SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
D
D
D
D
D
D
D
D
D
D
D
D OR N PACKAGE
(TOP VIEW)
Meets or Exceeds the Requirements of ITU
Recommendations V.10, V.11, X.26, and
X.27
Designed for Multipoint Bus Transmission
on Long Bus Lines in Noisy Environments
Designed to Operate Up to 20 Mbaud
3-State Outputs
Common-Mode Input Voltage Range
– 7 V to 7 V
Input Sensitivity . . . ±300 mV
Input Hysteresis . . . 120 mV Typ
High-Input Impedance . . . 12 kΩ Min
Operates from Single 5-V Supply
Low Supply-Current Requirement
35 mA Max
Improved Speed and Power Consumption
Compared to AM26LS32A
1B
1A
1Y
G
2Y
2A
2B
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
4B
4A
4Y
G
3Y
3A
3B
description
The SN75ALSI97 is a monolithic, quadruple line receiver with 3-state outputs designed using advanced,
low-power, Schottky technology. This technology provides combined improvements in bar design, tooling
production, and wafer fabrication. This, in turn, provides significantly lower power requirements and permits
much higher data throughput than other designs. The device meets the specifications of ITU Recommendations
V.10, V.11, X.26, and X.27. It features 3-state outputs that permit direct connection to a bus-organized system
with a fail-safe design that ensures the outputs will always be high if the inputs are open.
The device is optimized for balanced, multipoint bus transmission at rates up to 20 megabits per second. The
input features high-input impedance, input hysteresis for increased noise immunity, and an input sensitivity of
± 300 mV over a common-mode input voltage range of – 7 V to 7 V. It also features active-high and active-low
enable functions that are common to the four channels. The SN75ALS197 is designed for optimum performance
when used with the SN75ALS192 quadruple differential line driver.
The SN75ALS197 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each receiver)
ENABLES
G
G
OUTPUT
Y
VID ≥ 0.3 V
H
X
X
L
H
H
– 0.3 V < VID < 0.3 V
H
X
X
L
?
?
VID ≤ – 0.3 V
H
X
X
L
L
L
X
L
H
Z
Open
H
X
X
L
H
H
DIFFERENTIAL INPUTS
A–B
H = high level, L = low level, X = irrelevant, ? = indeterminate,
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.
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1
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
logic symbol†
G
G
1A
1B
2A
2B
3A
3B
4A
4B
4
logic diagram (positive logic)
≥1
G
EN
12
4
12
G
2
3
1
1A
1Y
1B
6
5
7
10
11
9
14
13
15
2A
2Y
2B
2
3
1Y
5
2Y
1
6
7
3Y
3A
4Y
3B
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
4A
4B
10
9
11 3Y
14
13
15
4Y
schematics of inputs and outputs
EQUIVALENT OF EACH A OR B INPUT
EQUIVALENT OF G OR G INPUTS
VCC
VCC
3 kΩ
NOM
EQUIVALENT OF ALL OUTPUTS
VCC
22 kΩ
NOM
50 kΩ
NOM
18 kΩ
NOM
Input
Output
300 kΩ
NOM
VCC (A)
or
GND (B)
Input
2 kΩ
NOM
GND
GND
GND
2
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SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – 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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 V
Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 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
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING
FACTOR
TA = 70°C
POWER RATING
D
950 mW
7.6 mW/°C
608 mW
N
1150 mW
9.2 mW/°C
736 mW
recommended operating conditions
MIN
Supply voltage, VCC
4.75
Common-mode input voltage, VIC
Differential input voltage, VID
High-level input voltage, VIH
NOM
MAX
5
5.25
V
±7
V
±12
V
2
Low-level 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
UNIT
V
–400
µA
16
mA
70
°C
3
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
electrical characteristics over recommended range of common-mode input voltage, supply
voltage, and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIT+
VIT–
Positive-going input threshold voltage
Vhys
VIK
Hysteresis voltage (VIT+ – VIT –)
See Figure 4
Enable-input clamp voltage
VOH
High-level output voltage
II = –18 mA
VID = 300 mV,
MIN
TYP†
MAX
UNIT
300
mV
– 300‡
Negative-going input threshold voltage
mV
120
mV
– 1.5
VOL
Low level output voltage
Low-level
VID = – 300 mV
IOZ
High impedance state output current
High-impedance-state
VCC = 5
5.25
25 V
II
Line input current
Other input at 0 V,,
See Note 3
IH
High level enable
High-level
enable-input
input current
IIL
Low-level enable-input current
IOH = – 400 µA
IOL = 8 mA
2.7
3.6
V
0.45
IOL = 16 mA
VO = 2.4 V
0.5
VOH = 0.4 V
VI = 15 V
– 20
20
VI = –15 V
VIH = 2.7 V
0.7
1.2
– 1.0
– 1.7
20
100
VIH = 5.25 V
VIL = 0.4 V
– 100
Input resistance
12
V
18
V
µA
mA
µA
µA
kΩ
IOS
Short-circuit output current§
VID = 3 V,
VO = 0
– 15
– 78 – 130
mA
ICC
Supply current
Outputs disabled
22
35
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The algebraic convention, in which the less positive limit is designated minimum, is used in this data sheet for threshold voltage levels only.
§ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
NOTE 3: Refer to ANSI Standard EIA/TIA-422-B and EIA/TIA-423-B for exact conditions.
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
tPLH
tPHL
Propagation delay time, low- to high-level output
tPZH
tPZL
Output enable time to high level
tPHZ
tPLZ
Output disable time from high level
4
Propagation delay time, high- to low-level output
Output enable time to low level
Output disable time from low level
VID = – 2.5 V to 2.5 V,,
See Figure 2
CL = 15 pF,,
CL = 15 pF,
pF
See Figure 3
CL = 15 pF,
pF
See Figure 3
POST OFFICE BOX 655303
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MIN
TYP
MAX
UNIT
15
22
ns
15
22
ns
13
25
11
25
13
25
15
22
ns
ns
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
VID
VOH
IOL
IOH
VOL
2V
Figure 1. VOH and VOL Test Circuit
2.5 V
Generator
(see Note A)
Input
50 Ω
0V
0V
Output
CL = 15 pF
(see Note B)
– 2.5 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%, ZO = 50 Ω,
tr ≤ 6 ns, tf ≤ 6 ns.
B. CL includes probe and jig capacitance.
Figure 2. tPLH and tPHL Test Circuit and Voltage Waveforms
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5
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
Test
Point
VCC
RL = 2 kΩ
S1
From Output
Under Test
See Note B
CL
(see Note A)
5 kΩ
S2
LOAD CIRCUIT
≤ 5 ns
90%
Enable
G 10%
1.3 V
≤ 5 ns
3V
90%
1.3 V
≤ 5 ns
10%
0V
Enable
G 10%
90%
90%
1.3 V
1.3 V
0V
See Note C
90%
1.3 V
10%
10%
S1 Open
S2 Closed
3V
90%
Enable
G 1.3 V
1.3 V
tPHZ
≈ 1.4 V
90%
1.3 V
10%
0V
0.5 V
VOH
tPZH
Output
3V
10%
See Note C
90%
Enable
G 1.3 V
≤ 5 ns
10%
tPZL
Output
S1 Closed
S2 Open
S1 Closed
S2 Closed
tPLZ
1.3 V
S1 Closed
S2 Closed
VOLTAGE WAVEFORMS FOR tPHZ and tPZH
VOLTAGE WAVEFORMS FOR tPLZ and tPZL
Figure 3. tPHZ, tPZH, tPLZ, and tPZL Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
0V
≈ 1.4 V
VOL
0.5 V
NOTES: A. CL includes probe and jig capacitance.
B. All diodes are 1N3064 or equivalent.
C. Enable G is tested with G high; G is tested with G low.
6
3V
• DALLAS, TEXAS 75265
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
4
5
VID = 300 mV
VIC = 0
RL = 8 kΩ to GND
TA = 25°C
VO – Output Voltage – V
4
TA = 70°C
TA = 25°C
TA = 0°C
3.5
VCC = 5.5 V
VO – Output Voltage – V
4.5
VCC = 5 V
3.5
VCC = 4.5 V
3
2.5
2
1.5
3
2.5
2
1.5
1
VCC = 5 V
VID = 300 mV
VIC = 0
RL = 8 kΩ to GND
1
0.5
0.5
0
0
0
0.5
1
1.5
2
2.5
0
3
0.5
1
2
2.5
3
Enable Voltage – V
Enable Voltage – V
Figure 5
Figure 4
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
6
6
VCC = 5.5 V
VCC = 5 V
VID = – 300 mV
VIC = 0
RL = 1 kΩ to VCC
TA = 25°C
VCC = 4.5 V
5
VO – Output Voltage – V
5
VO – Output Voltage – V
1.5
4
3
2
TA = 0°C
TA = 25°C
4
TA = 70°C
3
2
VCC = 5 V
VID = – 300 mV
VIC = 0
RL = 1 kΩ to VCC
1
1
0
0
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
Enable Voltage – V
Enable Voltage – V
Figure 6
Figure 7
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7
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE
vs
DIFFERENTIAL INPUT VOLTAGE
HIGH-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
5
VO – Output Voltage – V
4
4
VCC = 5 V
VIC = –12 V to 12 V
IO = 0
TA = 25°C
IOH = 0
VOH – High-Level Output Voltage – V
4.5
3.5
3
2.5
2
VIT –
VIT +
1.5
1
3.5
IOH = – 400 µA
3
2.5
2
1.5
1
VCC = 5 V
VID = 300 mV
VIC = 0
0.5
0.5
0
– 200 – 150 – 100 – 50
0
50
100
150
0
200
0
10
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
5
VID = 300 mV
VIC = 0
TA = 25°C
4.5
4
3.5
VCC = 5.5 V
VCC = 5 V
2.5
VCC = 4.5 V
2
1.5
1
VOH – High-Level Output Voltage – V
VOH – High-Level Output Voltage – V
40
50
60
70
80
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
5
VCC = 5 V
VID = 300 mV
VIC = 0
4.5
4
3.5
3
TA = 0°C
2.5
TA = 25°C
2
TA = 70°C
1.5
1
0.5
0.5
0
0
0 – 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 – 100
0 – 10 – 20 – 30 –40 – 50 –60 – 70 – 80 – 90 – 100
IOH – High-Level Output Current – mA
IOH – High-Level Output Current – mA
Figure 10
8
30
Figure 9
Figure 8
3
20
TA – Free-Air Temperature – °C
VID – Differential Input Voltage – mV
Figure 11
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• DALLAS, TEXAS 75265
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
LOW-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
VOL – Low-Level Output Volatge – V
0.4
VCC = 5 V
VID = – 300 mV
VIC = 0
0.35
0.3
0.25
IO = 8 mA
0.2
0.15
IO = 0
0.1
0.05
0
0
10
20
30
40
50
60
70
80
TA – Free-Air Temperature – °C
Figure 12
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
0.8
VCC = 4.5 V
0.7
VOL – Low-Level Output Voltage – V
VOL – Low-Level Output Voltage – V
0.8
VCC = 5 V
0.6
VCC = 5.5 V
0.5
0.4
0.3
0.2
VID = – 300 mV
VIC = 0
TA = 25°C
0.1
TA = 70°C
0.7
TA = 25°C
0.6
TA = 0°C
0.5
0.4
0.3
0.2
VCC = 5 V
VID = – 300 mV
VIC = 0
0.1
0
0
0
10
20
30
40
50
60
70
80
IOL – Low-Level Output Current – mA
0
10
20
30
40
50
60
70
80
IOL – Low-Level Output Current – mA
Figure 14
Figure 13
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9
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
50
VID = – 300 mV
VIC = 0
IO= 0
TA = 25°C
40
30
I CC – Supply Current – mA
45
I CC – Supply Current – mA
SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
35
30
Disabled
25
Enabled
20
15
VCC = 5.5 V
25
VCC = 5 V
20
VCC = 4.5 V
15
10
10
VID = – 300 mV
Outputs Enabled
IO = 0
5
5
0
1
0
3
2
4
5
6
7
0
8
0
10
VCC – Supply Voltage – V
20
30
50
60
70
80
TA – Free-Air Temperature – °C
Figure 16
Figure 15
SUPPLY CURRENT
vs
FREQUENCY
SUPPLY CURRENT
vs
DIFFERENTIAL INPUT VOLTAGE
40
30
35
VCC = 5.5 V
25
I CC – Supply Current – mA
I CC – Supply Current – mA
40
VCC = 5 V
20
VCC = 4.5 V
15
10
30
VCC = 5 V
VI = ± 1.5-V Square Wave
CL = 15 pF
Four Channels Driven
TA = 25°C
25
20
15
10
5
IO = 0
Outputs Enabled
VIC = 0
TA = 25°C
0
– 200
– 100
5
0
100
200
0
10 k
1M
f – Frequency – Hz
VID – Differential Input Voltage – mV
Figure 17
10
100 k
Figure 18
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10 M
100 M
SN75ALS197
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS045B – JANUARY 1989 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
INPUT CURRENT
vs
INPUT VOLTAGE TO GND
INPUT RESISTANCE
vs
FREE-AIR TEMPERATURE
3
30
TA = 25°C
2
I I – Input Current – mA
rI – Input Resistance – k Ω
25
20
15
10
1
0
–1
5
–2
0
–3
– 20
0
10
20
30
40
50
60
70
80
– 15
TA – Free-Air Temperature – °C
– 10
–5
5
10
15
20
VI – Input Voltage to GND – V
Figure 19
Figure 20
PROPAGATION DELAY TIME
vs
SUPPLY VOLTAGE
SWITCHING TIME
vs
FREE-AIR TEMPERATURE
20
30
VCC = 5 V
CL = 15 pF
18
tPLH
tpd – Propagation Delay Time – ns
25
tPLZ
Switching Time – ns
0
20
tPHZ
tPZH
15
tPHL
10
tPZL
tPHZ
tPZH
CL = 15 pF
TA = 25°C
16
tPHL
14
tPLH
12
10
8
6
4
5
2
0
0
10
20
30
40
50
60
70
80
0
4.5
4.6
4.7
TA – Free-Air Temperature – °C
4.8
4.9
5
5.1
5.2
5.3 5.4
5.5
VCC – Supply Voltage – V
Figure 21
Figure 22
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11
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
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)
Samples
(4/5)
(6)
SN75ALS197D
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
75ALS197
Samples
SN75ALS197DR
ACTIVE
SOIC
D
16
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
75ALS197
Samples
SN75ALS197N
ACTIVE
PDIP
N
16
25
RoHS & Green
NIPDAU
N / A for Pkg Type
0 to 70
SN75ALS197N
Samples
SN75ALS197NSR
ACTIVE
SO
NS
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
0 to 70
75ALS197
Samples
(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