SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
D
D
D
D
D
D
D
D
D
N PACKAGE
(TOP VIEW)
Meets or Exceeds the Requirements of
ANSI Standards EIA/TIA-422-B and RS-485
and ITU Recommendation V.11
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
3-State Outputs
Common-Mode Output Voltage Range of
– 7 V to 12 V
Active-High and Active-Low Enables
Thermal Shutdown Protection
Positive- and Negative-Current Limiting
Operates From Single 5-V Supply
Logically Interchangeable With AM26LS31
1A
1Y
1Z
G
2Z
2Y
2A
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
4A
4Y
4Z
G
3Z
3Y
3A
DW PACKAGE
(TOP VIEW)
1A
1Y
NC
1Z
G
2Z
NC
2Y
2A
GND
description
The SN75172 is a monolithic quadruple
differential line driver with 3-state outputs. It is
designed to meet the requirements of ANSI
Standards EIA/TIA-422-B and RS-485 and ITU
Recommendation V.11. The device is optimized
for balanced multipoint bus transmission at rates
of up to 4 megabaud. Each driver features wide
positive and negative common-mode output
voltage ranges, making it suitable for party-line
applications in noisy environments.
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
4A
4Y
NC
4Z
G
3Z
NC
3Y
3A
NC – No internal connection
The SN75172 provides positive- and negative-current limiting and thermal shutdown for protection from line
fault conditions on the transmission bus line. Shutdown occurs at a junction temperature of approximately
150°C. This device offers optimum performance when used with the SN75173 or SN75175 quadruple
differential line receivers.
The SN75172 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
ENABLES
OUTPUTS
G
G
Y
H
H
X
H
L
L
H
X
L
H
H
X
L
H
L
L
X
L
L
H
X
L
H
Z
Z
INPUT
A
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance (off)
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.
Copyright 1995, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
logic symbol†
G
G
4
12
logic diagram (positive logic)
≥1
G
EN
G
4
12
2
1A
2A
3A
4A
2
1
3
6
7
5
10
9
11
14
15
13
1A
1Y
1
3
1Y
1Z
1Z
6
2Y
2A
2Z
7
5
2Y
2Z
3Y
10
3Z
3A
4Y
9
11
3Y
3Z
4Z
14
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
Terminal numbers shown are for the N package.
4A
15
13
4Y
4Z
absolute maximum ratings over operating free-air temperature (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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°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 are with respect to the network ground terminal.
DISSIPATION RATING TABLE
2
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
DW
1125 mW
9.0 mW/°C
720 mW
N
1150 mW
9.2 mW/°C
736 mW
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
recommended operating conditions
Supply voltage, VCC
MIN
NOM
MAX
UNIT
4.75
5
5.25
V
High-level input voltage, VIH
2
V
Low-level input voltage, VIL
0.8
Common-mode output voltage, VOC
– 7 to 12
High-level output current, IOH
Low-level output current, IOL
Operating free-air temperature, TA
0
V
V
– 60
mA
60
mA
70
°C
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIK
VO
Input clamp voltage
VOH
VOL
High-level output voltage
Low-level output voltage
VIH = 2 V,
VIH = 2 V,
|VOD1|
Differential output voltage
IO = 0
Output voltage
II = – 18 mA
IO = 0
See Figure 1
Differential output voltage
∆|VOD|
Change in magnitude of
differential output voltage§
VOC
Common mode output
Common-mode
o tp t voltage
oltage¶
∆|VOC|
Change in magnitude of
common-mode output voltage§
IO
Output current with power off
VCC = 0,
IOZ
High-impedance-state
output current
IOH = – 33 mA
IOH = 33 mA
V
6
V
V
1.1
V
6
1.5
V
V
2.5
1.5
5
V
5
V
± 0.2
V
+3
See Figure 1
–1
V
± 0.2
V
± 100
µA
VO = – 7 V to 12 V
± 100
µA
VI = 2.7 V
VI = 0.5 V
20
µA
Low-level input current
– 360
µA
Short-circuit output current
VO = – 7 V
VO = VCC
High-level input current
VO = – 7 V to 12 V
– 180
180
VO = 12 V
ICC
UNIT
– 1.5
1/2 VOD1
or 2‡
See Note 2
RL = 54 Ω or 100 Ω
Ω,
MAX
3.7
1.5
RL = 54 Ω,
VOD3
IOS
VIL = 0.8 V,
VIL = 0.8 V,
See Figure 1
Differential output voltage
TYP†
0
RL = 100 Ω
Ω,
|VOD2|
IIH
IIL
MIN
Supply current (all drivers)
No load
mA
500
Outputs enabled
38
60
Outputs disabled
18
40
mA
† All typical values are at VCC = 5 V and TA = 25°C.
‡ The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater.
§ ∆|VOD| and ∆|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low
level.
¶ In ANSI Standard EIA/TIA-422-B, VOC, which is the average of the two output voltages with respect to ground, is called output offset voltage,
VOS.
NOTE 2: See Figure 3-5 of EIA Standard RS-485.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
SYMBOL EQUIVALENTS
DATA SHEET PARAMETER
EIA/TIA-422-B
RS-485
VO
|VOD1|
Voa, Vob
Vo
Voa, Vob
Vo
|VOD2|
Vt (RL = 100 Ω)
Vt (RL = 54 Ω)
Vt (Test Termination)
Measurement 2)
∆|VOD|
| |Vt| – |Vt| |
| |Vt| – |Vt| |
VOC
∆|VOC|
IOS
|Vos|
|Vos – Vos|
|Isa|,|Isb|
|Vos|
|Vos – Vos|
IO
|Ixa|,|Ixb|
Iia,Iib
|VOD2|
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER
td(OD)
tt(OD)
Differential-output delay time
tPZH
tPZL
tPHZ
tPLZ
TEST CONDITIONS
MIN
TYP
MAX
45
65
UNIT
ns
RL = 54 Ω
Ω,
See Figure 2
80
120
ns
Output enable time to high level
RL = 110 Ω,
See Figure 3
80
120
ns
Output enable time to low level
RL = 110 Ω,
See Figure 4
45
80
ns
Output disable time from high level
RL = 110 Ω,
See Figure 3
78
115
ns
Output disable time from low level
RL = 110 Ω,
See Figure 4
18
30
ns
Differential-output transition time
PARAMETER MEASUREMENT INFORMATION
RL
2
VOD2
RL
2
VOC
Figure 1. Differential and Common-Mode Output Voltages
3V
Input
Generator
(see Note A)
RL =
54 Ω
50 Ω
CL = 50 pF
Output
(see Note B)
1.5 V
1.5 V
0V
td(OD)
≈ 2.5 V
td(OD)
3V
Output
50%
90%
50%
10%
tt(OD)
3 V or 0
TEST CIRCUIT
≈ 2.5 V
tt(OD)
VOLTAGE WAVEFORMS
NOTES: A. The input pulse is supplied by a generator having the following characteristics: tr ≤ 5 ns, tf ≤ 5 ns, PRR ≤ 1 MHz, duty cycle = 50%,
ZO = 50 Ω.
B. CL includes probe and stray capacitance.
Figure 2. Differential-Output Test CIrcuit and Voltage Waveforms
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
3V
S1
Output
0 V to 3 V
Generator
(see Note A)
Input
1.5 V
tPZH
RL = 110 Ω
50 Ω
1.5 V
0.5 V
0V
VOH
Output
3V
(see Note C)
2.3 V
CL = 50 pF
(see Note B)
Voff ≈ 0 V
tPHZ
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES. A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle = 50%, tr ≤ 5 ns, tf ≤ 5 ns,
ZO = 50 Ω.
B. CL includes probe and stray capacitance.
C. To test the active-low enable G, ground G and apply an inverted waveform to G.
Figure 3. Test Circuit and Voltage Waveforms
5V
RL = 110 Ω
S1
1.5 V
1.5 V
Output
0 V to 3 V
Generator
(see Note A)
3V
Input
0V
tPZL
50 Ω
CL = 50 pF
(see Note B)
tPLZ
5V
2.3 V
Output
3V
(see Note C)
0.5 V
VOL
VOLTAGE WAVEFORMS
TEST CIRCUIT
NOTES. A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle = 50%, tr ≤ 5 ns, tf ≤ 5 ns,
ZO = 50 Ω.
B. CL includes probe and stray capacitance.
C. To test the active-low enable G, ground G and apply an inverted waveform to G.
Figure 4. Test Circuit and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
VCC = 5 V
TA = 25°C
4
3.5
3
2.5
2
1.5
1
4
3.5
3
2.5
2
1.5
1
0.5
0.5
0
VCC = 5 V
TA = 25°C
4.5
VOL – Low-Level Output Voltage – V
VOH – High-Level Output Voltge – V
4.5
ÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
5
5
0
0
– 20
– 40
– 60
– 80
– 100
0
– 120
IOH – High-Level Output Current – mA
20
40
100
120
Figure 6
OUTPUT CURRENT
vs
OUTPUT VOLTAGE
DIFFERENTIAL OUTPUT VOLTAGE
vs
OUTPUT CURRENT
50
4
VCC = 5 V
TA = 25°C
3.5
40
Output Dissabled
TA = 25°C
30
3
IIO
O – Output Current – A
VOD – Differential Output Voltage – V
80
IOL – Low-Level Output Current – mA
Figure 5
2.5
2
20
10
VCC = 0
0
ÁÁ
ÁÁ
ÁÁ
1.5
1
– 10
– 20
VCC = 5 V
– 30
0.5
– 40
0
0
10
20
30
40
50
60
70
80
90 100
– 50
– 25 – 20 – 15 – 10 – 5
0
Figure 7
Figure 8
POST OFFICE BOX 655303
5
10
VO – Output Voltage – V
IO – Output Current – mA
6
60
• DALLAS, TEXAS 75265
15
20
25
SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
100
80
70
60
Inputs
Open
50
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
40
Inputs
Grounded
30
20
10
0
0
1
2
3
No Load
Input Open
Output Enabled
TA = 25°C
25
ICC
I CC – Supply Current – mA
90
ICC
I CC – Supply Current – mA
30
No Load
Outputs Enabled
TA = 25°C
4
5
6
7
20
15
10
5
0
8
0
1
VCC – Supply Voltage – V
Figure 9
2
3
4
5
6
VCC – Supply Voltage – V
7
8
Figure 10
APPLICATION INFORMATION
1/4 SN75172
1/4 SN75174
RT
RT
1/4 SN75173
Up to 32
RS-485 Unit Load
1/4 SN75172
1/4 SN75173
1/4 SN75175
1/4 SN75173 1/4 SN75174
NOTE A: The line length should be terminated at both ends in its characteristic impedance (RT = ZO). Stub lengths off the main line should
be kept as short as possible.
Figure 11
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
7
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
(2)
MSL Peak Temp
Op Temp (°C)
Top-Side Markings
(3)
(4)
SN75172DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
SN75172
SN75172DWE4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
SN75172
SN75172DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
SN75172
SN75172DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
SN75172
SN75172DWRE4
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
SN75172
SN75172DWRG4
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
SN75172
SN75172N
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN75172N
SN75172NE4
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN75172N
(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.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
(4)
Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a
continuation of the previous line and the two combined represent the entire Top-Side Marking for that device.
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.
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
31-Jan-2014
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
B0
(mm)
K0
(mm)
P1
(mm)
W
Pin1
(mm) Quadrant
SN75172DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
SN75172DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
31-Jan-2014
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
SN75172DWR
SOIC
DW
20
2000
367.0
367.0
45.0
SN75172DWR
SOIC
DW
20
2000
367.0
367.0
45.0
Pack Materials-Page 2
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