SGLS211A − OCTOBER 2003 − REVISED MAY 2008
D Qualified for Automotive Applications
D Bidirectional Transceiver
D Meet or Exceed the Requirements of ANSI
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Standard RS-485 and
ISO 8482:1987(E)
High-Speed Low-Power LinBiCMOS
Circuitry
Designed for High-Speed Operation in Both
Serial and Parallel Applications
Low Skew
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
Very Low Disabled Supply-Current
Requirements . . . 200 µA Maximum
Wide Positive and Negative Input/Output
Bus Voltage Ranges
Driver Output Capacity . . . ± 60 mA
Thermal-Shutdown Protection
Driver Positive-and Negative-Current
Limiting
Open-Circuit Fail-Safe Receiver Design
Receiver Input Sensitivity . . . ± 200 mV Max
Receiver Input Hysteresis . . . 50 mV Typ
Operate From a Single 5-V Supply
Glitch-Free Power-Up and Power-Down
Protection
D PACKAGE
(TOP VIEW)
R
RE
DE
D
1
8
2
7
3
6
4
5
VCC
B
A
GND
Function Tables
DRIVER
INPUT
D
H
L
X
ENABLE
DE
H
H
L
OUTPUTS
A
B
H
L
L
H
Z
Z
RECEIVER
DIFFERENTIAL INPUTS
A −B
VID ≥ 0.2 V
−0.2 V < VID < 0.2 V
VID ≤ − 0.2 V
X
Open
H = high level,
X = irrelevant,
ENABLE
RE
L
L
L
H
L
OUTPUT
R
H
?
L
Z
H
L = low level, ? = indeterminate,
Z = high impedance (off)
description/ordering information
The SN65LBC176 differential bus transceiver is a monolithic, integrated circuit designed for bidirectional data
communication on multipoint bus-transmission lines. It is designed for balanced transmission lines and meets
ANSI Standard RS-485 and ISO 8482:1987(E).
ORDERING INFORMATION{
TA
ORDERABLE
PART NUMBER
PACKAGE‡
TOP-SIDE
MARKING
−40°C to 125°C
SOIC − D
Tape and reel
SN65LBC176QDRQ1
L176Q1
† For the most current package and ordering information, see the Package Option Addendum at the end
of this document, or see the TI web site at http://www.ti.com.
‡ Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
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 and LinASIC are trademarks of Texas Instruments Incorporated.
Copyright 2008, Texas Instruments Incorporated
! "#$ ! %#&'" ($)
(#"! " !%$""! %$ *$ $! $+!
!#$!
!(( ,-) (#" %"$!!. ($! $"$!!'- "'#($
$!. '' %$$!)
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SGLS211A − OCTOBER 2003 − REVISED MAY 2008
description (continued)
The SN65LBC176 combines a 3-state, differential line driver and a differential input line receiver, both of which
operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables,
respectively, which can externally connect together to function as a direction control. The driver differential
outputs and the receiver differential inputs connect internally to form a differential input/output (I/O) bus port that
is designed to offer minimum loading to the bus whenever the driver is disabled or VCC = 0. This port features
wide positive and negative common-mode voltage ranges, making the device suitable for party-line
applications. Very low device supply current can be achieved by disabling the driver and the receiver. Both the
driver and receiver are available as cells in the Texas Instruments LinASIC Library.
This transceiver is suitable for ANSI Standard RS-485 and ISO 8482:1987 (E) applications to the extent that
they are specified in the operating conditions and characteristics section of this data sheet. Certain limits
contained in the ANSI Standard RS-485 and ISO 8482:1987 (E) are not met or cannot be tested over the entire
extended temperature range.
logic diagram (positive logic)
DE
3
4
D
RE
R
2
6
1
7
A
Bus
B
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT
TYPICAL OF A AND B I/O PORTS
TYPICAL OF RECEIVER OUTPUT
VCC
VCC
VCC
100 kΩ NOM
A Port Only
3 kΩ
NOM
A or B
Output
Input
18 kΩ
NOM
100 kΩ NOM
B Port Only
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1.1 kΩ
NOM
SGLS211A − OCTOBER 2003 − REVISED MAY 2008
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10 V to 15 V
Input voltage, VI (D, DE, R, or RE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to VCC + 0.5 V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA SN65LBC176Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 125°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† 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.
NOTE 1: All voltage values, except differential I/O bus voltage, are with respect to network ground terminal.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
TA = 125°C
POWER RATING
D
725 mW
5.8 mW/°C
464 mW
377 mW
145 mW
recommended operating conditions
Supply voltage, VCC
MIN
NOM
MAX
UNIT
4.75
5
5.25
V
12
Voltage at any bus terminal (separately or common mode), VI or VIC
−7
High-level input voltage, VIH
D, DE, and RE
Low-level input voltage, VIL
D, DE, and RE
0.8
± 12
V
Driver
−60
mA
−400
µA
Differential input voltage, VID (see Note 2)
High-level output current, IOH
Receiver
Driver
Low-level output current, IOL
Receiver
2
V
V
60
8
Operating free-air temperature, TA
SN65LBC176Q
−40
125
NOTE 2: Differential input /output bus voltage is measured at the noninverting terminal A with respect to the inverting terminal B.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
V
mA
°C
3
SGLS211A − OCTOBER 2003 − REVISED MAY 2008
DRIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIK
VO
Input clamp voltage
| VOD1 |
Differential output voltage
VOD3
| VOD2 |
∆| VOD |
Change in magnitude of differential
output voltage †
VOC
Common-mode output voltage
∆| VOC |
Change in magnitude of
common-mode output voltage†
IO
Output current
IIH
IIL
High-level input current
IOS
ICC
MIN
II = − 18 mA
IO = 0
Output voltage
MAX
UNIT
−1.5
V
0
6
V
1.5
6
V
Differential output voltage
IO = 0
Vtest = − 7 V to 12 V,
See Figure 2,
See Note 3
1.1
V
Differential output voltage
RL = 54 Ω,
See Figure 1,
See Note 3
1.1
V
Low-level input current
Short-circuit output current
Supply current
± 0.2
RL = 54 Ω or 100 Ω,
3
See Figure 1
−1
± 0.2
Output disabled,
See Note 4
V
VO = 12 V
VO = − 7 V
V
V
1
−0.8
mA
VI = 2.4 V
VI = 0.4 V
−100
µA
−100
µA
VO = − 7 V
VO = 0
−250
−150
mA
VO = VCC
VO = 12 V
250
VI = 0 or VCC,
No load
Receiver disabled and driver
enabled
1.75
Receiver and driver disabled
0.25
mA
† ∆ | VOD | and ∆ | VOC | are the changes in magnitude of VOD and VOC, respectively, that occur when the input changes from a high level to a
low level.
NOTES: 3. This device meets the ANSI Standard RS-485 VOD requirements above 0°C only.
4. This applies for both power on and off; refer to ANSI Standard RS-485 for exact conditions.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature
PARAMETER
td(OD)
tt(OD)
Differential output delay time
tsk(p)
tPZH
Pulse skew ( | td(ODH) − td(ODL) | )
tPZL
tPHZ
CL = 50 pF,
Output enable time to high level
RL = 110 Ω,
See Figure 4
Output enable time to low level
RL = 110 Ω,
Output disable time from high level
RL = 110 Ω,
RL = 110 Ω,
POST OFFICE BOX 655303
MIN
TYP†
8
RL = 54 Ω,
Ω
See Figure 3
Differential output transition time
tPLZ
Output disable time from low level
† All typical values are at VCC = 5 V, TA = 25°C.
4
TEST CONDITIONS
MAX
31
12
UNIT
ns
ns
6
ns
65
ns
See Figure 5
65
ns
See Figure 4
105
ns
See Figure 5
105
ns
• DALLAS, TEXAS 75265
SGLS211A − OCTOBER 2003 − REVISED MAY 2008
SYMBOL EQUIVALENTS
DATA SHEET PARAMETER
RS-485
VO
| VOD1 |
Voa, Vob
Vo
| VOD2 |
| VOD3 |
Vt (RL = 54 Ω)
Vt (test termination
measurement 2)
∆ | VOD |
| | Vt | − | Vt | |
VOC
∆ | VOC |
| Vos |
| Vos − Vos |
IOS
IO
None
Iia, Iib
RECEIVER SECTION
electrical characteristics over recommended ranges of common-mode input voltage, supply
voltage, and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIT +
Positive-going input threshold
voltage
VO = 2.7 V,
IO = − 0.4 mA
VIT −
Negative-going input threshold
voltage
VO = 0.5 V,
IO = 8 mA
Vhys
Hysteresis voltage (VIT + − VIT −)
(see Figure 4)
VIK
Enable-input clamp voltage
II = − 18 mA
VOH
VOL
High-level output voltage
Low-level output voltage
VID = 200 mV,
VID = 200 mV,
IOZ
High-impedance-state output
current
VO = 0.4 V to 2.4 V
II
Line input current
Other input = 0 V,
See Note 5
IIH
IIL
High-level enable-input current
rI
Input resistance
ICC
Supply current
Low-level enable-input current
MIN
TYP†
MAX
0.2
−0.2‡
mV
−1.5
See Figure 6
2.7
See Figure 6
VI = 12 V
VI = − 7 V
0.45
V
± 20
µA
1
−100
−100
12
Receiver enabled and driver disabled
Receiver and driver disabled
V
V
−0.8
VIH = 2.7 V
VIL = 0.4 V
VI = 0 or VCC,
No load
V
V
50
A,
IOH = − 400 µA,
IOL = 8 mA,
UNIT
mA
µA
µA
kΩ
3.9
0.25
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The algebraic convention, in which the less-positive (more-negative) limit is designated minimum, is used in this data sheet for common-mode
input voltage and threshold voltage levels only.
NOTE 5: This applies for both power on and power off. Refer to ANSI Standard RS-485 for exact conditions.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
SGLS211A − OCTOBER 2003 − REVISED MAY 2008
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, CL = 15 pF
PARAMETER
TEST CONDITIONS
tPLH
tPHL
Propagation delay time, low- to high-level single-ended output
tsk(p)
tPZH
Pulse skew ( | td(ODH) − td(ODL) | )
Output enable time to high level
tPZL
tPHZ
Output enable time to low level
tPLZ
Output disable time from low level
VID = − 1.5 V to 1.5 V,
See Figure 7
Propagation delay time, high- to low-level single-ended output
MIN
MAX
11
37
ns
11
37
ns
10
ns
35
ns
35
ns
35
ns
35
ns
See Figure 8
Output disable time from high level
See Figure 8
UNIT
PARAMETER MEASUREMENT INFORMATION
375 Ω
RL
VOD2
2
RL
2
VOD3
60 Ω
VOC
Vtest
375 Ω
Figure 1. Driver VOD and VOC
Figure 2. Driver VOD3
3V
Input
Generator
(see Note A)
RL = 54 Ω
50 Ω
1.5 V
CL = 50 pF
(see Note B)
0V
td(ODH)
Output
Output
3V
1.5 V
td(ODL)
90%
50%
≈ 2.5 V
50%
10%
≈ − 2.5 V
tt(OD)
VOLTAGE WAVEFORMS
tt(OD)
TEST CIRCUIT
Figure 3. Driver Test Circuit and Voltage Waveforms
Output
3V
S1
Input
1.5 V
1.5 V
0 V or 3 V
Generator
(see Note A)
50 Ω
CL = 50 pF
(see Note B)
tPZH
RL = 110 Ω
VOH
Output
TEST CIRCUIT
2.3 V
tPHZ
VOLTAGE WAVEFORMS
Figure 4. Driver Test Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303
0V
0.5 V
• DALLAS, TEXAS 75265
Voff ≈ 0 V
SGLS211A − OCTOBER 2003 − REVISED MAY 2008
PARAMETER MEASUREMENT INFORMATION
5V
3V
RL = 110 Ω
S1
1.5 V
1.5 V
0V
Output
3 V or 0 V
Generator
(see Note A)
Input
tPZL
tPLZ
CL = 50 pF
(see Note B)
50 Ω
5V
0.5 V
2.3 V
Output
VOL
TEST CIRCUIT
VOLTAGE WAVEFORMS
Figure 5. Driver Test Circuit and Voltage Waveforms
NOTES: 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.
VID
VOH
VOL
+ IOL
−IOH
Figure 6. Receiver VOH and VOL
3V
Input
Generator
(see Note A)
1.5 V
1.5 V
Output
51 Ω
1.5 V
CL = 15 pF
(see Note B)
0V
tPLH
Output
0V
tPHL
VOH
1.3 V
1.3 V
VOL
VOLTAGE WAVEFORMS
TEST CIRCUIT
NOTES: 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 7. Receiver Test Circuit and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
7
SGLS211A − OCTOBER 2003 − REVISED MAY 2008
PARAMETER MEASUREMENT INFORMATION
S1
1.5 V
2 kΩ
−1.5 V
S2
5V
CL = 15 pF
(see Note B)
Generator
(see Note A)
5 kΩ
1N916 or Equivalent
50 Ω
S3
TEST CIRCUIT
Input
3V
S1 to 1.5 V
S2 Open
S3 Closed
0V
1.5 V
Input
1.5 V
tPZH
tPZL
VOH
≈ 4.5 V
1.5 V
Output
3V
S1 to −1.5 V
S2 Closed
S3 Opened
0V
Output
0V
1.5 V
VOL
1.5 V
Input
3V
S1 to 1.5 V
S2 Closed
S3 Closed
0V
Input
tPHZ
3V
S1 to −1.5 V
S2 Closed
S3 Closed
0V
1.5 V
tPLZ
≈ 1.3 V
VOH
Output
0.5 V
Output
0.5 V
≈ 1.3 V
VOL
VOLTAGE WAVEFORMS
Figure 8. Receiver Test Circuit and Voltage Waveforms
NOTES: 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.
8
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
SN65LBC176QDRG4Q1
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
J176Q1
SN65LBC176QDRQ1
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
J176Q1
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of