
= -7 to 12 V
CM
D
V
R
OD
L
V
CC
375 Ω
Figure 4: Receiver VOH and VOL test circuit
V
ID
R
V
0 V
I
(+) V
I
(-)
OL
OL OH
OL
10/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Test circuits and typical characteristics
Figure 5: Drive differential output delay transition time test circuit
(1)
OUT
R
= 60 Ω
D
IN
L
(2)
C
C
L
= 15 pF
L
V
CC
1. The input pulse is supplied by a generator with the following characteristics: PRR =
250 kHz, 50 % duty cycle, tr ≤ 6.0 ns, ZO = 50 Ω.
2. CL includes probe and stray capacitance
Figure 6: Drive differential output delay transition time waveform
3 V
IN
1.5 V
1.5 V
0 V
t
t
DD
DO
2 V
90 %
90 %
OUT
50 %
10 %
50 %
10 %
-2 V
t
t
TD
TD
Figure 7: Drive enable and disable times test circuit (pull-down configuration)
S1
0 V or 3 V
OUT
D
(2)
R
= 110 Ω
C
= 50 pF
L
L
(1)
IN
1. The input pulse is supplied by a generator with the following characteristics: PRR =
250 kHz, 50 % duty cycle, tr ≤ 6.0 ns.
2. CL includes probe and stray capacitance
DocID9102 Rev 11
11/24
Test circuits and typical characteristics
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Figure 8: Drive enable and disable times waveforms (pull-down configuration)
3 V
IN
1.5 V
1.5 V
0 V
V
t
(1)
PHZ
0.25 V
t
or t
PSH
PZH
OH
OUT
V
OM
0 V
1. tPZH is valid if the driver is initially disabled ( RE is high), tPSH is valid if the driver is
initially in shutdown mode (RE is low).
Figure 9: Drive propagation time test circuit
V
= (V
OH
= V )/2 = 1.5 V
OL
OM
R
= 27 Ω
L
S1
(1)
OUT
D
IN
(2)
C
= 15 pF
L
V
CC
1. The input pulse is supplied by a generator with the following characteristics: PRR =
250 kHz, 50 % duty cycle, tr ≤ 6.0 ns.
2. CL includes probe and stray capacitance
12/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Test circuits and typical characteristics
Figure 10: Drive propagation time waveform
3 V
IN
1.5 V
1.5 V
0 V
V
t
t
PHL
PLH
OH
OUT A
V
V
OM
OM
V
V
V
OL
OH
OL
t
t
PHL
OM
PLH
V
V
OM
OUT B
Figure 11: Drive enable and disable times test circuit (pull-up configuration)
V
CC
R
= 110 Ω
L
S1
OUT
0 V or 3 V
D
(2)
= 50 pF
C
L
(1)
IN
1. The input pulse is supplied by a generator with the following characteristics: PRR =
250 kHz, 50 % duty cycle, tr ≤ 6.0 ns.
2. CL includes probe and stray capacitance
DocID9102 Rev 11
13/24
Test circuits and typical characteristics
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Figure 12: Drive enable and disable times waveforms (pull-up configuration)
3 V
IN
1.5 V
1.5 V
0 V
V
t
(1)
or t
PSL
PLZ
t
PZL
CC
OUT
V
OM
0.25 V
V
OL
1. tPZL is valid if the driver is initially disabled ( RE is high), tPSL is valid if the driver is
initially in shutdown mode (RE is low).
Figure 13: Receiver propagation delay time test circuit
(1)
IN
OUT
R
V
ID
(2)
C
= 1.5 pF
L
1.5 V
0 V
1. The input pulse is supplied by a generator with the following characteristics: PRR =
250 kHz, 50 % duty cycle, tr ≤ 6.0 ns.
2. CL includes probe and stray capacitance
14/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Test circuits and typical characteristics
Figure 14: Receiver propagation delay time waveforms
3.0 V
0 V
IN
1.5 V
1.5 V
t
t
RPHL
RPLH
V
CC
OUT
V
V
OM
OM
V
= V /2
CC
0 V
OM
Figure 15: Receiver enable and disable times test circuit
OUT
1.5 V
S3
S1
V
CC
1 kΩ
-1.5 V
R
V
ID
S2
(2)
C
L
(1)
IN
1. The input pulse is supplied by a generator with the following characteristics: PRR =
250 kHz, 50 % duty cycle, tr ≤ 6.0 ns.
2. CL includes probe and stray capacitance
DocID9102 Rev 11
15/24
Test circuits and typical characteristics
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Figure 16: Receiver enable and disable times waveform (test 1)
3 V
S1 open
IN
S2 closed
S3 = 1.5 V
1.5 V
0 V
V
t
t
PRZH
PRSH
OH
OUT
1.5 V
0 V
Figure 17: Receiver enable and disable times waveform (test 2)
3 V
S1 closed
S2 open
S3 = -1.5 V
IN
1.5 V
0 V
V
t
t
PRZL
PRSL
CC
1.5 V
OUT
V
OL
Figure 18: Receiver enable and disable times waveform (test 3)
S1 open
3 V
S2 closed
S3 = 1.5 V
1.5 V
IN
0 V
V
t
PRHZ
- 0.25 V
OH
V
OH
OUT
0 V
16/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Test circuits and typical characteristics
Figure 19: Receiver enable and disable times waveform (test 4)
3 V
S1 closed
S2 open
S3 = -1.5 V
IN
1.5 V
t
0 V
V
PRLZ
CC
OUT
0.25 V
V
OL
Figure 20: Receiver output current vs. output low
voltage
Figure 21: Receiver output current vs. output high
voltage
Figure 22: Low level driver output capability
Figure 23: High level driver output capability
DocID9102 Rev 11
17/24
Test circuits and typical characteristics
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Figure 24: Receiver input characteristics
Figure 25: Driver short-circuit current (test 1)
Figure 26: Driver short-circuit current (test 2)
18/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Package information
6
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
6.1
SO8 package information
Figure 27: SO8 package outline
Table 12: SO8 mechanical data
Dimensions
Ref.
Millimeters
Typ.
Inches
Typ.
Min.
Max.
1.75
0.25
Min.
Max
0.069
0.010
A
A1
A2
b
0.10
1.25
0.28
0.17
4.80
5.80
3.80
0.004
0.049
0.011
0.007
0.189
0.228
0.150
0.48
0.23
5.00
6.20
4.00
0.019
0.010
0.197
0.244
0.157
c
D
4.90
6.00
3.90
1.27
0.193
0.236
0.154
0.050
E
E1
e
h
0.25
0.40
0.50
1.27
0.010
0.016
0.020
0.050
L
L1
k
1.04
0.040
0°
8°
0°
8°
ccc
0.10
0.004
DocID9102 Rev 11
19/24
Package information
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
6.2
SO8 tape and reel information
Figure 28: SO8 tape and reel outline
1. Drawing not to scale
Table 13: SO8 tape and reel mechanical data
Dimensions
Symbol
Min.
A
mm
Inches
Typ.
Typ.
Max.
330
Min.
Max.
12.992
0.519
C
D
12.8
20.2
60
13.2
0.504
0.795
2.362
N
T
22.4
8.5
5.9
2.3
4.1
8.1
0.882
0.335
0.232
0.090
0.161
0.319
—
—
Ao
Bo
Ko
Po
P
8.1
5.5
2.1
3.9
7.9
0.319
0.216
0.082
0.153
0.311
20/24
DocID9102 Rev 11
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
Ordering information
7
Ordering information
Table 14: Order codes
Order code
Temperature range
Package
Packaging
Marking
3485EC
3485EB
3485EI
ST3485ECDR
ST3485EBDR
ST3485EIDT
0 to 70 °C
-40 to 85 °C
SO8
Tape and reel
-40 to 125 °C
ST3485EIYDT(1)
-40 to 125 °C (automotive grade)
3485EIY
Notes:
(1)Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001
and Q 002 or equivalent.
DocID9102 Rev 11
21/24
Revision history
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
8
Revision history
Table 15: Document revision history
Changes
Mistake on table 12 tZL(SHDN) ms ==> µs.
Date
Revision
20-Jun-2005
2
Remove (TRUE) on title, description has been updated in cover page. The
VTH and DVTH values are changed in table 10.
30-Aug-2005
3
07-Apr-2006
12-Nov-2007
4
5
Order codes updated.
Added Table 1.
Updated Features (added SO-8 package, replaced human body model by
±15 kV IEC 61000-4-2 air discharge and IEC 1000-4-2 by IEC 61000-4-2).
Updated Description (renamed device to ST3485EB/EC, replaced human
body model by ±15 kV IEC 61000-4-2 air discharge).
Removed ST3485ECN device from Table 1.
Updated title of Table 6, cross-references, replaced human body model
(HBM) by ±15 kV IEC 61000-4-2 air discharge and IEC 1000-4-2 by IEC
61000-4-2.
18-Dec-2013
6
Added notes below Table 9.
Updated Table 10 to Table 12 (updated data, cross-references).
Updated Figure 5 to Figure 16 (updated data, added notes below figures and
highlighted some parts of Figure 6 and Figure 12).
Removed DIP-8 package from Section 6: "Package information" and whole
document. Reformatted Section 6: "Package information" (added Figure 27,
Figure 28, Table 13 and Table 14, reversed order of figures and table).
Minor corrections throughout document.
Added part number ST3485EIY
Added order code ST3485EIYDT and pointed out in Features it is
automotive grade.
12-Jun-2015
15-Mar-2016
7
8
Table 7 and Table 9 through to Table 12: replaced TA = -40 to 85 °C with TA
= 0 to 70 °C (ST3485ECDR), TA = -40 to 85 °C (ST3485EBDR), and TA = -
40 to 125 °C (ST3485EIYDT).
Updated titles of figures 7, 8, 11, 12, 16, 17, 18, 19, 25, and 26
Table 5: added ESD information
Removed "Table 6: ESD performance: transmitter outputs, receiver inputs
(A, B)".
Added Section 7: "Ordering information"
Added new part number ST3485EI
Table 1: "Device summary": added information for new part number
ST3485EI.
Removed "Note" icons throughout datasheet
02-Aug-2016
25-Aug-2016
9
Section 4: "Electrical characteristics": updated TA information
Section 5: "Test circuits and typical characteristics": removed overline bar
concerning "RE is low" in note 1 of figures 8 and 12.
Table 14: "Order codes": added ST3485EIDT and updated footnote 1
(ST3485EIYDT now qualified).
Table 14: "Order codes": updated order codes ST3485EBDR and
ST3485ECDR.
10
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Revision history
Date
Revision
Changes
Updated Figure 20: "Receiver output current vs. output low voltage", Figure
21: "Receiver output current vs. output high voltage", Figure 24: "Receiver
input characteristics" and Figure 26: "Driver short-circuit current (test 2)".
26-Oct-2017
11
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相关型号：
ST3485EIYDT
3.3 V powered, 15 kV ESD protected, up to 12 Mbps RS-485/RS-422 transceiver, automotive grade
STMICROELECTR
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