SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
D
Meets or Exceeds the Requirements of
ANSI Standards EIA/TIA-422-B and RS-485
and ITU Recommendation V.11.
D
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
D
3-State Outputs
D
Common-Mode Output Voltage Range of
7 V to 12 V
D
Active-High Enable
D
Thermal Shutdown Protection
D
Positive- and Negative-Current Limiting
D
Operates From Single 5-V Supply
D
Low Power Requirements
D
Functionally Interchangeable With MC3487
description
The SN75174 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
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.
The SN75174 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 SN75174 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUT
ENABLE
OUTPUTS
INPUT
ENABLE
Y Z
H H H L
L H L H
X L Z Z
H = TTL high level, X = irrelevant,
L = TTL low level, Z = high impedance (off)
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.
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.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1A
1Y
1Z
1,2EN
2Z
2Y
2A
GND
VCC
4A
4Y
4Z
3,4EN
3Z
3Y
3A
N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1A
1Y
NC
1Z
1,2EN
2Z
NC
2Y
2A
GND
VCC
4A
4Y
NC
4Z
3,4EN
3Z
NC
3Y
3A
DW PACKAGE
(TOP VIEW)
NC – No internal connection
SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
2POST OFFICE BOX 655303 DALLAS, TEXAS 75265
logic symbol
EN
EN
4A
3A
3,4EN
2A
1A
1,2EN
15
9
12
7
1
4
4Z
4Y
3Z
3Y
2Z
2Y
1Z
1Y
13
14
11
10
5
6
3
2
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram, each driver (positive logic)
A
EN
Y
Z
schematics of inputs and outputs
Enable Inputs: R(eq) = 8 k NOM
R(eq) = equivalent resistor
Data Inputs: R(eq) = 3 k NOM
Input
VCC
R(eq)
EQUIVALENT OF EACH INPUT TYPICAL OF ALL OUTPUTS
GND
Output
VCC
SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, VCC (see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range,VO 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 af fect device reliability.
NOTE 1: All voltage values are with respect to the network ground terminal.
DISSIPATION RATING TABLE
PACKAGE TA 25°C
POWER RATING DERATING F ACTOR
ABOVE TA = 25°CTA = 70°C
POWER RATING
DW 1125 mW 9.0 mW/°C 720 mW
N 1150 mW 9.2 mW/°C 736 mW
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, VCC 4.75 5 5.25 V
High-level input voltage, VIH 2 V
Low-level input voltage, VIL 0.8 V
Common-mode output voltage, VOC 7 to 12 V
High-level output current, IOH –60 mA
Low-level output current, IOL 60 mA
Operating free-air temperature, TA0 70 °C
SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
4POST OFFICE BOX 655303 DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYPMAX UNIT
VIK Input clamp voltage II = –18 mA 1.5 V
VOH
High level out
p
ut voltage
V
IH
= 2 V, V
IL
= 0.8 V,
37
V
V
OH
High
-
le
v
el
o
u
tp
u
t
v
oltage
IH ,IL ,
IOH = –33 mA
3
.
7
V
VOL
Low level out
p
ut voltage
V
IH
= 2 V, V
IL
= 0.8 V,
11
V
V
OL
Lo
w-
le
v
el
o
u
tp
u
t
v
oltage
IH ,IL ,
IOL = 33 mA
1
.
1
V
VOOutput voltage IO = 0 0 6 V
|VOD1|Differential output voltage IO = 0 1.5 6 6 V
RL= 100 See Figure 1
1/2 VOD1
V
|VOD2|Differential output voltage
R
L =
100
,
See
Fig
u
re
1
OD1
or 2
V
RL = 54 Ω, See Figure 1 1.5 2.5 5 V
VOD3 Differential output voltage See Note 2 1.5 5 V
|VOD| Change in magnitude of differential output
voltage§±0.2 V
VOC
Common mode output voltage
R54or 100 See Figure 1
+3
V
V
OC
C
ommon-mo
d
e ou
t
pu
t
vo
lt
age
R
L =
54
or
100
,
S
ee
Fi
gure
1
–1
V
|VOC|
Chan
g
e in ma
g
nitude of common-mode output
±02
V
|V
OC
|
Change
in
magnitude
of
common mode
out ut
voltage§
±0
.
2
V
IOOutput current with power off VCC = 0, VO = – 7 V to 12 V ±100 µA
IOZ High-impedance-state output current VO = – 7 V to 12 V ±100 µA
IIH High-level input current VI = 2.7 V 20 µA
IIL Low-level input current VI = 0.5 V 360 µA
VO = – 7 V 180
IOS Short-circuit output current VO = VCC 180 mA
VO = 12 V 500
ICC
Su
pp
ly current (all drivers)
Outputs enabled 38 60
mA
I
CC
S
u
ppl
y
c
u
rrent
(all
dri
v
ers)
Outputs disabled 18 40
mA
All typical values are at VCC = 5 V and TA = 25°C.
The minimum VOD2 with a 100- 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 EIA Standard RS-485.
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
td(OD) Differential-output delay time
RL=54See Figure 2
45 65 ns
tt(OD) Differential-output transition time
R
L =
54
,
See
Fig
u
re
2
80 120 ns
tPZH Output enable time to high level RL = 110 , See Figure 3 80 120 ns
tPZL Output enable time to low level RL = 110 Ω, See Figure 4 55 80 ns
tPHZ Output disable time from high level RL = 110 , See Figure 3 75 115 ns
tPLZ Output disable time from low level RL = 110 , See Figure 3 18 30 ns
SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
SYMBOL EQUIVALENTS
DATA SHEET PARAMETER EIA/TIA-422-B RS-485
VOVoa, Vob Voa, Vob
|VOD1| VoVo
|VOD2| Vt (RL = 100 ) Vt (RL = 54 )
|VOD3|Vt (Test Termination)
Measurement 2)
|VOD|||Vt| – |Vt|| | |Vt| – |Vt||
VOC |Vos||Vos|
|VOC||Vos – Vos||Vos – Vos|
IOS |Isa|,|Isb|
IO|Ixa|,|Ixb| Iia,Iib
PARAMETER MEASUREMENT INFORMATION
VOC
2
RL
2
RL
VOD2
Figure 1. Differential and Common-Mode Output Voltages
VOLTAGE WAVEFORMSTEST CIRCUIT
10%
50%
90%
1.5 V1.5 V
tt(OD)
td(OD)
tt(OD)
~2.5 V
0 V
3 V
td(OD)
Output
Input
CL = 50 pF
(see Note B) Output
54
RL =
3 V
50 ~2.5 V
Generator
(see Note A) 90%
50%
10%
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 .
B. CL includes probe and stray capacitance.
Figure 2. Differential-Output Test Circuit and Voltage Waveforms
SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
6POST OFFICE BOX 655303 DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORMSTEST CIRCUIT
Output
Input 1.5 V
2.3 V
1.5 V
tPHZ
tPZH 0.5 V
Voff 0 V
VOH
0 V
3 V
3 V to 0 V
50
S1
RL = 110
Output
Generator
(see Note A) CL = 50 pF
(see Note B)
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 .
B. CL includes probe and stray capacitance.
Figure 3. Test Circuit and Voltage Waveforms
RL = 110
VOLTAGE WAVEFORMSTEST CIRCUIT
Output
Input
tPZL
1.5 V
2.3 V 0.5 V
tPLZ
1.5 V
VOL
5 V
0 V
3 V
50
S1 Output
5 V
0 V to 3 V
Generator
(see Note A) CL = 50 pF
(see Note B)
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 .
B. CL includes probe and stray capacitance.
Figure 4. Test Circuit and Voltage Waveforms
SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
7
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
TA = 25°C
VCC = 5 V
4.5
4
3.5
3
2.5
2
1.5
1
0.5
100–80–60–40–20
0120
5
IOH – High-Level Output Current – mA
– High-Level Output Voltage – V
0
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
ÁÁ
ÁÁ
ÁÁ
VOH
Figure 6
IOL – Low-Level Output Current – mA
– Low-Level Output Voltage – V
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
5
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
10080604020 1200
ÁÁ
ÁÁ
ÁÁ
VOL
TA = 25°C
VCC = 5 V
Figure 7
IO – Output Current – mA
DIFFERENTIAL OUTPUT VOLTAGE
vs
OUTPUT CURRENT
3.5
3
2.5
2
1.5
1
0.5
908070605040302010
0
4
VOD – Differential Output Voltage – V
0
ÁÁ
ÁÁ
ÁÁ
OD
V
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
VCC = 5 V
TA = 25°C
Figure 8
IO – Output Current – A
VO – Output Voltage – V
OUTPUT CURRENT
vs
OUTPUT VOLTAGE
VCC = 5 V
VCC = 0 V
40
30
20
10
0
–10
–20
–30
–40
20151050–5–10–15–20
–50 25
50
–25
ÁÁ
ÁÁ
ÁÁ
IO
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
Output Disabled
TA = 25°C
ÁÁ
ÁÁ
Aµ
SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
8POST OFFICE BOX 655303 DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 9
VCC – Supply Voltage – V
ICC – Supply Current – mA
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
Grounded
Inputs
90
80
70
60
50
40
30
20
10
7654321
08
100
0
ÁÁÁÁÁ
ÁÁÁÁÁ
TA = 25°C
Outputs Enabled
No Load
ÁÁÁ
ÁÁÁ
ÁÁÁ
CC
I
Inputs Open
Figure 10
VCC – Supply Voltage – V
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
25
20
15
10
5
765432
08
30
0
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
Outputs Disabled
TA = 25°C
Input Open
No Load
ICC – Supply Current – mA
ÁÁ
ÁÁ
ÁÁ
CC
I
1
APPLICATION INFORMATION
1/4 SN75175
1/4 SN75174
RS-485 Unit Loads
Up to 32
1/4 SN751741/4 SN751731/4 SN75172 1/4 SN75173
1/4 SN75173
1/4 SN75172
RT
RT
NOTE: The line length should be terminated at both ends in its characteristic impedance (R T = ZO). Stub lengths of f the main line should be
kept as short as possible.
Figure 11. Typical Application Circuit
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
SN75174DW ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN75174DWG4 ACTIVE SOIC DW 20 25 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN75174DWR ACTIVE SOIC DW 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN75174DWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN75174DWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN75174J OBSOLETE CDIP J 16 TBD Call TI Call TI
SN75174N ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN75174NE4 ACTIVE PDIP N 16 25 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.
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.
PACKAGE OPTION ADDENDUM
www.ti.com 10-May-2007
Addendum-Page 1
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
SN75174DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1
SN75174DWR SOIC DW 20 2000 330.0 24.4 10.8 13.1 2.65 12.0 24.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN75174DWR SOIC DW 20 2000 367.0 367.0 45.0
SN75174DWR SOIC DW 20 2000 367.0 367.0 45.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
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