SNJ55ALS194FK [TI]
Quadruple Differential Line Driver 20-LCCC -55 to 125;
| 型号： | SNJ55ALS194FK |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Quadruple Differential Line Driver 20-LCCC -55 to 125 驱动 接口集成电路 驱动器 |
| 文件： | 总11页 (文件大小：148K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
SN55ALS194 . . . J OR W PACKAGE
SN75ALS194 . . . D OR N PACKAGE
(TOP VIEW)
Meet or Exceed the Requirements of ANSI
Standard EIA/TIA-422-B and ITU
Recommendation V.11
Designed to Operate Up to 20 Mbaud
3-State TTL-Compatible Outputs
Single 5-V Supply Operation
1A
1Y
V
CC
15 4A
14 4Y
1
2
3
4
5
6
7
8
16
1Z
13
12
11
10
9
1, 2EN
2Z
4Z
High Output Impedance in Power-Off
Condition
3, 4EN
3Z
2Y
Two Pairs of Drivers, Independently
Enabled
2A
3Y
GND
3A
Designed as Improved Replacements for
the MC3487
description
SN55ALS194 . . . FK PACKAGE
(TOP VIEW)
These four differential line drivers are designed
for data transmission over twisted-pair or
parallel-wire transmission lines. They meet the
requirements of ANSI Standard EIA/TIA-422-B
and ITU Recommendation V.11 and are
compatible with 3-state TTL circuits. Advanced
low-power Schottky technology provides high
speed without the usual power penalty. Standby
supply current is typically only 26 mA. Typical
propagation delay time is less than 10 ns, and
enable/disable times are typically less than
16 ns.
3
2
1
20 19
18
4Y
1Z
1, 2EN
NC
4
5
6
7
8
4Z
17
16
15
14
NC
3, 4EN
3Z
2Z
2Y
9 10 11 12 13
High-impedance inputs keep input currents low:
less than 1 µA for a high level and less than
100 µA for a low level. The driver circuits can be
enabled in pairs by separate active-high enable
inputs. The SN55ALS194 and SN75ALS194 are
capable of data rates in excess of 20 megabits
per second and are designed to operate with the
SN55ALS195 and SN75ALS195 quadruple line
receivers.
NC – No internal connection
The SN55ALS194 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN75ALS194 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
OUTPUTS
INPUTS
A
OUTPUT
EN
Y
H
L
Z
L
H
L
H
H
L
H
Z
X
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
†
logic symbol
logic diagram (positive logic)
4
4
EN
1, 2EN
1, 2EN
2
3
1Y
1Z
1
7
2
3
1Y
1Z
1A
1
1A
6
5
2Y
2Z
6
5
2A
2Y
2Z
7
2A
12
9
EN
3, 4EN
12
3, 4EN
10
11
3Y
3Z
3A
4A
10
11
3Y
3Z
9
14
13
3A
4Y
4Z
15
14
13
4Y
4Z
†
15
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
4A
Pin numbers shown are for the D, J, N, and W packages.
schematics of inputs and outputs
EQUIVALENT OF EACH
DATA (A) INPUT
EQUIVALENT OF EACH
ENABLE INPUT
EQUIVALENT OF EACH
OUTPUT
V
CC
V
CC
V
CC
Input
Input
Output
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
I
Output voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
O
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, T : SN55ALS194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
A
SN75ALS194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, T
Case temperature for 60 seconds, T : FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
stg
C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or W package . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J 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 conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to network ground terminal
DISSIPATION RATING TABLE
DERATING FACTOR
T
≤ 25°C
T
A
= 70°C
T = 125°C
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING POWER RATING
A
D
FK
J
950 mW
7.6 mW/°C
11.0 mW/°C
11.0 mW/°C
9.2 mW/°C
8.0 mW/°C
608 mW
880 mW
880 mW
736 mW
640 mW
N/A
1375 mW
275 mW
275 mW
N/A
1375 mW
N
1150 mW
W
1000 mW
200 mW
‡
recommended operating conditions
SN55ALS194
SN75ALS194
UNIT
MIN NOM
MAX
MIN NOM
MAX
Supply voltage, V
4.5
2
5
5.5
4.75
5
5.25
V
CC
All inputs, T = 25°C
2
2
2
A
High-level input voltage, V
A inputs, T = Full range
2
V
IH
A
EN inputs, T = Full range
2.1
A
Low-level input voltage, V
0.8
– 20
48
0.8
– 20
48
V
IL
High-level output current, I
mA
OH
T
= 25°C
A
Low-level output current, I
mA
OL
T
A
= Full range
20
48
Operating free-air temperature, T
– 55
125
0
70
°C
A
‡
Full range is T = – 55°C to 125°C for SN55ALS194 and T = 0°C to 70°C for SN75ALS194.
A
A
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (unless otherwise noted)
†
‡
TYP
PARAMETER
TEST CONDITIONS
MIN
MAX UNIT
V
V
Input clamp voltage
V
= MIN,
I = –18 mA
I
– 1.5
V
IK
CC
SN55ALS194
SN75ALS194
2.4
2.5
V
CC
I
= MIN,
= –20 mA
High-level output voltage
V
OH
OH
V
V
Low-level output voltage
Output voltage
V
= MIN,
I = MAX
OL
0.5
6
V
V
V
OL
CC
I
I
= 0
0
O
O
|V
|
|
Differential output voltage
= 0
1.5
6
OD1
O
1/2 V
OD1
|V
Differential output voltage
V
OD2
§
or 2
Change in magnitude of
∆|V
|
± 0.4
± 3
V
V
V
OD
OC
¶
differential output voltage
Common-mode output voltage
Change in magnitude of
R
= 100 Ω,
See Figure 1
L
V
OC
∆|V
|
± 0.4
¶
common-mode output voltage
V
V
V
= 6 V
100
– 100
100
O
O
O
I
I
Output current with power off
V
V
= 0
µA
µA
O
CC
= – 0.25 V
= 2.7 V
= MAX,
CC
OZ
High-impedance-state output current
Output enables at 0.8 V
V
O
= 0.5 V
– 100
I
I
I
I
I
Input current at maximum input voltage
High-level input current
V
CC
V
CC
V
CC
V
CC
V
CC
= MAX,
= MAX,
= MAX,
= MAX,
= MAX,
V = 5.5 V
100
50
µA
µA
I
I
V = 2.7 V
I
IH
IL
Low-level input current
V = 0.5 V
I
– 200
– 140
45
µA
#
Short-circuit output current
Supply current (all drivers)
V = 2 V
I
– 40
mA
mA
OS
CC
All outputs disabled
26
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡
§
¶
All typical values are at V
= 5 V, TA = 25°C.
CC
The minimum V
with a 100-Ω load is either 1/2 V
or 2 V, whichever is greater.
and V , respectively, that occur when the input is changed from a high level to
OD2
OD1
| are the changes in magnitude of V
∆ | V
OD
| and ∆ | V
OC
OD
OC
a low level.
#
Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.
switching characteristics, V
= 5 V, T = 25°C
A
CC
SN55ALS194
SN75ALS194
TEST
CONDITIONS
PARAMETER
UNIT
MIN
TYP
6
MAX
MIN
TYP
6
MAX
t
t
Propagation delay time, low- to high-level output
13
14
6
13
14
6
ns
ns
ns
PLH
C
= 15 pF,
L
Propagation delay time, high- to low-level output
Output-to-output skew
9
9
PHL
See Figure 2
3.5
3.5
C
= 15 pF,
L
t
Differential output transition time
8
14
8
14
ns
t(OD)
See Figure 3
t
t
t
t
Output enable time to high level
Output enable time to low level
Output disable time from high level
Output disable time from low level
9
12
9
12
20
15
15
9
12
9
12
20
14
15
ns
ns
ns
ns
PZH
PZL
PHZ
PLZ
C
= 15 pF,
L
See Figure 4
12
12
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
SYMBOL EQUIVALENTS
DATA SHEET PARAMETER EIA/TIA-422-B
R
L
2
V
O
V
, V
oa ob
V
OD2
| V
| V
|
|
V
o
R
OD1
OD2
L
V
OC
V (R = 100 Ω)
2
t
L
∆ | V
|
| |V | – |V | |
OD
t
t
V
OC
| V
os
|
Figure 1. Driver V
and V
OC
OD
∆ | V
|
| V – V |
os os
OC
I
|I |, |I |
sa sb
OS
|
I
O
|I | , |I
xa
xb
PARAMETER MEASUREMENT INFORMATION
3 V
0 V
Input
1.5 V
1.5 V
5 V
200 Ω
t
PHL
t
PLH
V
OH
S1
Y Output
1.5 V
1.5 V
Generator
(see Note A)
50 Ω
V
OL
C
= 15 pF
Skew
Skew
L
(see Note B)
t
t
PLH
PHL
3 V
V
OH
See Note C
Z Output
1.5 V
1.5 V
V
OL
VOLTAGE WAVEFORM
TEST CIRCUIT
NOTES: A. The input pulse is supplied by a generator having the following characteristics: t ≤ 5 ns, t ≤ 5 ns, PRR ≤ 1 MHz, duty cycle ≤ 50%,
r
f
Z
C
≈ 50 Ω.
O
L
B.
includes probe and stray capacitance.
C. All diodes are 1N916 or 1N3064.
Figure 2. Test Circuit and Voltage Waveform
3 V
Input
R
= 100 Ω
L
C
C
0 V
t
L
L
Generator
(see Note A)
Output
50 Ω
t
t(OD)
t(OD)
90%
10%
Output
C
= 15 pF
(see Note B)
L
3 V
TEST CIRCUIT
VOLTAGE WAVEFORM
NOTES: A. The input pulse is supplied by a generator having the following characteristics: t ≤ 5 ns, t ≤ 5 ns, PRR ≤ 1 MHz, duty cycle ≤ 50%,
r
f
Z
C
≈ 50 Ω.
O
L
B.
includes probe and stray capacitance.
Figure 3. Differential-Output Test Circuit and Voltage Waveform
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
Output
5 V
200 Ω
S3
S1
0 V or 3 V
1 kΩ
See Note C
C
= 15 pF
L
(see Note B)
Generator
(see Note A)
50 Ω
S2
TEST CIRCUIT
Output
Enable
Input
Output
Enable
Input
3 V
0 V
3 V
1.5 V
1.5 V
1.5 V
0 V
t
t
t
PZL
PHZ
V
OH
Output
S1 Closed
S2 Closed
Output
S1 Closed
S2 Open
0.5 V
0.5 V
V
OL
≈ 1.5 V
≈ 1.5 V
t
PZH
PLZ
V
OH
Output
S1 Open
S2 Closed
Output
S1 Closed
S2 Closed
1.5 V
1.5 V
V
OL
VOLTAGE WAVEFORMS
NOTES: A. The input pulse is supplied by a generator having the following characteristics: t ≤ 5 ns, t ≤ 5 ns, PRR ≤ 1 MHz, duty cycle ≤ 50%,
r
f
Z
C
≈ 50 Ω.
O
L
B.
includes probe and stray capacitance.
C. All diodes are 1N916 or 1N3064.
Figure 4. Driver Test Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
†
TYPICAL CHARACTERISTICS
Y OUTPUT VOLTAGE
vs
DATA INPUT VOLTAGE
Y OUTPUT VOLTAGE
vs
DATA INPUT VOLTAGE
5
5
V
= 5 V
CC
No Load
Outputs Enabled
Outputs Enabled
No Load
4.5
4.5
T
= 25°C
A
4
4
V
CC
V
CC
V
CC
= 5.5 V
= 5 V
T
= 125°C
= 70°C
A
3.5
3.5
3
3
= 4.5 V
T
= 25°C
= 0°C
A
2.5
2.5
T
A
T
A
2
2
T
A
= –55°C
1.5
1.5
1
1
0.5
0
0.5
0
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
V – Data Input Voltage – V
I
V – Data Input Voltage – V
I
Figure 5
Figure 6
Y OUTPUT VOLTAGE
vs
Y OUTPUT VOLTAGE
vs
ENABLE G INPUT VOLTAGE
ENABLE G INPUT VOLTAGE
4
5
V
= 5 V
CC
V = 2 V
V
CC
V
CC
V
CC
= 5.5 V
= 5 V
4.5
4
I
R
3.5
3
= 470 Ω to GND
L
See Note A
T
= 125°C
A
3.5
= 4.5 V
2.5
2
3
T
= 25°C
= 0°C
A
2.5
T
T
A
= 70°C
A
2
1.5
1
T
= –55°C
A
1.5
1
V = 2 V
I
R
= 470 Ω to GND
L
0.5
0
0.5
0
See Note A
T
A
= 25°C
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
V – Enable G Input Voltage – V
I
V – Enable G Input Voltage – V
I
Figure 7
Figure 8
†
Data for temperatures below 0°C and above 70°C are applicable to the SN55ALS194 circuits only.
NOTE A: The A input is connected to V
during the testing of the Y outputs and to GND during the testing of the Z outputs.
CC
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
†
TYPICAL CHARACTERISTICS
Z OUTPUT VOLTAGE
vs
ENABLE G INPUT VOLTAGE
Z OUTPUT VOLTAGE
vs
ENABLE G INPUT VOLTAGE
6
5
4
3
2
1
0
6
5
4
3
2
1
0
R
= 470 Ω to V
= 25°C
V
CC
V
CC
V
CC
= 5.5 V
= 5 V
L
CC
V
R
= 5 V
= 470 Ω to V
CC
L
T
A
CC
See Note A
See Note B
= 4.5 V
T
= 125°C
= 70°C
= 25°C
= 0°C
A
T
A
T
A
T
A
T
A
= –55°C
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
V – Enable G Input Voltage – V
I
V – Enable G Input Voltage – V
I
Figure 9
Figure 10
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
HIGH-LEVEL OUTPUT CURRENT
5
4.5
4
5
V
I
= 5 V
= – 20 mA
CC
OH
T
= 25°C
A
See Note A
4.5
4
See Note A
3.5
3.5
V
CC
V
CC
V
CC
= 5.5 V
= 5 V
3
2.5
2
3
2.5
= 4.5 V
2
1.5
1.5
1
0.5
0
1
0.5
0
– 75 – 50 – 25
0
25
50
75
100 125
0
– 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 – 100
T
A
– Free-Air Temperature – °C
I
– High-Level Output Current – mA
OH
Figure 11
Figure 12
†
Data for temperatures below 0°C and above 70°C are applicable to the SN55ALS194 circuits only.
NOTES: A. The A input is connected to V during the testing of the Y outputs and to GND during the testing of the Z outputs.
CC
B. The A input is connected to ground during the testing of the Y outputs and to V
during the testing of the Z outputs.
CC
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
†
TYPICAL CHARACTERISTICS
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
FREE-AIR TEMPERATURE
0.5
0.45
0.4
1
V
I
= 5 V
= – 20 mA
T
= 25°C
CC
OL
A
See Note A
0.9
See Note A
V
= 4.5 V
CC
0.8
0.7
0.35
0.3
V
CC
= 5 V
0.6
0.5
0.25
0.2
0.4
0.3
V
CC
= 5.5 V
0.15
0.1
0.2
0.1
0
0.05
0
– 75 – 50 – 25
0
25
50
75
100 125
0
10 20 30 40 50 60 70 80 90 100
I
– Low-Level Output Current – mA
T
A
– Free-Air Temperature – °C
OL
Figure 13
Figure 14
NOTE A: The A input is connected to GND during the testing of the Y outputs and to V
during the testing of the Z outputs.
CC
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
80
70
60
50
40
35
30
25
Outputs Enabled
No Load
A Inputs Open or Grounded
Outputs Disabled
No Load
T
= 25°C
A
T
= 25°C
A
Inputs Grounded
40
30
20
15
Inputs Open
20
10
10
5
0
0
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
V
CC
– Supply Voltage – V
V
CC
– Supply Voltage – V
Figure 15
Figure 16
†
Data for temperatures below 0°C and above 70°C are applicable to the SN55ALS194 circuits only.
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MAY 1995
TYPICAL CHARACTERISTICS
SUPPLY CURRENT
vs
FREQUENCY
60
50
40
30
V
= 5 V
CC
Input = 0 to 3 V
Duty Cycle = 50%
C
= 30 pF to All Outputs
L
20
10
0
10 k
100 k
1 M
10 M
100 M
f – Frequency – Hz
Figure 17
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
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party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
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