SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Meets or Exceeds the Requirements of
ANSI EIA/TIA-422-B, EIA/TIA-423-B, and
RS-485
D
Meets ITU Recommendations V.10, V.11,
X.26, and X.27
D
Designed for Multipoint Bus Transmission
on Long Bus Lines in Noisy Environments
D
Low Supply Current Requirement
27 mA Max
D
Common-Mode Input Voltage Range of
–12 V to 12 V
D
Input Sensitivity...±200 mV
D
Input Hysteresis...50 mV Typ
D
High Input Impedance...12 kΩ Min
D
Operates From Single 5-V Supply
description
The SN75ALS175 is a monolithic quadruple differential line receiver with 3-state outputs. It is designed to meet
the requirements of ANSI Standards EIA/TIA-422-B, EIA/TIA-423-B, and RS-485 and several ITU
recommendations. Advanced low-power Schottky technology provides high speed without the usual power
penalty. Each of the two pairs of receivers has a common active-high enable. The device features high input
impedance, input hysteresis for increased noise immunity, and input sensitivity of ±200 mV over a
common-mode input voltage range of –12 V to 12 V.
The SN75ALS175 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each receiver)
DIFFERENTIAL INPUTS ENABLES OUTPUT
A – B EN Y
VID ≥ 0.2 V H H
–0.2 V < VID < 0.2 V H ?
VID ≤ – 0.2 V H L
X L Z
Open Circuit H H
H = high level, L = low level, ? = indeterminate,
X = irrelevant, 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
1B
1A
1Y
1,2EN
2Y
2A
2B
GND
VCC
4B
4A
4Y
3,4EN
3Y
3A
3B
N OR NS
†
PACKAGE
(TOP VIEW)
†The NS package is only available left-ended taped and reeled
(order device SN75ALS175NSLE).
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol†
4Y
3Y
2Y
1Y
4B
4A
3B
3A
3,4EN
2B
2A
1B
1A
1,2EN
13
11
5
3
15
14
9
10
12
7
6
1
2
4
EN
EN
†This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
logic diagram (positive logic)
2B
2A
1B
1A
1,2EN
2Y
1Y
3
5
4B
4A
3B
3A
3,4EN
13
11 3Y
4Y15
14
9
10
12
7
6
1
2
4
schematics of inputs and outputs
TYPICAL OF ALL OUTPUTSEQUIVALANT OF EACH ENABLE INPUTEQUIVALANT OF EACH A OR B INPUT
70 Ω
GND
Output
VCC
GND
VCC
VCC
288 kΩ
NOM
GND
Input
VCC (A)
or
GND (B)
17 kΩ
NOM
17 kΩ
NOM
17 kΩ
NOM EN
Input
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC (see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI (A or B inputs) ±14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage, VID (see Note 2) ±14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enable input voltage, VI 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low-level output current, IOL 50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
NOTES: 1. All voltage values, except differential input voltage, are with respect to network ground terminal.
2. Differential-input voltage is measured at the noninverting input with respect to the corresponding inverting input.
DISSIPATION RATING TABLE
PACKAGE TA ≤ 25°C
POWER RATING DERATING F ACTOR
ABOVE TA = 25°CTA = 70°C
POWER RATING
N1150 mW 9.2 mW/°C 736 mW
NS 625 mW 5.0 mW/°C 400 mW
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, VCC 4.75 5 5.25 V
Common-mode input voltage, VIC ±12 V
Differential input voltage, VID ±12 V
High-level enable-input voltage, VIH 2 V
Low-level enable-input voltage, VIL 0.8 V
High-level output current, IOH –400 µA
Low-level output current, IOL 8mA
Operating free-air temperature, TA0 70 °C
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of common-mode input voltage, supply
voltage and operating free-air temperature (unless otherwise noted) (see Note 3)
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
VIT+ Positive-going input threshold voltage 200 mV
VIT– Negative-going input threshold
voltage –200‡mV
Vhys Hysteresis voltage (VIT+ – VIT–)50 mV
VIK Enable-input clamp voltage II = –18 mA –1.5 V
VOH High-level output voltage VID = 200 mV, IOH = –400 µA, See Figure 1 2.7 V
VOL Low-level output voltage VID = –200 mV, IOL = 8 mA, See Figure 1 0.45 V
IOZ High-impedance-state output current VO = 0.4 V to 2.4 V ±20 µA
II
Line in
p
ut current
Other in
p
ut at 0 V
See Note 3
VI = 12 V 1
mA
I
I
Line
inp
u
t
c
u
rrent
Other
inp
u
t
at
0
V
,
See
Note
3
VI = –7 V –0.8
mA
IIH High-level enable-input current VIH(E) = 2.7 V 20 µA
IIL Low-level enable-input current VIL(E) = 0.4 V –100 µA
riInput resistance 12 kΩ
IOS Short-circuit output current VO = 0 –15 –85 mA
ICC
Su
p
ly current (total
p
ackage)
No load, Outputs enabled 16 24
mA
I
CC
S
u
pl
y
c
u
rrent
(total
package)
No load, Outputs disabled 18 27
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 as minimum, is used in this data sheet for threshold voltage
levels only.
NOTE 3: Refer to ANSI Standard RS-485 for exact conditions.
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
tPHL Propagation delay time, high- to low-level output VID = –2.5 V to 2.5 V, 9 18 27 ns
tPLH Propagation delay time, low- to high-level output CL = 15 pF, See Figure 2 9 18 27 ns
tPZH Output enable time to high level
CL=15
p
F
See Figure 3
4 12 18 ns
tPZL Output enable time to low level
C
L =
15
pF
,
See
Fig
u
re
3
6 13 21 ns
tPHZ Output disable time from high level
CL=15
p
F
See Figure 3
10 21 27 ns
tPLZ Output disable time from low level
C
L =
15
pF
,
See
Fig
u
re
3
8 15 25 ns
†All typical values are at VCC = 5 V, TA = 25°C.
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
VOH
(–)
IOH
(+)
IOL
2 V
VID
VOL
Figure 1. VOH, VOL
VOL
VOH
0 V
3 V
Output
Input
tPHL
tPLH
1.3 V1.3 V
1.5 V1.5 V
CL = 15 pF
(see Note B)
1.5 V
2 V
TEST CIRCUIT VOLTAGE WAVEFORMS
50 ΩOutput
Generator
(see Note A)
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, duty cycle = 50%, tr = tf = 6 ns.
B. CL includes probe and jig capacitance.
Figure 2. Propagation Delay Times
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
1.5 V
VOLTAGE WAVEFORMS
TEST CIRCUIT
tPLZ
tPZL
1.4 V
tPHZ
SW2 Closed
tPHZ
Output
Input 1.5 V 0 V
VOH
3 V
SW1 to 1.5 V
SW3 Closed
SW3 Closed
SW2 Open
SW1 to 1.5 V
tPZH
3 V
tPZH
0 V
VOH
0 V
1.5 V
1.5 V
Input
Output Output
3 V
SW3 Closed
1.4 V
0 V
VOL
tPZL SW1 to –1.5 V
SW2 Closed
1.5 V
4.5 V SW3 Open
SW2 Closed
SW1 to –1.5 V
tPZL
1.5 V
5 V
SW2
See Note C
SW3
5 kΩ
51 Ω
SW 1
–1.5 V
1.5 V
VOL
0 V
Output
CL = 15 pF
(see Note B)
Output
2 kΩ
0.5 V
0.5 V
Generator
(see Note A)
3 V
Input
3 V
Input
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, duty cycle = 50%, tr = tf = 6 ns.
B. CL includes probe and jig capacitance.
C. All diodes are 1N916 or equivalent.
Figure 3. Enable and Disable Times
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
SN75ALS175N ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN75ALS175NE4 ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
SN75ALS175NSLE OBSOLETE SO NS 16 TBD Call TI Call TI
SN75ALS175NSR ACTIVE SO NS 16 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN75ALS175NSRE4 ACTIVE SO NS 16 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN75ALS175NSRG4 ACTIVE SO NS 16 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
(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 4-Jun-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
SN75ALS175NSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 11-Mar-2008
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN75ALS175NSR SO NS 16 2000 346.0 346.0 33.0
PACKAGE MATERIALS INFORMATION
www.ti.com 11-Mar-2008
Pack Materials-Page 2
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