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參數(shù)資料
| 型號(hào)： | SN74ALS280NE4 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 9-BIT PARITY GENERATORS/CHECKETS |
| 中文描述： | 9位奇偶發(fā)生器/ CHECKETS |
| 文件頁(yè)數(shù)： | 1/14頁(yè) |
| 文件大?。?/td> | 492K |
| 代理商： | SN74ALS280NE4 |
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SDAS038C DECEMBER 1982 REVISED DECEMBER 1994
Copyright
1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
Generate Either Odd or Even Parity for Nine
Data Lines
Cascadable for n-Bit Parity
Can Be Used to Upgrade Existing Systems
Using MSI Parity Circuits
Package Options Include Plastic
Small-Outline (D) Packages and Standard
Plastic (N) 300-mil DIPs
description
These universal 9-bit parity generators/checkers
utilize advanced Schottky high-performance
circuitry and feature odd (
Σ
ODD) and even (
Σ
EVEN) outputs to facilitate operation of either odd- or even-parity
applications. The word-length capability is easily expanded by cascading.
These devices can be used to upgrade the performance of most systems utilizing the SN74ALS180 and
SN74AS180 parity generators/checkers. Although the SN74ALS280 and SN74AS280 are implemented without
expander inputs, the corresponding function is provided by the availability of an input (I) at terminal 4 and the
absence of any internal connection at terminal 3. This permits the SN74ALS280 and SN74AS280 to be
substituted for the SN74ALS180 and SN74AS180 in existing designs to produce an identical function even if
the devices are mixed with existing SN74ALS180 and SN74AS180 devices.
All SN74AS280 inputs are buffered to lower the drive requirements.
The SN74ALS280 and SN74AS280 are characterized for operation from 0
°
C to 70
°
C.
FUNCTION TABLE
NO. OF INPUTS
AI
THAT ARE HIGH
0, 2, 4, 6, 8
OUTPUTS
Σ
EVEN
Σ
ODD
H
L
1, 3, 5, 7, 9
L
H
logic symbol
2k
12
E
8
A
9
B
10
C
11
D
13
F
1
G
2
H
4
I
6
5
Σ
EVEN
Σ
ODD
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
D OR N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
G
H
NC
I
Σ
EVEN
Σ
ODD
GND
V
CC
F
E
D
C
B
A
NC No internal connection
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN74AS280DRG4 | 9-BIT PARITY GENERATORS/CHECKETS |
| SN74ALS569ADW | SYNCHRONOUS 4-BIT UP/DOWN DECADE AND BINARY COUNTERS WITH 3-STATE OUTPUTS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74ALS28N DC84 | 制造商:Motorola 功能描述:74AL |
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| SN74ALS29821DW | 功能描述:觸發(fā)器 10-bit Bus Interface F-F W/3-State Otpt RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類(lèi)型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類(lèi)型:CMOS 輸出類(lèi)型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
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