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參數(shù)資料
| 型號(hào)： | 74HCT283 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-Bit Parallel-Out Serial Shift Registers 14-SOIC -40 to 85 |
| 中文描述： | 4位二進(jìn)制全加器快速進(jìn)行 |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 61K |
| 代理商： | 74HCT283 |
December 1990
8
Philips Semiconductors
Product specification
4-bit binary full adder with fast carry
74HC/HCT283
AC WAVEFORMS
Fig.6
Waveforms showing the inputs (C
IN
, A
n
, B
n
)
to the outputs (
∑
n
, C
OUT
) propagation delays
and the output transition times.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
APPLICATION INFORMATION
Fig.7 3-bit adder.
Fig.8 2-bit and 1-bit adder.
Fig.9 5-input encoder.
Fig.10 5-input majority gate.
Notes to Figs
7
to
10
Figure 7 shows a 3-bit adder using the “283”. Tying the
operand inputs of the fourth adder (A
3
, B
3
) LOW makes
∑
3
dependent on, and equal to, the carry from the third adder.
Based on the same principle, Figure 8 shows a method of
dividing the “283” into a 2-bit and 1-bit adder. The third
stage adder (A
2
, B
2
,
∑
2
) is used simply as means of
transferring the carry into the fourth stage (via A
2
and B
2
)
and transferring the carry from the second stage on
∑
2
.
Note that as long as long as A
2
and B
2
are the same, HIGH
or LOW, they do not influence
∑
2
. Similarly, when A
2
and
B
2
are the same, the carry into the third stage does not
influence the carry out of the third stage. Figure 9 shows a
method of implementing a 5-input encoder, where the
inputs are equally weighted. The outputs
∑
0
,
∑
1
and
∑
2
produce a binary number equal to the number inputs (I
1
to
I
5
) that are HIGH. Figure 10 shows a method of
implementing a 5-input majority gate. When three or more
inputs (I
1
to I
5
) are HIGH, the output M
5
is HIGH.
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
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PDF描述 |
|---|---|
| 74HC283 | 4-bit binary full adder with fast carry |
| 74HCT299 | 8-Bit Parallel-Out Serial Shift Registers 14-PDIP -40 to 85 |
| 74HC299 | 8-bit universal shift register; 3-state |
| 74HCT2G17 | Dual non-inverting Schmitt trigger |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HCT283D,652 | 制造商:NXP Semiconductors 功能描述: |
| 74HCT299D | 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT REG 3-S RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74HCT299D,652 | 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74HCT299D,653 | 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74HCT299DB | 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT REG 3-S RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
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