SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
D
D
D
D
D
D
D
D
D
Meet or Exceed the Requirements of ANSI
Standards EIA/TIA-422-B and EIA/TIA-423-A
Meet ITU Recommendations V.10 and V.11
Designed to Operate Up to 20 Mbaud
– 7 V to 7 V Common-Mode Input Voltage
Range With 200-mV Sensitivity
3-State TTL-Compatible Outputs
High Input Impedance . . . 12 kΩ Min
Input Hysteresis . . . 120 mV Typ
Single 5-V Supply Operation
Low Supply Current Requirement
35 mA Max
Improved Speed and Power Consumption
Compared to MC3486
SN55ALS195 . . . J OR W PACKAGE
SN75ALS195 . . . J OR N 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
SN55ALS195 . . . FK PACKAGE
(TOP VIEW)
1A
1B
NC
VCC
4B
D
description
1Y
1, 2EN
NC
2Y
2A
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
4A
4Y
NC
3, 4EN
3Y
2B
GND
NC
3B
3A
The SN55ALS195 and SN75ALS195 are four
differential line receivers with 3-state outputs
designed using advanced low-power Schottky
technology. This technology provides combined
improvements in die design, tooling production,
and wafer fabrication, which in turn, provide lower
power consumption and permit much higher data
throughput than other designs. The devices meet
the specifications of ANSI Standards EIA/
TIA-422-B and EIA/TIA-423-A and ITU Recommendations V.10 and V.11. The 3-state outputs
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.
NC – No internal connection
† For surface-mount package, see the SN75ALS199.
The devices are 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
± 200 mV over a common-mode input voltage range of ± 7 V. The devices also feature an active-high enable
function for each of two receiver pairs. The SN55ALS195 and SN75ALS195 are designed for optimum
performance when used with the SN55ALS194 and SN75ALS194 quadruple differential line drivers.
The SN55ALS195 is characterized for operation over the full military temperature range of – 55°C to 125°C. The
SN75ALS195 is characterized for operation from 0°C to 70°C.
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
SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
FUNCTION TABLE
(each receiver)
DIFFERENTIAL INPUTS
A–B
ENABLE
EN
OUTPUT
Y
VID ≥ 0.2 V
– 0.2 V < VID < 0.2 V
H
H
H
?
VID ≤ – 0.2 V
X
H
L
L
Z
Open
H
H
H = high level, L = low level, X = irrelevant, ? = indeterminate,
Z = high impedance (off)
logic symbol†
1, 2EN
1A
1B
2A
2B
4
logic diagram
EN
1, 2EN
2
3
1
6
5
7
1Y
1A
1B
3A
3B
4A
4B
12
10
EN
2B
3Y
13
15
3, 4EN
1Y
6
7
5
2Y
12
4Y
3A
3B
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
4A
Pin numbers shown are for the J, N, and W packages.
2
3
1
11
9
14
2
2Y
2A
3, 4EN
4
POST OFFICE BOX 655303
4B
• DALLAS, TEXAS 75265
10
9
14
15
11
13
3Y
4Y
SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
schematics of inputs and outputs
EQUIVALENT OF EACH A OR B INPUT
VCC
EQUIVALENT OF EN INPUTS
EQUIVALENT OF ALL OUTPUTS
VCC
VCC
3 kΩ
NOM
50 kΩ
NOM
22 kΩ
NOM
18 kΩ
NOM
Input
Output
Input
300 kΩ
NOM
VCC (A)
or
GND (B)
2 kΩ
NOM
GND
GND
GND
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, A or B inputs, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±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: SN55ALS195 . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN75ALS195 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Case temperature for 60 seconds, TC: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J, N, or W package . . . . . . . . . . . . . 300°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 conditons 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
TA = 125°C
POWER RATING
FK
1375 mW
11.0 mW/°C
880 mW
275 mW
J (SN55ALS195)
1375 mW
11.0 mW/°C
880 mW
275 mW
J (SN75ALS195)
1025 mW
8.2 mW/°C
656 mW
N/A
N
1150 mW
9.2 mW°C
736 mW
N/A
W
1000 mW
8.0 mW/°C
640 mW
200 mW
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3
SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
recommended operating conditions
SN55ALS195
Supply voltage, VCC
SN75ALS195
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.75
5
5.25
V
±7
V
±12
V
±7
Common-mode input voltage, VIC
±12
Differential input voltage, VID
High-level input voltage, VIH
2
Low-level input voltage, VIL
High-level output current, IOH
Low-level output current, IOL
Operating free-air temperature, TA
UNIT
MIN
– 55
2
V
0.8
0.8
– 400
– 400
µA
16
16
mA
70
°C
125
0
V
electrical characteristics over recommended ranges of common-mode input voltage, supply
voltage, and operating free-air temperature (unless otherwise noted)
TEST CONDITIONS†
PARAMETER
VIT+
Positive-going input threshold
voltage
VIT–
Negative-going input threshold
voltage
Vhys
VIK
Hysteresis voltage (VIT + – VIT –)
VOH
High-level output voltage
VOL
Low level output voltage
Low-level
IOZ
g
High-impedance-state
output current
Enable-input clamp voltage
MIN
TYP‡
MAX
UNIT
200
mV
– 200§
mV
120
mV
VCC = MIN,
VCC = MIN,
See Figure 1
II = – 18 mA
VID = 200 mV,
VCC = MIN,
VID = – 200 mV
mV,
See Figure 1
IOL = 8 mA
0.45
IOL = 16 mA
0.5
VCC = MAX,
VO = 2.7 V
VIL = 0.8 V,
VID = – 3 V,
VCC = MAX,
VO = 0.5 V
VIL = 0.8 V,
VID = 3 V,
VI = 15 V
VI = –15 V
II
Line input current
Other input at 0 V,,
See Note 3
VCC = MIN,
VCC = MAX,
IIH
High level enable
High-level
enable-input
input current
VCC = MAX
VIH = 2.7 V
VIH = 5.25 V
IIL
ri
Low-level enable-input current
VCC = MAX,
VIL = 0.4 V
IOS
Short-circuit output current
– 1.5
IOH = – 400 µA,
VID = 3 V,
3.6
V
V
20
µA
– 20
0.7
1.2
–1
– 1.7
20
100
– 100
Input resistance
VCC = MAX,
See Note 4
2.5
V
VO = 0,
12
18
– 15
– 78
mA
µA
µA
kΩ
– 130
mA
ICC
Supply current
VCC = MAX,
Outputs disabled
22
35
mA
† For conditions shown as MIN or MAX, use the appropriate values specified under recommended operating conditions.
‡ 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.
NOTES: 3. Refer to ANSI Standards EIA/TIA-422-B and EIA/TIA-423-A for exact conditions.
4. Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
4
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SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
switching characteristics, VCC = 5 V, CL = 15 pF, 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
MIN
VID = 0 to 3 V
V, See Figure 2
Propagation delay time, high- to low-level output
See Figure 3
Output enable time to low level
See Figure 3
Output disable time from low level
TYP
MAX
UNIT
15
22
ns
15
22
ns
13
25
10
25
19
25
17
22
ns
ns
PARAMETER MEASUREMENT INFORMATION
VID
VOH
IOL
(+)
VOL
IOH
(–)
2V
Figure 1. VOH, VOL
3V
Generator
(see Note A)
Output
50 Ω
Input
1.5 V
1.5 V
0V
CL = 15 pF
(see Note B)
tPLH
tPHL
VOH
1.5 V
1.3 V
1.3 V
Output
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. Test CIrcuit and Voltage Waveforms
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• DALLAS, TEXAS 75265
5
SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
SW1
Output
2.5 V
– 2.5 V
SW2
2 kΩ
5V
5 kΩ
See Note C
SW3
CL = 15 pF
(see Note B)
Generator
(see Note A)
51 Ω
TEST CIRCUIT
tPZL
tPZH
SW1 to 2.5 V
1.5 V SW2 Open
SW3 Closed
0V
Input
3V
3V
1.5 V
Input
0V
tPZH
tPZL
VOH
Output
4.5 V
1.5 V
Output
1.5 V
0V
SW1 to 2.5 V
SW2 Closed
SW3 Closed
1.5 V
Input
0V
0V
tPHZ
Output
0.5 V
3V
3V
1.5 V
Input
VOL
tPLZ
tPHZ
SW1 to – 2.5 V
SW2 Closed
SW3 Open
SW1 to – 2.5 V
SW2 Closed
SW3 Closed
tPLZ
1.4 V
VOH
Output
0.5 V
VOL
1.4 V
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.
C. All diodes are 1N3064 or equivalent.
Figure 3. Test Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
TYPICAL CHARACTERISTICS†
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
4
5
VID = 200 mV
VIC = 0
RL = 8 kΩ to GND
TA = 25°C
VCC = 5.5 V
VCC = 5 V
VO – Output Voltage – V
VO – Output Voltage – V
4
TA = 125°C
TA = 70°C
TA = 25°C
TA = 0°C
VCC = 4.5 V
3
2
3
TA = – 55°C
2
1
VCC = 5 V
VID = 200 mV
VIC = 0
RL = 8 kΩ to GND
1
0
0
0
0.5
1
2
1.5
2.5
0
3
0.5
1
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
5
VO – Output Voltage – V
VCC = 4.5 V
VO – Output Voltage – V
OUTPUT VOLTAGE
vs
ENABLE VOLTAGE
VID = – 200 mV
VIC = 0
RL = 1 kΩ to VCC
TA = 25°C
VCC = 5 V
4
3
2
1
TA = – 55°C
TA = 0°C
4
TA = 25°C
TA = 70°C
3
TA = 125°C
2
VCC = 5 V
VID = – 200 mV
VIC = 0
RL = 1 kΩ to VCC
1
0
0.5
1
3
6
VCC = 5.5 V
0
2.5
Figure 5
Figure 4
5
2
Enable Voltage – V
Enable Voltage – V
6
1.5
1.5
2
2.5
3
0
0
0.5
Enable Voltage – V
1
1.5
2
2.5
3
Enable Voltage – V
Figure 6
Figure 7
† Data for temperatures below 0°C and above 70°C, and below 4.75 V and above 5.25 V, are applicable to SN55ALS195 circuits only.
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SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
TYPICAL CHARACTERISTICS†
OUTPUT VOLTAGE
vs
DIFFERENTIAL INPUT VOLTAGE
4.5
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
5
HIGH-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
3.5
3
2.5
2
VIT –
VIT +
1.5
1
0.5
0
– 200 – 150 – 100 – 50
0
50
100
150
3.5
IOH = – 400 µA
3
2.5
2
1.5
1
0.5
VCC = 5 V
VID = 200 mV
VIC = 0
0
– 75 – 50 – 25
200
0
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
VOH – High-Level Output Voltage – V
4
3.5
3
2.5
2
75
100
VCC = 5.5 V
VCC = 5 V
VCC = 4.5 V
1.5
1
0.5
5
VCC = 5 V
VID = 200 mV
VIC = 0
4.5
4
3.5
TA = – 55°C
3
TA = 0°C
2.5
TA = 25°C
2
TA = 70°C
1.5
TA = 125°C
1
0.5
0
0
0 – 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 – 100
IOH – High-Level Output Current – mA
0
– 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 – 100
IOH – High-Level Output Current – mA
Figure 11
Figure 10
† Data for temperatures below 0°C and above 70°C, and below 4.75 V and above 5.25 V, are applicable to SN55ALS195 circuits only.
8
125
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
VOH – High-Level Output Voltage – V
VID = 200 mV
VIC = 0
TA = 25°C
4.5
50
Figure 9
Figure 8
5
25
TA – Free-Air Temperature – °C
VID – Differential Input Voltage – mV
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SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
TYPICAL CHARACTERISTICS†
LOW-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
VOL – Low-Level Output Voltage – V
0.40
0.35
VCC = 5 V
VID = – 200 mV
VIC = 0
0.30
0.25
IO = 8 mA
0.20
0.15
IO = 0
0.10
0.05
0
– 75 – 50 – 25
0
25
50
75
100
125
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
0.7
VOL – Low-Level Output Voltage – V
VOL – Low-Level Output Voltage – V
0.8
VCC = 4.5 V
VCC = 5 V
VCC = 5.5 V
0.6
0.5
0.4
0.3
0.2
VID = – 200 mV
VIC = 0
TA = 25°C
0.1
VCC = 5 V
VID = – 200 mA
VIC = 0
0.7
0.6
TA = 70°C
0.5
TA = 0°C
TA = 125°C
0.4
TA = – 55°C
0.3
TA = 25°C
0.2
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
† Data for temperatures below 0°C and above 70°C, and below 4.75 V and above 5.25 V, are applicable to SN55ALS195 circuits only.
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9
SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
TYPICAL CHARACTERISTICS†
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
50
VCC = 5.5 V
25
I CC – Supply Current – mA
40
I CC – Supply Current – mA
30
VID = – 200 mV
VIC = 0
IO = 0
TA = 25°C
45
35
30
Disabled
25
Enabled
20
15
10
VCC = 5 V
20
VCC = 4.5 V
15
10
VID = – 200 mV
Outputs Enabled
IO = 0
5
5
0
1
0
2
3
4
5
6
7
0
– 75
8
– 50 – 25
0
Figure 15
75
100
125
SUPPLY CURRENT
vs
FREQUENCY
30
40
35
VCC = 5.5 V
25
I CC – Supply Current – mA
I CC – Supply Current – mA
50
Figure 16
SUPPLY CURRENT
vs
DIFFERENTIAL INPUT VOLTAGE
VCC = 5 V
20
VCC = 4.5 V
15
10
5
25
TA – Free-Air Temperature – °C
VCC – Supply Voltage – V
– 100
25
20
15
10
IO = 0
Outputs Enabled
VIC = 0
TA = 25°C
0
– 200
30
VCC = 5 V
VI = ± 1.5-V Square Wave
CL = 15 pF
Four Channels Driven
TA = 25°C
5
0
100
200
0
10 k
100 k
1M
10 M
100 M
f – Frequency – Hz
VID – Differential Input Voltage – mV
Figure 17
Figure 18
† Data for temperatures below 0°C and above 70°C, and below 4.75 V and above 5.25 V, are applicable to SN55ALS195 circuits only.
10
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SN55ALS195, SN75ALS195
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS010D – JUNE 1986 – REVISED MAY 1995
TYPICAL CHARACTERISTICS†
INPUT RESISTANCE
vs
FREE-AIR TEMPERATURE
INPUT CURRENT
vs
INPUT VOLTAGE TO GND
3
30
TA = 25°C
2
I I – Input Current – mA
ri – Input Resistance – k Ω
25
20
15
10
5
1
0
–1
–2
0
– 75 – 50
– 25
0
25
50
75
100
–3
– 20
125
– 15
– 10
TA – Free-Air Temperature – °C
SWITCHING TIME
vs
FREE-AIR TEMPERATURE
20
VCC = 5 V
CL = 15 pF
tpd – Propagation Delay Time – ns
18
tPHZ
Switching Time – ns
tPLZ
tPHL
tPLZ
tPHL
tPLH
15
tPZL
tPHL
10
tPZH
5
10
15
20
PROPAGATION DELAY TIME
vs
SUPPLY VOLTAGE
30
20
0
Figure 20
Figure 19
25
–5
VI – Input Voltage to GND – V
tPZL
tPHZ
5
CL = 15 pF
TA = 25°C
tPHL
16
14
tPLH
12
10
8
6
4
2
0
– 75 – 50
– 25
0
25
50
75
100
TA – Free-Air Temperature – °C
125
0
4.5 4.6 4.7 4.8 4.9
5
5.1
5.2 5.3 5.4 5.5
VCC – Supply Voltage – V
Figure 21
Figure 22
† Data for temperatures below 0°C and above 70°C, and below 4.75 V and above 5.25 V, are applicable to SN55ALS195 circuits only.
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