ADM489A [ADI]
Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers; 全双工,低功耗,限摆率, EIA RS- 485收发器型号: | ADM489A |
厂家: | ADI |
描述: | Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers |
文件: | 总16页 (文件大小:232K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Full-Duplex, Low Power,
Slew Rate Limited, EIA RS-485 Transceivers
ADM488A/ADM489A
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Complies with ANSI TIA/EIA-485-A-1998 and
ISO 8482: 1987(E)
250 kbps data rate
ADM488A
A
R
RO
DI
B
Single 5 V 10% supply
−7 V to +12 V bus common-mode range
Connect up to 32 nodes on the bus
Reduced slew rate for low EM interference
Short-circuit protection
Z
Y
D
30 μA supply current
Figure 1. ADM488A
APPLICATIONS
ADM489A
Low power RS-485 and RS-422 systems
DTE-DCE interface
Packet switching
A
B
R
RO
RE
Local area networks
Data concentration
Data multiplexers
DE
DI
Z
Y
D
Integrated services digital network (ISDN)
Figure 2. ADM489A
GENERAL DESCRIPTION
Excessive power dissipation that is caused by bus contention or
output shorting is prevented by a thermal shutdown circuit. This
feature forces the driver output into a high impedance state if,
during fault conditions, a significant temperature increase is
detected in the internal driver circuitry.
The ADM488A and ADM489A are low power, differential line
transceivers suitable for communication on multipoint bus
transmission lines. They are intended for balanced data
transmission and comply with both RS-485 and RS-422
standards of the Electronics Industries Association (EIA). Both
products contain a single differential line driver and a single
differential line receiver, making them suitable for full-duplex
data transfer. The ADM489A contains an additional receiver
and driver enable control.
The receiver contains a fail-safe feature that results in a logic
high output state if the inputs are unconnected (floating).
The ADM488A/ADM489A are fabricated on BiCMOS, an
advanced mixed technology process combining low power
CMOS with fast switching bipolar technology.
The input impedance is 12 kΩ, allowing 32 transceivers to be
connected on the bus. The ADM488A/ADM489A operate from
a single 5 V 10% power supply.
The ADM488A/ADM489A are fully specified over the industrial
temperature range and are available in SOIC and MSOP packages.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks are theproperty of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2009 Analog Devices, Inc. All rights reserved.
ADM488A/ADM489A
TABLE OF CONTENTS
Typical Performance Characteristics..............................................8
Test Circuits........................................................................................9
Switching Characteristics.......................................................... 10
Theory of Operation .......................................................................11
Applications Information.............................................................. 13
Differential Data Transmission ................................................ 13
Cable and Data Rate................................................................... 13
Outline Dimensions....................................................................... 14
Ordering Guide .......................................................................... 15
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description......................................................................... 1
Functional Block Diagrams............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Specifications .................................................................. 4
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
REVISION HISTORY
10/09—Revision 0: Initial Version
Rev. 0 | Page 2 of 16
ADM488A/ADM489A
SPECIFICATIONS
VCC = 5 V 10%ꢀ all specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Symbol Min Typ Max Unit Test Conditions/Comments
DRIVER
Differential Output Voltage
VOD
5.0
5.0
5.0
5.0
0.2
3.0
0.2
V
V
V
V
V
V
V
R = ∞, see Figure 11
2.0
1.5
1.5
VCC = 5 V, R = 50 Ω (RS-422), see Figure 11
R = 27 Ω (RS-485), see Figure 11
VTST = –7 V to +12 V, see Figure 12, VCC = 5 V 5ꢀ
R = 27 Ω or 50 Ω, see Figure 11
R = 27 Ω or 50 Ω, see Figure 11
R = 27 Ω or 50 Ω
Δ|VOD| for Complementary Output States
Common-Mode Output Voltage
Δ|VOC| for Complementary Output States
Output Short-Circuit Current
VOUT
CMOS Input Logic Threshold Low
CMOS Input Logic Threshold High
Logic Input Current (DE, DI)
RECEIVER
VOC
250
0.8
mA
V
V
−7 V ≤ VO ≤ +12 V
VINL
VINH
1.4
1.4
2.0
1.0 μA
Differential Input Threshold Voltage
Input Voltage Hysteresis
Input Resistance
VTH
ΔVTH
−0.2
12
+0.2
V
−7 V ≤ VCM ≤ +12 V
VCM = 0 V
−7 V ≤ VCM ≤ +12 V
VIN = 12 V
70
mV
kΩ
mA
Input Current (A, B)
1
−0.8 mA
VIN = −7 V
Logic Enable Input Current (
CMOS Output Voltage Low
CMOS Output Voltage High
)
RE
1
μA
V
V
VOL
VOH
0.4
IOUT = +4.0 mA
IOUT = −4.0 mA
VOUT = GND or VCC
4.0
7
Short-Circuit Output Current
85
mA
Three-State Output Leakage Current
POWER SUPPLY CURRENT
1.0 μA
0.4 V ≤ VOUT ≤ 2.4 V
Outputs unloaded, receivers enabled
DE = 0 V (disabled)
DE = 5 V (enabled)
ICC
30
37
60
74
μA
μA
Rev. 0 | Page 3 of 16
ADM488A/ADM489A
TIMING SPECIFICATIONS
VCC = 5 V 10%. All specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Symbol
Min Typ Max Unit Test Conditions/Comments
DRIVER
Propagation Delay Input to Output
tPLH, tPHL
tSKEW
250
2000 ns
RL differential = 54 Ω, CL1 = CL2 =
100 pF, see Figure 15
RL differential = 54 Ω, CL1 = CL2 =
100 pF, see Figure 15
RL differential = 54 Ω, CL1 = CL2 =
100 pF, see Figure 15
Driver Output Skew
Driver Rise/Fall Time
100 800
ns
tDR, tDF
250
2000 ns
Driver Enable to Output Valid
Driver Disable Timing
Maximum Data Rate
RECEIVER
tZL, tZH
tLZ, tHZ
250
300
250
2000 ns
3000 ns
RL = 500 Ω, CL = 100 pF, see Figure 12
RL = 500 Ω, CL = 15 pF, see Figure 12
kbps
Propagation Delay Input to Output
Skew
Receiver Enable
tPLH, tPHL
|tPLH − tPHL
tEN1
250
2000 ns
ns
CL = 15 pF, see Figure 15
|
100
10
10
50
50
ns
ns
RL = 1 kΩ, CL = 15 pF, see Figure 14
RL = 1 kΩ, CL = 15 pF, see Figure 14
Receiver Disable
tEN2
Maximum Data Rate
250
kbps
Rev. 0 | Page 4 of 16
ADM488A/ADM489A
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating onlyꢀ functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Table 3.
Parameter
Rating
VCC
7 V
Inputs
Driver Input (DI)
Control Inputs (DE,
−0.3 V to VCC + 0.3 V
−0.3 V to VCC + 0.3 V
−14 V to +14 V
)
RE
ESD CAUTION
Receiver Inputs (A, B)
Outputs
Driver Outputs
Receiver Output
Power Dissipation 8-Lead SOIC
θJA, Thermal Impedance
−14 V to +12.5 V
−0.5 V to VCC + 0.5 V
520 mW
110°C/W
Power Dissipation 14-Lead SOIC
θJA, Thermal Impedance
800 mW
120°C/W
Operating Temperature Range
Industrial (AVersion)
Storage Temperature Range
−40°C to +85°C
−65°C to +150°C
Lead Temperature (Soldering, 10 sec) 300°C
Vapor Phase (60 sec)
Infrared (15 sec)
215°C
220°C
Rev. 0 | Page 5 of 16
ADM488A/ADM489A
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
V
1
2
3
4
8
7
6
5
A
B
Z
CC
ADM488A
TOP VIEW
(Not to Scale)
RO
DI
GND
Y
Figure 3. ADM488A Pin Configuration
Table 4. ADM488A Pin Function Descriptions
Pin No.
Mnemonic
Description
1
2
3
4
5
6
7
8
VCC
RO
DI
GND
Y
Z
B
A
Power Supply, 5 V 10ꢀ.
Receiver Output. When A > B by 200 mV, RO = high. If A < B by 200 mV, RO = low.
Driver Input. A logic low on DI forces Y low and Z high, whereas a logic high on DI forces Y high and Z low.
Ground Connection, 0 V.
Noninverting Driver, Differential Output Y.
Inverting Driver, Differential Output Z.
Inverting Receiver, Input B.
Noninverting Receiver, Input A.
Rev. 0 | Page 6 of 16
ADM488A/ADM489A
NC
RO
1
2
3
4
5
6
7
14
V
CC
1
2
3
4
5
10
RO
RE
V
CC
13 NC
9
8
7
6
A
B
Z
ADM489A
ADM489A
RE
12
11
10
9
A
TOP VIEW
TOP VIEW
DE
DE
(Not to Scale)
B
(Not to Scale)
DI
DI
Z
GND
GND
GND
Y
Y
8
NC
NC = NO CONNECT
Figure 5. ADM489A MSOP Pin Configuration
Figure 4. ADM489A SOIC_N Pin Configuration
Table 5. ADM489A Pin Function Descriptions
Pin No.
SOIC_N
1, 8, 13
2
3
MSOP
Mnemonic Description
N/A1
NC
RO
RE
No Connect. No connections are required to this pin.
Receiver Output. When enabled, if A > B by 200 mV, RO = high. If A < B by 200 mV, RO = low.
Receiver Output Enable. A low level enables the receiver output, RO. A high level places the
ADM489A in a high impedance state.
1
2
4
5
3
4
DE
DI
Driver Output Enable. A high level enables the driver differential outputs (Y and Z). A low level
places the ADM489A in a high impedance state.
Driver Input. When the driver is enabled, a logic low on DI forces Y low and Z high, whereas a
logic high on DI forces Y high and Z low.
6, 7
9
10
11
12
14
5
6
7
8
9
10
GND
Y
Z
B
A
Ground Connection, 0 V.
Noninverting Driver, Differential Output Y.
Inverting Driver, Differential Output Z.
Inverting Receiver, Input B.
Noninverting Receiver, Input A.
Power Supply, 5 V 10ꢀ.
VCC
1 N/A means not applicable.
Rev. 0 | Page 7 of 16
ADM488A/ADM489A
TYPICAL PERFORMANCE CHARACTERISTICS
45
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
40
35
30
25
20
15
10
5
0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
5.0
3.0
2.5
2.7
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
Figure 6. Output Current vs. Receiver Output Low Voltage
Figure 9. Output Current vs. Driver Output High Voltage
0
0
–2
–10
–20
–30
–40
–50
–60
–70
–80
–4
–6
–8
–10
–12
–14
–16
–18
–20
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
Figure 10. Output Current vs. Driver Differential Output Voltage
Figure 7. Output Current vs. Receiver Output High Voltage
90
80
70
60
50
40
30
20
10
0
0
0.5
1.0
1.5
2.0
2.5
OUTPUT VOLTAGE (V)
Figure 8. Output Current vs. Driver Output Low Voltage
Rev. 0 | Page 8 of 16
ADM488A/ADM489A
TEST CIRCUITS
V
CC
+1.5V
–1.5V
R
R
S1
R
L
S2
V
OD
RE
C
L
V
V
OUT
OC
RE IN
Figure 14. Receiver Enable/Disable Test Circuit
Figure 11. Driver Voltage Measurement Test Circuit
3V
DE
A
B
C
C
Y
Z
L1
L2
375Ω
RO
DI
RL
D
DIFF
R
RE
V
60Ω
375Ω
OD3
V
TST
Figure 12. Driver Enable/Disable Test Circuit
Figure 15. Driver/Receiver Propagation Delay Test Circuit
V
CC
A
R
L
0V OR 3V
DE IN
S1
S2
DE
B
C
L
V
OUT
Figure 13. Driver Voltage Measurement Test Circuit
Rev. 0 | Page 9 of 16
ADM488A/ADM489A
SWITCHING CHARACTERISTICS
V
CC
V
/2
V
/2
CC
CC
V
CC
0V
Z
tPLH
tPHL
0.5V
tZL
0.5V
CC
CC
DE
0V
1/2V
O
tLZ
2.3V
2.3V
V
O
Y
Y, Z
Y, Z
V
V
+ 0.5V
– 0.5V
OL
OH
V
V
OL
OH
+V
tZH
tHZ
O
90% POINT
90% POINT
V
= V – V
(Y) (Z)
DIFF
V
DIFF
–V
10% POINT
10% POINT
O
tDR
tDF
0V
Figure 16. Driver Propagation Delay, Rise/Fall Timing
Figure 18. Driver Enable/Disable Timing
0.7V
CC
CC
0.5V
tZL
0.5V
CC
CC
RE
0.3V
A – B
0V
0V
tLZ
1.5V
1.5V
RO
V
V
+ 0.5V
OL
tPLH
tPHL
OUTPUT LOW
OUTPUT HIGH
V
V
OL
OH
V
V
OH
OL
tZH
tHZ
tSKEW = |tPLH
– tPHL|
RO
1.5V
1.5V
– 0.5V
OH
RO
0V
Figure 17. Receiver Propagation Delay
Figure 19. Receiver Enable/Disable Timing
Rev. 0 | Page 10 of 16
ADM488A/ADM489A
THEORY OF OPERATION
The ADM488A/ADM489A are ruggedized RS-485 transceivers
that operate from a single 5 V supply. They contain protection
against radiated and conducted interference and are ideally suited
for operation in electrically harsh environments or where cables
can be plugged/unplugged. They are also immune to high RF
field strengths without special shielding precautions.
the slew rate is controlled by the ADM488A/ADM489A and
reflections are minimized.
The communications network can be extended to include
multipoint connections, as shown in Figure 22. As many as
32 transceivers can be connected to the bus.
Table 6 and Table 7 show the truth tables for transmitting and
receiving.
The ADM488A/ADM489A are intended for balanced data
transmission and comply with both EIA RS-485 and RS-422
standards. They contain a differential line driver and a differen-
tial line receiver, and are suitable for full-duplex data transmission.
Table 6. Transmitting Truth Table
Inputs
Outputs
RE
DE
DI
1
0
X1
X1
Z
0
1
Y
1
0
The input impedance on the ADM488A/ADM489A is 12 kΩ,
allowing up to 32 transceivers on the differential bus. The
ADM488A/ADM489A operate from a single 5 V 10% power
supply. A thermal shutdown circuit prevents excessive power
dissipation caused by bus contention or by output shorting.
This feature forces the driver output into a high impedance state
if, during fault conditions, a significant temperature increase is
detected in the internal driver circuitry.
X1
X1
0
1
1
0
0
High-Z
Hgh-Z
High-Z
High-Z
1
1 X is don’t care.
Table 7. Receiving Truth Table
Inputs
Output
The receiver contains a fail-safe feature that results in a logic
high output state if the inputs are unconnected (floating).
RE
DE
0
0
A to B
≥ +0.2 V
≤ −0.2 V
Inputs open circuit
X1
RO
1
0
0
0
The ADM488A/ADM489A can transmit at data rates up to
250 kbps. Figure 20 shows a typical application for the
ADM488A/ADM489A, a full-duplex link where data transfers
at rates of up to 250 kbps. A terminating resistor is shown at
both ends of the link. This termination is not critical because
0
1
0
0
1
High-Z
1 X is don’t care.
V
V
CC
CC
V
CC
ADM488A
ADM488A
A
B
Z
Y
Z
R
RO
DI
D
R
T
V
CC
B
A
R
T
DI
D
R
RO
Y
GND
GND
NOTES
1. MAXIMUM NUMBER OF NODES = 32.
Figure 20. ADM488A/ADM489A Full-Duplex Data Link
Rev. 0 | Page 11 of 16
ADM488A/ADM489A
MAXIMUM NUMBER OF NODES = 32
V
T
CC
MASTER
SLAVE
A
Y
Z
R
RO
RE
DE
DI
D
DI
R
B
Z
Y
DE
RE
RO
V
CC
R
B
A
T
D
R
ADM488A
ADM488A
A
B
Z
Y
A
B
Z
Y
SLAVE
SLAVE
ADM488A
ADM488A
R
R
D
D
RO RE DE DI
RO RE DE DI
NOTES
1. R IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE.
T
Figure 21. Typical RS-485 Full-Duplex Application
Rev. 0 | Page 12 of 16
ADM488A/ADM489A
APPLICATIONS INFORMATION
DIFFERENTIAL DATA TRANSMISSION
CABLE AND DATA RATE
Differential data transmission reliably transmits data at high
rates over long distances and through noisy environments.
Differential transmission nullifies the effects of ground shifts
and noise signals, which appear as common-mode voltages on
the line. Two main standards that specify the electrical charac-
teristics of transceivers used in differential data transmission
are approved by the EIA.
The transmission line of choice for RS-485 communications is a
twisted pair. Twisted pair cable tends to cancel common-mode
noise and causes cancellation of the magnetic fields generated
by the current flowing through each wire, thereby reducing the
effective inductance of the pair.
The ADM488A/ADM489A are designed for bidirectional data
communications on multipoint transmission lines. A typical
application with a multipoint transmission network is illustrated
in Figure 22. An RS-485 transmission line can have up to 32
transceivers on the bus. Only one driver can transmit at a par-
ticular time, but multiple receivers can be simultaneously enabled.
The RS-422 standard specifies data rates up to 10 Mbps and line
lengths up to 4000 ft. A single driver can drive a transmission
line with up to 10 receivers.
To cater to true multipoint communications, the RS-485 stan-
dard was defined to meet or exceed the requirements of RS-422.
It also allows up to 32 drivers and 32 receivers to be connected
to a single bus. An extended common-mode range of −7 V to
+12 V is defined. The most significant difference between the
RS-422 and RS-485 is that the RS-485 drivers can be disabled,
thereby allowing up to 32 receivers to be connected to a single
line. Only one driver should be enabled at a time, but the RS-485
standard contains additional specifications to guarantee device
safety in the event of line contention.
As with any transmission line, it is important to minimize reflec-
tions. This can be achieved by terminating the extreme ends of the
line using resistors equal to the characteristic impedance of the
line. Keep stub lengths of the main line as short as possible. A
properly terminated transmission line appears purely resistive
to the driver.
Table 8. Comparison of RS-422 and RS-485 Interface Standards
Specification
RS-422
RS-485
Transmission Type
Maximum Data Rate
Differential
10 Mbps
4000 ft.
2 V
Differential
10 Mbps
4000 ft.
1.5 V
54 Ω
12 kΩ minimum
200 mV
−7 V to +12 V
32/32
Maximum Cable Length
Minimum Driver Output Voltage
Driver Load Impedance
Receiver Input Resistance
Receiver Input Sensitivity
Receiver Input Voltage Range
Number of Drivers/Receivers per Line
RT
100 Ω
4 kΩ minimum
200 mV
−7 V to +7 V
1/10
RT
D
D
R
R
R
R
D
D
Figure 22. Typical RS-485 Network
Rev. 0 | Page 13 of 16
ADM488A/ADM489A
OUTLINE DIMENSIONS
3.10
3.00
2.90
10
1
6
5
5.15
4.90
4.65
3.10
3.00
2.90
PIN 1
IDENTIFIER
0.50 BSC
0.95
0.85
0.75
15° MAX
1.10 MAX
0.70
0.55
0.40
0.15
0.05
0.23
0.13
6°
0°
0.30
0.15
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187-BA
Figure 23. 10-Lead Mini Small Outline Package [MSOP]
(RM-10)
Dimensions shown in millimeters
5.00 (0.1968)
4.80 (0.1890)
8
1
5
4
6.20 (0.2441)
5.80 (0.2284)
4.00 (0.1574)
3.80 (0.1497)
0.50 (0.0196)
0.25 (0.0099)
1.27 (0.0500)
BSC
45°
1.75 (0.0688)
1.35 (0.0532)
0.25 (0.0098)
0.10 (0.0040)
8°
0°
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
1.27 (0.0500)
0.40 (0.0157)
0.25 (0.0098)
0.17 (0.0067)
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MS-012-AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 24. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
Rev. 0 | Page 14 of 16
ADM488A/ADM489A
8.75 (0.3445)
8.55 (0.3366)
8
7
14
1
6.20 (0.2441)
5.80 (0.2283)
4.00 (0.1575)
3.80 (0.1496)
1.27 (0.0500)
BSC
0.50 (0.0197)
0.25 (0.0098)
45°
1.75 (0.0689)
1.35 (0.0531)
0.25 (0.0098)
0.10 (0.0039)
8°
0°
COPLANARITY
0.10
SEATING
PLANE
1.27 (0.0500)
0.40 (0.0157)
0.51 (0.0201)
0.31 (0.0122)
0.25 (0.0098)
0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012-AB
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 25. 14-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-14)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Temperature
Package
Model
Range
Package Description
10-Lead Mini Small Outline Package [MSOP]
10-Lead Mini Small Outline Package [MSOP]
8-Lead Standard Small Outline Package, Narrow Body
[SOIC_N]
8-Lead Standard Small Outline Package, Narrow Body
[SOIC_N]
Option
RM-10
RM-10
R-8
Branding
F0F
F0F
ADM488ABRMZ1
ADM488ABRMZ-REEL71
ADM488ABRZ1
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
ADM488ABRZ-REEL71
−40°C to +85°C
R-8
ADM489ABRMZ1
ADM489ABRMZ-REEL71
ADM489ABRZ1
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
10-Lead Mini Small Outline Package [MSOP]
10-Lead Mini Small Outline Package [MSOP]
14-Lead Standard Small Outline Package, Narrow Body
[SOIC_N]
14-Lead Standard Small Outline Package, Narrow Body
[SOIC_N]
RM-10
RM-10
R-14
F0G
F0G
ADM489ABRZ-REEL71
−40°C to +85°C
R-14
1 Z = RoHS Compliant Part.
Rev. 0 | Page 15 of 16
ADM488A/ADM489A
NOTES
©2009 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D08498-0-10/09(0)
Rev. 0 | Page 16 of 16
相关型号:
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ADM489AR-REEL
5 V, Slew-Rate Limited, Low Power, 250 kbps, Full Duplex EIA RS-485 Transceiver (with DE/RE)
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