5962-9076504Q2A [TI]
四路低功耗差分线路驱动器 | FK | 20 | -55 to 125;
| 型号： | 5962-9076504Q2A |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 四路低功耗差分线路驱动器 | FK | 20 | -55 to 125 驱动 接口集成电路 线路驱动器或接收器 驱动程序和接口 |
| 文件： | 总9页 (文件大小：139K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
J OR W PACKAGE
(TOP VIEW)
Meets EIA Standard RS-485
Designed for High-Speed Multipoint
Transmission on Long Bus Lines in Noisy
Environments
V
1A
1Y
1
2
3
4
5
6
7
8
16
15
14
CC
4A
4Y
Supports Data Rates up to and Exceeding
Ten Million Transfers Per Second
1Z
13 4Z
1,2EN
2Z
Common-Mode Output Voltage Range of
–7 V to 12 V
12 3,4EN
11
10
9
3Z
3Y
3A
2Y
2A
Positive- and Negative-Current Limiting
GND
Low Power Consumption . . . 1.5 mA Max
(Output Disabled)
FK PACKAGE
(TOP VIEW)
description
The SN55LBC174 is composed of monolithic
quadruple differential line drivers with 3-state
outputs. This device is designed to meet the
requirements of the Electronics Industry
Association (EIA) Standard RS-485 and is
3
2
1
20 19
3Z
4Y
4
5
6
7
8
18
17
16
15
14
1,2EN
NC
4Z
optimized
for
balanced
multipoint
bus
NC
3,4EN
3Z
transmission at data rates up to and exceeding 10
million bits per second. Each driver features wide
positive and negative common-mode output
2Z
2Y
9
10 11 12 13
voltage
ranges,
current
limiting,
and
thermal-shutdown protection making it suitable
for party-line applications in noisy environments.
This device is designed using LinBiCMOS ,
facilitating ultra-low power consumption and
inherent robustness.
NC – No internal connection
The SN55LBC174 provides positive and negative-current limiting and thermal shutdown for protection from line
fault conditions on the transmission bus line. This device offers optimum performance when used with the
SN55LBC173quadruple line receiver. The SN55LBC174 is available in the 16-pin CDIP package (J), the 16-pin
CPAK (W), or the 20-pin LCCC package (FK).
The SN55LBC174 is characterized for operation over the military temperature range of –55°C to 125°C.
FUNCTION TABLE
(each driver)
OUTPUTS
INPUT
ENABLE
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 (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.
LinBiCMOS is a trademark of Texas Instruments Incorporated.
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
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
†
logic diagram (positive logic)
logic symbol
4
2
3
1,2EN
EN
1Y
1Z
1
1A
2
3
6
5
4
1Y
1Z
2Y
2Z
1
1,2EN
1A
6
5
2Y
2Z
7
7
2A
2A
12
10
11
3Y
3Z
9
3,4EN
EN
3A
10
11
14
13
12
3Y
3Z
4Y
4Z
9
3,4EN
3A
14
13
4Y
4Z
15
15
4A
4A
†
ThissymbolisinaccordancewithANSI/IEEEStd91-1984
and IEC Publication 617-12.
Pin numbers shown are for the J or W package.
schematic of inputs and outputs
ALL INPUTS
Y OR Z OUTPUT
V
CC
V
CC
50 µA
200 Ω
Input
Output
Driver
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
†
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage range, V
Output voltage range, V
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –10 V to 15 V
CC
O
Input voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 7 V
I
‡
Continuous power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . internally limited
Operating free-air temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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.
The maximum operating junction temperature is internally limited. Use the dissipation rating table to operate below this temperature.
NOTE 1: All voltage values are with respect to GND.
DISSIPATION RATING TABLE
≤ 25°C DERATING FACTOR
T
A
T = 125°C
A
POWER RATING
PACKAGE
POWER RATING
ABOVE T = 25°C
A
FK
J
1375 mW
11.0 mW/°C
11.0 mW/°C
8.0 mW/°C
275 mW
1375 mW
275 mW
W
1000 mW
200 mW
recommended operating conditions
MIN NOM
4.75
MAX
UNIT
Supply voltage, V
5
5.25
V
V
V
CC
High-level input voltage, V
2
IH
Low-level input voltage, V
0.8
12
IL
Voltage at any bus terminal (separately or common mode), V
Y or Z
V
O
–7
High-level output current, I
Y or Z
Y or Z
–60
60
mA
mA
°C
OH
Low-level output current, I
OL
Operating free-air temperature, T
–55
125
A
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
†
PARAMETER
Input clamp voltage
TEST CONDITIONS
MIN TYP
MAX
–1.5
5
UNIT
V
IK
I = –18 mA
V
I
R
= 54 Ω,
= 60 Ω,
See Figure 1
See Figure 2
1.1
1.1
1.8
1.7
L
L
‡
|V
|
V
V
V
Differential output voltage
OD
R
R
5
§
∆|V
|
|
±0.2
Change in magnitude of differential output voltage
Common-mode output voltage
OD
3
– 1
V
OC
= 54 Ω,
See Figure 1
L
§
∆|V
±0.2
±100
±100
–100
–100
±250
7
V
Change in magnitude of common-mode output voltage
OC
I
I
I
I
I
Output current with power off
V
V
= 0,
V = – 7 V to 12 V
O
µA
µA
µA
µA
mA
O
CC
High-impedance-state output current
High-level input current
= – 7 V to 12 V
O
OZ
IH
V = 2.4 V
I
Low-level input current
V = 0.4 V
I
IL
Short-circuit output current
V
O
= –7 V to 12 V
OS
Outputs enabled
Outputs disabled
I
Supply current (all drivers)
No load
mA
CC
1.5
†
‡
All typical values are at V
The minimum V
= 5 V and T = 25°C.
A
CC
specification does not fully comply with EIA Standard RS-485 at operating temperatures below 0°C. The lower output signal
OD
should be used to determine the maximum signal transmission distance.
∆|V | and ∆|V | are the changes in magnitude of V and V , respectively, that occur when the input is changed from a high level to a low
§
OD OC OD OC
level.
switching characteristics, V
= 5 V
CC
PARAMETER
TEST CONDITIONS
T
MIN
2
TYP
MAX
20
40
25
40
30
40
30
40
50
90
30
45
UNIT
A
25°C
–55°C to 125°C
25°C
11
t
t
t
t
t
t
Differential output delay time
R
R
R
R
R
R
= 54 Ω,
= 54 Ω,
See Figure 3
ns
d(OD)
t(OD)
PZH
PZL
L
L
L
L
L
L
2
4
15
Differential output transition time
Output enable time to high level
Output enable time to low level
Output disable time from high level
Output disable time from low level
See Figure 3
ns
ns
ns
ns
ns
–55°C to 125°C
25°C
4
= 110 Ω, See Figure 4
= 110 Ω, See Figure 5
= 110 Ω, See Figure 4
= 110 Ω, See Figure 5
–55°C to 125°C
25°C
–55°C to 125°C
25°C
PHZ
PLZ
–55°C to 125°C
25°C
–55°C to 125°C
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
PARAMETER MEASUREMENT INFORMATION
R
L
2
V
OD2
R
L
V
OC
2
Figure 1. Differential and Common-Mode Output Voltages
V
test
R1 = 375 Ω
Y
Z
A
R
= 60 Ω
L
0 V or 3 V
V
OD
R2 = 375 Ω
EN at 5 V
–7 V < V
< 12 V
test
V
test
Figure 2. Driver V
Test Circuit
OD
3 V
0 V
Input
1.5 V
1.5 V
Input
50 Ω
R
= 54 Ω
L
C
Output
= 50 pF
L
Generator
(see Note A)
t
t
d(OD)
d(OD)
(see Note B)
≈ 2.5 V
90%
10%
50%
50%
Output
t
≈ – 2.5 V
3 V
t
t(OD)
t(OD)
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle ≤ 50%, t ≤ 5 ns,
r
t ≤ 5 ns, Z = 50 Ω.
f
O
B.
C
L
includes probe and stray capacitance.
Figure 3. Driver Differential-Output Test Circuit Delay and Transition-Time Waveforms
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
PARAMETER MEASUREMENT INFORMATION
3 V
0 V
Input
S1
1.5 V
1.5 V
Output
3 V or 0 V
Input
0.5 V
R
= 110 Ω
L
t
PZH
C
= 50 pF
L
Generator
(see Note A)
V
OH
(see Note B)
50 Ω
Output
2.3 V
PHZ
V
off
≈ 0 V
t
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle ≤ 50%, t ≤ 5 ns,
r
t ≤ 5 ns, Z = 50 Ω.
f
O
B.
C
L
includes probe and stray capacitance.
Figure 4. t
and t
Test Circuit and Waveforms
PZH
PHZ
5 V
R
= 110 Ω
L
3 V
0 V
S1
Output
Input
t
1.5 V
1.5 V
0 V or 3 V
C
= 50 pF
PZL
L
(see Note B)
t
Input
PLZ
5 V
0.5 V
Generator
(see Note A)
2.3 V
Output
50 Ω
V
OL
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle ≤ 50%, t ≤ 5 ns,
r
t ≤ 5 ns, Z = 50 Ω.
f
O
B.
C
L
includes probe and stray capacitance.
Figure 5. t
and t
Test Circuit and Waveforms
PZL
PLZ
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
TYPICAL CHARACTERISTICS
LOW-LEVEL OUTPUT VOLTAGE
OUTPUT CURRENT
vs
vs
LOW-LEVEL OUTPUT CURRENT
OUTPUT VOLTAGE
5
50
40
V
T
A
= 5 V
= 25°C
CC
Output Disabled
= 25°C
4.5
4
T
A
30
3.5
3
20
10
2.5
2
0
–10
–20
–30
–40
–50
V
= 0
CC
1.5
1
V
= 5 V
CC
0.5
0
–20
0
20
40
60
80
100 120
–25 –20 –15 –10 –5
0
5
10 15 20 25
I
– Low-Level Output Current – mA
OL
V
O
– Output Voltage – V
Figure 6
Figure 7
DIFFERENTIAL OUTPUT VOLTAGE
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
vs
FREE-AIR TEMPERATURE
3
2.5
2
5
R
= 54 Ω
= 5 V
L
V
T
A
= 5 V
= 25°C
CC
V
CC
4.5
4
3.5
3
1.5
1
2.5
2
0.5
0
1.5
–60 –40 –20
0
20
40
60
80 100
20
0
–20
–40 –60
–80
–100 –120
T
A
– Free-Air Temperature – °C
I
– High-Level Output Current – mA
OH
Figure 8
Figure 9
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN55LBC174
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS082 – MARCH 1995
TYPICAL CHARACTERISTICS
PROPAGATION DELAY TIME,
DIFFERENTIAL OUTPUT
vs
DIFFERENTIAL OUTPUT VOLTAGE
vs
OUTPUT CURRENT
FREE-AIR TEMPERATURE
14
3
2.5
2
R
C
= 54 Ω
= 50 pF
= 5 V
V
T
A
= 5 V
L
L
CC
= 25°C
13
12
V
CC
11
10
9
1.5
1
8
7
6
0.5
0
5
4
0
10 20 30 40 50 60 70 80 90 100
–60 –40 –20
0
20
40
60
80 100
I
O
– Output Current – mA
T
A
– Free-Air Temperature – °C
Figure 10
Figure 11
8
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
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
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
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
相关型号：
©2020 ICPDF网 联系我们和版权申明