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參數(shù)資料
| 型號(hào)： | UC5170CQTR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Very low drop voltage regulators with inhibit |
| 中文描述： | 線路驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 3/5頁(yè) |
| 文件大小： | 265K |
| 代理商： | UC5170CQTR |
UC5170C
APPLICATION INFORMATION
Slew Rate Programming
Slew rate for the UC5170C is set up by a single external
resistor connected between the SRA pin and ground.
Slew rate adjustments can be approximated by using
the following formula:
V
μ
s
=
20
R
SRA
(
R
SRA
in k
)
The slew rate resistor can vary between 2k and 10k
which allows slew rates between 10 to 2.2V/
μ
s, respec-
tively. The relationship between slew rate and RSRA is
shown in the typical characteristics.
Waveshaping of the output lets the user control the
level of interference (near-end crosstalk) that may be
coupled to adjacent circuits in an interconnection. The
recommended output characteristics for cable length
and data rates can be found in EIA standard EIA423A
+V.10. Approximations of these standards are given by
the following equations:
Max. Data Rate = 300/t (For data rates 1k to 100k bit/s)
Max. Cable Length (feet) = 100 x t (Max. length 4000 feet)
where t is the transition time from 10% to 90% of the
output swing in microseconds. For data rates below 1k
bit/s t may be up to 300 microseconds.
Output Voltage Programming
The UC5170C has two programmable output modes,
either a low voltage mode which meets EIA423A,
EIA232E/V.28/V.10 specifications, or the high output
mode which meets the EIA232E, V.28 specifications.
The high output mode provides greater output swings,
minimum of 3V below and supply rails for driving higher,
attenuated lines. This mode is selected by connecting
the mode select pins to their respected supplies, M
S
+ to
V+ and M
S
- to V-.
The low output mode provides a controlled output swing
and is accomplished by connecting both mode select
pins to ground.
AC PARAMETER TEST CIRCUIT AND WAVEFORMS
AC CHARACTERISTICS
Driver Slew Rate
Low Output Driver t
R
& t
F
(10-90%)
EIA232E + EIA423A Mode
3
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC5170Q/80068 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| UC5171 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Octal Line Driver |
| UC5171Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Line Driver |
| UC5172 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Octal Line Driver |
| UC5172Q | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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