TI SN75ALS173

SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MAY 1995
D
D
D
D
D
D
D
D
D
D
N OR NS† PACKAGE
(TOP VIEW)
Meets or Exceeds the Requirements of
ANSI EIA/TIA-422-B, EIA/TIA-423-B, and
RS-485
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
3-State Outputs
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
Low Supply-Current Requirement
27 mA Max
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
† The NS package is only available left-end taped and
reeled (order device SN75ALS173 NSLE).
description
The SN75ALS173 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, RS-485, and several ITU
recommendations. Advanced low-power Schottky technology provides high speed without the usual power
penalty. The four receivers have an ORed pair of enables in common. Either G high or G low enables all of the
receivers. 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 SN75ALS173 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each receiver)
DIFFERENTIAL
A–B
02V
VID ≥ 0.2
– 0.2
0 2 V < VID < 0
0.2
2V
VID ≤ – 0.2
02V
X
Open Circuit
ENABLES
OUTPUT
Y
G
G
H
X
H
X
L
H
H
X
?
X
L
?
H
X
L
X
L
L
L
H
Z
H
X
H
X
L
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.
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1
SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MAY 1995
logic symbol†
4
G
≥1
12
G
logic diagram (positive logic)
G
EN
G
2
1A
3
1
1B
6
2A
5
7
2B
10
3A
11
9
3B
14
4A
13
15
4B
1A
1Y
1B
2Y
2A
2B
4
12
2
1
6
7
3
5
1Y
2Y
3Y
3A
4Y
3B
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
4A
4B
10
9
14
15
11
13
3Y
4Y
schematics of inputs and outputs
EQUIVALENT OF EACH A OR B INPUT
VCC
EQUIVALENT OF G OR G ENABLE INPUT
VCC
17 kΩ
NOM
Input
288 kΩ
NOM
VCC (A)
or
GND (B)
17 kΩ
NOM
70 Ω
VCC
Input
Output
17 kΩ
NOM
GND
GND
GND
2
TYPICAL OF ALL OUTPUTS
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SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – 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
PACKAGE
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
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 input voltage, VIH
G, G
Low-level input voltage, VIL
G, G
2
V
0.8
High-level output current, IOH
Low-level output current, IOL
Operating free-air temperature, TA
0
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V
–400
µA
8
mA
70
°C
3
SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – 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
TEST CONDITIONS
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
Input clamp voltage
MIN
TYP†
MAX
UNIT
200
mV
– 200‡
mV
50
G, G
Low-level output voltage
II = – 18 mA
VID = 200 mV,
– 1.5
IOH = – 400 µA,
IOL = 8 mA,
VID = – 200 mV,
VO = 0.4 V to 2.4 V
II
Line input current
IIH
IIL
High-level input current
G, G
Low-level input current
G, G
ri
Input resistance
IOS
Short-circuit output current
ICC
Supply current (total package)
mV
See Figure 1
2.7
V
See Figure 1
VI = 12 V
VI = – 7 V
Other input at 0 V
0.45
V
±20
µA
1
– 0.8
VIH = 2.7 V
VIL = 0.4 V
mA
20
µA
– 100
µA
– 85
mA
12
See Note 4
V
kΩ
– 15
No load,
Outputs enabled
16
24
No load,
Outputs disabled
18
27
mA
† All typical values are at VCC = 5 V and 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.
NOTES: 3. Refer to ANSI Standard RS-485 for exact conditions.
4. The duration of the short circuit should not cause the maximum package power dissipation to be exceeded.
switching characteristics, VCC = 5 V, CL = 15 pF, TA = 25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPHL
tPLH
Propagation delay time, high- to low-level output
VID = – 2.5 V to 2.5 V,,
See Figure 2
9
18
27
ns
Propagation delay time, low- to high-level output
9
18
27
ns
tPZH
tPZL
Output enable time to high level
See Figure 3
4
12
18
ns
Output enable time to low level
See Figure 4
6
13
21
ns
tPHZ
tPLZ
Output disable time from high level
See Figure 3
10
21
27
ns
Output disable time from low level
See Figure 4
8
15
25
ns
PARAMETER MEASUREMENT INFORMATION
VID
VOH
VOL
IOL
(+)
2V
Figure 1. VOH, VOL
4
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IOH
(–)
SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
Generator
(see Note A)
2.5 V
50 Ω
Output
Input
0V
0V
– 2.5 V
CL = 15 pF
(see Note B)
tPLH
tPHL
VOH
Output
1.3 V
1.3 V
VOL
2V
TEST CIRCUIT
VOLTAGE WAVEFORMS
Figure 2. Test Circuit and Voltage Waveforms
VCC
Output
2 kΩ
2.5 V
S1
3V
Input
CL
(see Note B)
1.3 V
0V
5 kΩ
Generator
(see Note A)
1.3 V
See Note C
tPHZ
tPZH
0.5 V
Output
S1 Open
2V
1.3 V
≈0
VOH
S1 Closed
≈ 1.4 V
See Note D
50 Ω
TEST CIRCUIT
VOLTAGE WAVEFORMS
Figure 3. Test Circuit and Voltage Waveforms
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, duty cycle = 50%, tr ≤ 6 ns, tf ≤ 6 ns,
ZO = 50 Ω.
B. CL includes probe and jig capacitance.
C. All diodes are 1N916 or equivalent.
D. To test the active-low enable G, ground G and apply an inverted input waveform to G.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
VCC
Output
2 kΩ
2.5 V
CL
(see Note B)
3V
Input
1.3 V
1.3 V
0V
5 kΩ
See Note C
tPZL
tPLZ
S2 Open
Generator
(see Note A)
2V
S2 Closed
Output
See Note D
≈ 1.4 V
1.3 V
VOL
S2
0.5 V
50 Ω
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 ≤ 6 ns,
tf ≤ 6 ns, ZO = 50 Ω.
B. CL includes probe and jig capacitance.
C. All diodes are 1N916 or equivalent.
D. To test the active-low enable G, ground G and apply an inverted input waveform to G.
Figure 4. Test Circuit and Voltage Waveforms
6
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