SN65LBC179ADG4 [TI]
LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS;
| 型号： | SN65LBC179ADG4 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS 驱动 |
| 文件： | 总18页 (文件大小：421K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN65LBC179A
SN75LBC179A
www.ti.com
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
Check for Samples: SN65LBC179A, SN75LBC179A
1
FEATURES
SN65LBC179AD (Marked as BL179A)
2
•
High-Speed Low-Power LinBiCMOS™ Circuitry
Designed for Signaling Rates(1) of up to 30
Mbps
SN65LBC179AP (Marked as 65LBC179A)
SN75LBC179AD (Marked as LB179A)
SN75LBC179AP (Marked as 75LBC179A)
(TOP VIEW)
•
•
Bus-Pin ESD Protection Exceeds 12 kV HBM
Very Low Disabled Supply-Current
Requirements . . . 700 μA Max
VCC
R
A
B
Z
Y
1
2
3
4
8
7
6
5
•
•
•
Common-Mode Voltage Range of –7 V to 12 V
D
Low Supply Current . . .15 mA Max
GND
Compatible With ANSI Standard TIA/EAI-485-A
and ISO8482: 1987(E)
LOGIC DIAGRAM (POSITIVE LOGIC)
•
•
Positive and Negative Output Current Limiting
Driver Thermal Shutdown Protection
8
2
A
B
R
D
7
(1)Signaling rate by TIA/EIA-485-A definition restrict transition times
to 30% of the bit length, and much higher signaling rates may be
achieved without this requirement as displayed in the TYPICAL
CHARACTERISTICS of this device.
5
6
3
Y
Z
DESCRIPTION
The SN65LBC179A and SN75LBC179A differential driver and receiver pairs are monolithic integrated circuits
designed for bidirectional data communication over long cables that take on the characteristics of transmission
lines. They are balanced, or differential, voltage mode devices that are compatible with ANSI standard
TIA/EIA-485-A and ISO 8482:1987(E). The A version offers improved switching performance over its
predecessors without sacrificing significantly more power.
The SN65LBC179A and SN75LBC179A combine a differential line driver and differential input line receiver and
operate from a single 5-V supply. The driver differential outputs and the receiver differential inputs are connected
to separate terminals for full-duplex operation and are designed to present minimum loading to the bus when
powered off (VCC = 0). These parts feature a wide positive and negative common-mode voltage range making
them suitable for point-to-point or multipoint data bus applications. The devices also provide positive- and
negative-current limiting and thermal shutdown for protection from line fault conditions.
The SN65LBC179A is characterized over the industrial temperature range of –40°C to 85°C. The SN75LBC179A
is characterized for operation over the commercial temperature range of 0°C to 70°C.
FUNCTION TABLE(1)
DRIVER
RECEIVER
DIFFERENTIAL INPUTS
OUTPUT
R
OUTPUTS
INPUT
D
A – B
Y
H
L
Z
L
V
ID ≥ 0.2 V
-0.2 V < VID < 0.2 V
ID ≤ -0.2 V
Open circuit
H
?
H
L
H
L
V
L
OPEN
H
H
(1) H = high level, L = low level, ? = indeterminate
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
LinBiCMOS is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2011, Texas Instruments Incorporated
SN65LBC179A
SN75LBC179A
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
AVAILABLE OPTIONS
PACKAGE
TA
SMALL OUTLINE
(D)
PLASTIC
DUAL-IN-LINE
0°C to 70°C
SN75LBC179AD
SN65LBC179AD
SN75LBC179AP
SN65LBC179AP
–40°C to 85°C
SCHEMATICS OF INPUTS AND OUTPUTS
D Inputs
V
CC
100 kΩ
1 kΩ
Input
8 V
A Input
B Input
V
CC
V
CC
16 V
16 V
100 kΩ
18 kΩ
4 kΩ
4 kΩ
18 kΩ
Input
Input
100 kΩ
4 kΩ
16 V
16 V
4 kΩ
Y AND Z Outputs
V
CC
R Output
V
CC
16 V
Receiver
40 Ω
Output
Output
8 V
16 V
Receiver
2
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Copyright © 2000–2011, Texas Instruments Incorporated
Product Folder Link(s): SN65LBC179A SN75LBC179A
SN65LBC179A
SN75LBC179A
www.ti.com
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
UNIT
–0.3 V to 6 V
–10 V to 15 V
–0.3 V to VCC + 0.5 V
±20 mA
VCC
Supply voltage range(2)
Voltage range
A, B, Y, or Z(2)
D or R(2)
IO
Receiver output current
Bus terminals and GND, Class 3, A(3)
Bus terminals and GND, Class 3, B(3)
All terminals, Class 3, A
12 kV
400 V
Electrostatic discharge
3 kV
All terminals, Class 3, B
400 V
Continuous total power dissipation(4)
Internally limited
See Dissipation Rating Table
Total power dissipation
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values, except differential I/O bus voltages, are with respect to GND.
(3) Tested in accordance with MIL-STD-883C, Method 3015.7
(4) The maximum operating junction temperature is internally limited. Uses the dissipation rating table to operate below this temperature.
DISSIPATION RATINGS
PACKAGE
TA ≤ 25°C
DERATING FACTOR(1)
TA = 70°C
TA = 85°C
POWER RATING
ABOVE TA = 25°C
POWER RATING
POWER RATING
D
P
725 mW
5.8 mW/°C
464 mW
640 mW
377 mW
520 mW
1100 mW
8.08 mW/°C
(1) This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air flow.
RECOMMENDED OPERATING CONDITIONS
MIN
NOM
MAX
5.25
VCC
0.8
UNIT
VCC
VIH
VIL
VID
VO
VI
Supply voltage
4.75
5
V
V
V
V
High-level input voltage
Low-level input voltage
Differential input voltage(1)
D
D
2
0
–12(2)
12
Voltage at any bus terminal (separately or common-mode)
A, B, Y, or Z
–7
12
V
VIC
Y or Z
–60
–8
IOH
IOL
TA
High-level output current
Low-level output current
Operating free-air temperature
mA
mA
°C
R
Y or Z
60
8
R
SN65LBC179A
SN75LBC179A
–40
85
70
0
(1) Differential input/output bus voltage is measured at the noninverting terminal with respect to the inverting terminal.
(2) The algebraic convention, in which the least positive (most negative) limit is designated as minimum, is used in this data sheet.
Copyright © 2000–2011, Texas Instruments Incorporated
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SN65LBC179A
SN75LBC179A
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
www.ti.com
DRIVER ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP(1)
MAX UNIT
VIK
Input clamp voltage
II = –18 mA
–1.5
1
–0.8
1.5
1.5
1.5
1.5
V
SN65LBC179A
SN75LBC179A
SN65LBC179A
SN75LBC179A
3
V
3
RL = 54 Ω, See Figure 1
1.1
1
|VOD
|
Differential output voltage
3
V
3
RL = 60 Ω, –7 <V(tot) < 12,
See Figure 2
1.1
Change in magnitude of differential output
voltage
Δ| VOD
|
See Figure 1 and Figure 2
See Figure 1
–0.2
1.8
0.2
2.8
V
V
V
(2)
Steady-state common-mode output
voltage
VOC(SS)
2.4
Change in steady-state common-mode
output voltage(2)
ΔVOC(SS)
–0.1
0.1
10
IO
Output current with power off
High-level input current
Low-level input current
Short-circuit output current
Supply current
VCC = 0,
VO = –7 V to 12 V
–10
–100
–100
–250
±1
μA
μA
IIH
IIL
VI = 2.V
VI = 0.8 V
–7 V ≤ VO ≤ 12 V
No load,
μA
IOS
ICC
±70
250
15
mA
mA
VI = 0 or VCC
8.5
(1) All typical values are at VCC = 5 V, TA = 25°C.
(2) Δ | VOD | and Δ | VOC | are the changes in the steady-state magnitude of VOD and VOC, respectively, that occur when the input is
changed from a high level to a low level.
DRIVER SWITCHING CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
2
TYP MAX
UNIT
ns
tPLH
tPHL
tsk(p)
tr
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
Pulse skew ( | tPHL – tPLH | )
6
6
12
12
1
2
ns
RL = 54 Ω, CL = 50 pF, See Figure 3
0.3
7.5
7.5
ns
Differential output signal rise time
Differential output signal fall time
4
4
11
11
ns
tf
ns
4
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Product Folder Link(s): SN65LBC179A SN75LBC179A
SN65LBC179A
SN75LBC179A
www.ti.com
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
RECEIVER SECTION
RECEIVER ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
–0.2
4
TYP
MAX UNIT
VIT+ Positive-going input threshold voltage
VIT– Negative-going input threshold voltage
IO = –8 mA
0.2
V
IO = 8 mA
Vhys Hysteresis voltage ( VIT+ – VIT–
VOH High-level output voltage
VOL Low-level output voltage
)
50
4.9
mV
V
VID = 200 mV, IOH = –8 mA, See Figure 1
VID = –200 mV, IOL = 8 mA, See Figure 1
VIH = 12 V, VCC = 5 V
0.1
0.8
1
V
0.4
VIH = 12 V, VCC = 0
0.5
1
II
Bus input current
Other input at 0 V
mA
VIH = –7 V, VCC = 5 V
VIH = –7 V, VCC = 0
–0.8
–0.8
–0.4
–0.3
RECEIVER SWITCHING CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VID = –1.5 V to 1.5 V, See Figure 4
See Figure 4
MIN TYP
MAX
UNIT
ns
tPLH
tPHL
tsk(p)
tr
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
Pulse skew ( | tPLH – tPHL | )
7
7
13
13
20
20
ns
0.5
2.1
2.1
1.5
3.3
3.3
ns
Rise time, output
ns
tf
Fall time, output
ns
PARAMETER MEASURMENT INFORMATION
Y
Ω
Ω
27
27
D
V
OD
0 V or 3 V
V
OC
Z
Figure 1. Driver VOD and VOC
V
(test )
R1
375 Ω
Y
Z
D
R = 60 Ω
L
V
OD
0 V or 3 V
R2
375 Ω
−7 V < V
< 12 V
(test)
V
(test )
Figure 2. Driver VOD With Common-Mode Loading
Copyright © 2000–2011, Texas Instruments Incorporated
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SN65LBC179A
SN75LBC179A
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
www.ti.com
PARAMETER MEASURMENT INFORMATION (continued)
3 V
Input
1.5 V
1.5 V
C = 50 pF
L
0 V
(see Note B)
R
L
= 54 Ω
t
t
PLH
PHL
Generator
(see Note A)
Output
50 Ω
≈ 1.5 V
50%
≈ − 1.5 V
90%
10%
50%
Output
t
r
t
f
TEST CIRCUIT
VOLTAGE WAVEFORMS
A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 6
ns, tf ≤ 6 ns, ZO = 50 Ω.
B. CL includes probe and jig capacitance.
Figure 3. Driver Test Circuits and Voltage Waveforms
3 V
0 V
Input
1.5 V
1.5 V
A
B
Generator
(see Note A)
Output
t
t
PHL
50 Ω
PLH
1.5 V
V
OH
C = 15 pF
(see Note B)
90%
1.3 V
10%
90%
L
1.3 V
10%
Output
V
OL
t
r
t
f
TEST CIRCUIT
VOLTAGE WAVEFORMS
A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 6
ns, tf ≤ 6 ns, ZO = 50 Ω.
B. CL includes probe and jig capacitance.
Figure 4. Receiver Test Circuit and Voltage Waveforms
6
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Product Folder Link(s): SN65LBC179A SN75LBC179A
SN65LBC179A
SN75LBC179A
www.ti.com
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
TYPICAL CHARACTERISTICS
Receiver Output
Driver Input
120 Ω
120 Ω
Driver Input
Receiver Output
Figure 5. Typical Waveform of Non-Return-To-Zero (NRZ), Pseudorandom Binary Sequence (PRBS)
Data at 100 Mbps Through 15m, of CAT 5 Unshielded Twisted Pair (UTP) Cable
TIA/EIA-485-A defines a maximum signaling rate as that in which the transition time of the voltage transition of a
logic-state change remains less than or equal to 30% of the bit length. Transition times of greater length perform
quite well even though they do not meet the standard by definition.
AVERAGE SUPPLY CURRENT
LOGIC INPUT CURRENT
vs
vs
FREQUENCY
INPUT VOLTAGE
45
40
35
−30
−25
−20
Driver
30
25
−15
−10
20
15
10
Receiver
−5
0
5
0
0
1
2
3
4
5
0.05
0.5
1
2
5
10
20
30
V − Input Voltage − V
I
f − Frequency − MHz
Figure 6.
Figure 7.
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Product Folder Link(s): SN65LBC179A SN75LBC179A
SN65LBC179A
SN75LBC179A
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
INPUT CURRENT
LOW-LEVEL OUTPUT VOLTAGE
vs
vs
INPUT VOLTAGE
LOW-LEVEL OUTPUT CURRENT
800
600
400
200
0
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
V
CC
= 5
−200
−400
−600
Bus Input Current
−8 −6 −4 −2
0
2
4
6
8
10 12
0
10
I
20
30
40
50
60
70
80
V − Input Voltage − V
I
− Low-Level Output Current − mA
OL
Figure 8.
Figure 9.
DRIVER HIGH-LEVEL OUTPUT VOLTAGE
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs
vs
HIGH-LEVEL OUTPUT CURRENT
AVERAGE CASE TEMPERATURE
2
5
4.5
4
V
CC
= 5.25 V
1.5
3.5
3
2.5
1
V
CC
= 5 V
2
V
CC
= 4.75 V
1.5
1
0.5
0
0.5
0
−40
0
25
70
85
0
−10 −20 −30 −40 −50 −60 −70 −80
°
Average Case Temperature − C
I
− High-Level Output Current − (mA)
OH
Figure 10.
Figure 11.
8
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Product Folder Link(s): SN65LBC179A SN75LBC179A
SN65LBC179A
SN75LBC179A
www.ti.com
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
TYPICAL CHARACTERISTICS (continued)
RECEIVER PROPAGATION TIME
DRIVER PROPAGATION DELAY TIME
vs
vs
CASE TEMPERATURE
CASE TEMPERATURE
13.8
7.4
7.2
13.7
13.6
7
13.5
13.4
6.8
6.6
13.3
13.2
6.4
6.2
13.1
6
13
5.8
5.6
12.9
−40
0
25
70
80
−40
0
25
70
85
°
C
Case Temperature
°
Case Temperature −
C
Figure 12.
Figure 13.
DRIVER OUTPUT CURRENT
vs
SUPPLY VOLTAGE
90
65
40
15
I
OH
−10
−35
−60
−85
−110
−135
−160
−185
I
OL
−210
0
3
4
5
6
V
CC − Supply Voltage − V
Figure 14.
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Product Folder Link(s): SN65LBC179A SN75LBC179A
SN65LBC179A
SN75LBC179A
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011
www.ti.com
REVISION HISTORY
Changes from Revision C (June 2001) to Revision D
Page
•
•
•
Changed the D Output and R Output schematins ................................................................................................................ 2
Added Receiver output current to the Abs Max Table .......................................................................................................... 3
Changed ESD - All terminals, Class 3, A From: 4 kV To: 3 kV ............................................................................................ 3
10
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Product Folder Link(s): SN65LBC179A SN75LBC179A
PACKAGE OPTION ADDENDUM
www.ti.com
18-Jul-2006
PACKAGING INFORMATION
Orderable Device
SN65LBC179AD
Status (1)
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
SOIC
D
8
8
8
8
8
8
8
8
8
8
8
8
75 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SN65LBC179ADG4
SN65LBC179ADR
SN65LBC179ADRG4
SN65LBC179AP
SOIC
SOIC
SOIC
PDIP
PDIP
SOIC
SOIC
SOIC
SOIC
PDIP
PDIP
D
D
D
P
P
D
D
D
D
P
P
75 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
50
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
SN65LBC179APE4
SN75LBC179AD
50
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
75 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SN75LBC179ADG4
SN75LBC179ADR
SN75LBC179ADRG4
SN75LBC179AP
75 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
50
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
SN75LBC179APE4
50
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
18-Jul-2006
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
5-May-2010
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
SN65LBC179ADR
SN75LBC179ADR
SOIC
SOIC
D
D
8
8
2500
2500
330.0
330.0
12.4
12.4
6.4
6.4
5.2
5.2
2.1
2.1
8.0
8.0
12.0
12.0
Q1
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
5-May-2010
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
SN65LBC179ADR
SN75LBC179ADR
SOIC
SOIC
D
D
8
8
2500
2500
340.5
340.5
338.1
338.1
20.6
20.6
Pack Materials-Page 2
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