SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
D
D
D
D
D
D
D
D
D
Meets or Exceeds the Requirements of
ANSI EIA/TIA-422-B, EIA/TIA-423-B, and
RS-485
Meets ITU Recommendations V.10, V.11,
X.26, and X.27
Designed for Multipoint Bus Transmission
on Long Bus Lines in Noisy Environments
Low Supply Current Requirement
27 mA Max
Common-Mode Input Voltage Range of
– 12 V to 12 V
Input Sensitivity . . . ± 200 mV
Input Hysteresis . . . 50 mV Typ
High Input Impedance . . . 12 kΩ Min
Operates From Single 5-V Supply
N OR NS† PACKAGE
(TOP VIEW)
1B
1A
1Y
1,2EN
2Y
2A
2B
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
4B
4A
4Y
3,4EN
3Y
3A
3B
† The NS package is only available left-ended taped and reeled
(order device SN75ALS175NSLE).
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
A–B
ENABLES
EN
OUTPUT
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)
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
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
logic symbol†
4
1,2EN
logic diagram (positive logic)
4
EN
1,2EN
2
1A
3
1
1B
6
2A
1Y
1B
5
7
1A
2A
3,4EN
14
4A
3,4EN
11
9
3B
1Y
6
5
7
2Y
2B
EN
10
3A
3
1
2Y
2B
12
2
3Y
13
15
12
3A
4Y
4B
10
9
11
3Y
3B
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
4A
4B
14
15
13
4Y
schematics of inputs and outputs
EQUIVALANT OF EACH A OR B INPUT
VCC
EQUIVALANT OF EACH ENABLE INPUT
VCC
VCC
17 kΩ
NOM
Input
288 kΩ
NOM
VCC (A)
or
GND (B)
17 kΩ
NOM
70 Ω
EN
Input
Output
17 kΩ
NOM
GND
GND
GND
2
TYPICAL OF ALL OUTPUTS
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
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 affect 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
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
N
1150 mW
9.2 mW/°C
736 mW
NS
625 mW
5.0 mW/°C
400 mW
PACKAGE
recommended operating conditions
Supply voltage, VCC
MIN
NOM
MAX
UNIT
4.75
5
5.25
V
± 12
V
± 12
V
Common-mode input voltage, VIC
Differential input voltage, VID
High-level enable-input voltage, VIH
2
Low-level enable-input voltage, VIL
V
0.8
High-level output current, IOH
Low-level output current, IOL
Operating free-air temperature, TA
0
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
V
– 400
µA
8
mA
70
°C
3
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
electrical characteristics over recommended ranges of common-mode input voltage, supply
voltage and operating free-air temperature (unless otherwise noted) (see Note 3)
PARAMETER
VIT+
Positive-going input threshold voltage
VIT–
Negative-going input threshold
voltage
Vhys
VIK
Hysteresis voltage (VIT + – VIT –)
VOH
VOL
High-level output voltage
IOZ
High-impedance-state output current
Enable-input clamp voltage
Low-level output voltage
TEST CONDITIONS
TYP†
MAX
UNIT
200
mV
–200‡
mV
50
II = – 18 mA
VID = 200 mV,
VID = – 200 mV,
VO = 0.4 V to 2.4 V
II
Line input current
Other input at 0 V
V,
IIH
IIL
High-level enable-input current
VIH(E) = 2.7 V
VIL(E) = 0.4 V
ri
Input resistance
IOS
Short-circuit output current
ICC
Suply current (total package)
Low-level enable-input current
MIN
mV
– 1.5
IOH = – 400 µA,
IOL = 8 mA,
See Figure 1
2.7
V
See Figure 1
VI = 12 V
VI = – 7 V
See Note 3
V
0.45
V
±20
µA
1
– 0.8
mA
20
µA
– 100
µA
– 85
mA
12
kΩ
VO = 0
No load,
– 15
Outputs enabled
16
24
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
tPHL
tPLH
Propagation delay time, high- to low-level output
tPZH
tPZL
Output enable time to high level
Propagation delay time, low- to high-level output
Output enable time to low level
tPHZ Output disable time from high level
tPLZ
Output disable time from low level
† All typical values are at VCC = 5 V, TA = 25°C.
4
POST OFFICE BOX 655303
VID = – 2.5 V to 2.5 V,
CL = 15 pF,
See Figure 2
CL = 15 pF,
pF
See Figure 3
pF
CL = 15 pF,
See Figure 3
• DALLAS, TEXAS 75265
MIN
TYP†
MAX
9
18
27
ns
9
18
27
ns
4
12
18
ns
6
13
21
ns
10
21
27
ns
8
15
25
ns
UNIT
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
VID
VOH
VOL
2V
IOH
(–)
IOL
(+)
Figure 1. VOH, VOL
Generator
(see Note A)
Output
50 Ω
3V
Input
1.5 V
1.5 V
0V
CL = 15 pF
(see Note B)
1.5 V
tPLH
tPHL
VOH
Output
1.3 V
1.3 V
VOL
2V
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 = tf = 6 ns.
B. CL includes probe and jig capacitance.
Figure 2. Propagation Delay Times
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
Output
SW 1
1.5 V
2 kΩ
–1.5 V
SW2
5V
Generator
(see Note A)
See Note C
5 kΩ
CL = 15 pF
(see Note B)
SW3
51 Ω
TEST CIRCUIT
Input
tPZH
Output
3V
1.5 V
0 V SW1 to 1.5 V
SW2 Open
SW3 Closed
VOH
1.5 V
0V
3V
Input
tPZL
Output
tPZL
tPZH
3V
Input
1.5 V
0 V SW1 to –1.5 V
SW2 Closed
SW3 Open
4.5 V
1.5 V
VOL
3V
Input
1.5 V
0V
0V
SW1 to 1.5 V
SW2 Closed
SW3 Closed
tPHZ
3V
1.5 V
tPZL
VOH
Output
0.5 V
1.4 V
Output
SW1 to –1.5 V
SW2 Closed
SW3 Closed
0.5 V
1.4 V
VOL
tPHZ
tPLZ
VOLTAGE WAVEFORMS
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
6
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)
SN75ALS175N
ACTIVE
PDIP
N
16
25
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN75ALS175N
SN75ALS175NSR
ACTIVE
SO
NS
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
75ALS175
(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