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參數(shù)資料
| 型號(hào)： | SN55121FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL LINE DRIVERS |
| 中文描述： | 雙線路驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 117K |
| 代理商： | SN55121FK |
SN55121, SN75121
DUAL LINE DRIVERS
SLLS074C – SEPTEMBER 1973 – REVISED MAY 1998
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Designed for Digital Data Transmission
Over 50-
to 500-
Coaxial Cable, Strip
Line, or Twisted Pair
High Speed
t
pd
= 20 ns Maximum at C
L
= 15 pF
TTL Compatible With Single 5-V Supply
2.4-V Output at I
OH
= –75 mA
Uncommitted Emitter-Follower Output
Structure for Party-Line Operation
Short-Circuit Protection
AND-OR Logic Configuration
Designed for Use With Triple Line
Receivers SN55122, SN75122
Designed to Be Interchangeable With
Signetics N8T13
description
The SN55121 and SN75121 dual line drivers are
designed for digital data transmission over lines
having impedances from 50 to 500
. They are
also compatible with standard TTL logic and
supply-voltage levels.
The low-impedance emitter-follower outputs of
the SN55121 and SN75121 can drive terminated
lines such as coaxial cable or twisted pair. Having
the outputs uncommitted allows wired-OR logic to
be performed in party-line applications. Output
short-circuit protection is provided by an internal
clamping network that turns on when the output
voltage drops below approximately 1.5 V. All of the
inputs are in conventional TTL configuration and
the gating can be used during power-up and
power-down sequences to ensure that no noise is
introduced to the line.
The SN55121 is characterized for operation over
the full military temperature range of –55
°
C to
125
°
C. The SN75121 is characterized for
operation from 0
°
C to 70
°
C.
Copyright
1998, 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.
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.
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
2E
2D
NC
2C
2B
1C
1D
NC
1E
1F
1
1
N
2
2
2
1
G
N
NC–No internal connection
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1A
1B
1C
1D
1E
1F
1Y
GND
V
CC
2F
2E
2D
2C
2B
2A
2Y
C
THE SN75121 IS NOT
RECOMMENDED FOR NEW DESIGNS
SN55121 . . . J PACKAGE
SN75121 . . . D OR N PACKAGE
(TOP VIEW)
SN55121 . . . FK PACKAGE
(TOP VIEW)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN55138FK | .047UF/100VDC METAL POLY CAP |
| SN55138W | QUADRUPLE BUS TRANSCEIVERS |
| SN55173FK | QUADRUPLE DIFFERENTIAL LINE RECEIVERS |
| SN55182FK | DUAL DIFFERENTIAL LINE RECEIVERS |
| SNJ55182 | DUAL DIFFERENTIAL LINE RECEIVERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN55121J | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINE DRIVERS |
| SN55122 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TRIPLE LINE RECEIVERS |
| SN55122FK | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Line Receiver |
| SN55122J | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TRIPLE LINE RECEIVERS |
| SN55138 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE BUS TRANSCEIVERS |
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