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參數資料
| 型號： | DM74AS286 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 9-Bit Parity Generator/Checker with Bus-Driver Parity I/O Port |
| 中文描述： | 9位奇偶發生器/檢查與巴士司機平價I / O端口 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 64K |
| 代理商： | DM74AS286 |
2000 Fairchild Semiconductor Corporation
DS006305
www.fairchildsemi.com
October 1986
Revised April 2000
D
DM74AS286
9-Bit Parity Generator/Checker
with Bus-Driver Parity I/O Port
General Description
These universal, 9-bit parity generators/checkers utilize
advanced Schottky high performance circuitry and feature
odd/even outputs to facilitate operation of either odd or
even parity applications. The word length capability is eas-
ily expanded by cascading.
The DM74AS286 can be used to upgrade the performance
of most systems utilizing the DM74AS280 parity generator/
checker. Although the DM74AS286 is implemented without
expander inputs, the corresponding function is provided by
the availability of an input pin XMIT. XMIT is a control line
which makes parity error output active and parity an input
port when HIGH; when LOW, parity error output is inactive
and parity becomes an output port. In addition, parity I/O
control circuitry contains a feature to keep the I/O port in
the 3-STATE during power UP or DOWN to prevent bus
glitches.
Features
I
PNP inputs to reduce bus loading
I
Generates either odd or even parity for nine data lines
I
Inputs are buffered to lower the drive requirements
I
Can be used to upgrade existing systems using MSI
parity circuits
I
Cascadable for n-bits
I
Switching specifications at 50 pF
I
Switching specifications guaranteed over full
temperature and V
CC
range
I
A parity I/O portable to drive bus
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
L
=
LOW Logic Level
H
=
HIGH Logic Level
N/A
=
Not Applicable
Order Number
DM74AS286M
DM74AS286N
Package Number
M14A
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Number of Inputs
(A thru I)
that are HIGH
0, 2, 4, 6, 8
1, 3, 5, 7, 9
0, 2, 4, 6, 8
0, 2, 4, 6, 8
1, 3, 5, 7, 9
1, 3, 5, 7, 9
Parity I/O
XMIT
Parity
Error
Mode
of
Operation
Parity
Generator
Parity
Checker
Parity
Checker
Input Output
N/A
N/A
H
L
H
L
H
L
L
L
H
H
H
H
H
H
H
L
L
H
N/A
N/A
N/A
N/A
相關PDF資料 |
PDF描述 |
|---|---|
| DM74AS286M | 9-Bit Parity Generator/Checker with Bus-Driver Parity I/O Port |
| DM74AS286N | 10-Bit Bus Transceiver With 3-State Outputs 24-TSSOP -40 to 85 |
| DM74AS286MX | Parity Generator/Checker |
| DM74AS30 | 10-Bit Bus Transceiver With 3-State Outputs 24-TSSOP -40 to 85 |
| DM74AS30M | 8 Input NAND Gate |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DM74AS286M | 功能描述:奇偶功能 9-Bit Par Gen/Check RoHS:否 制造商:Texas Instruments 電路數量:1 位數:9 邏輯系列:74AC 封裝 / 箱體:SOIC-14 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:263 ns 工作電源電壓:1.8 V, 2.5 V, 3.3 V, 5 V 最大工作溫度:+ 70 C 最小工作溫度:- 55 C 封裝:Reel |
| DM74AS286MX | 功能描述:奇偶功能 9-Bit Par Gen/Check RoHS:否 制造商:Texas Instruments 電路數量:1 位數:9 邏輯系列:74AC 封裝 / 箱體:SOIC-14 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:263 ns 工作電源電壓:1.8 V, 2.5 V, 3.3 V, 5 V 最大工作溫度:+ 70 C 最小工作溫度:- 55 C 封裝:Reel |
| DM74AS286N | 功能描述:奇偶功能 DISC BY MOUSER 10/01 RoHS:否 制造商:Texas Instruments 電路數量:1 位數:9 邏輯系列:74AC 封裝 / 箱體:SOIC-14 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:263 ns 工作電源電壓:1.8 V, 2.5 V, 3.3 V, 5 V 最大工作溫度:+ 70 C 最小工作溫度:- 55 C 封裝:Reel |
| DM74AS30M | 功能描述:邏輯門 8-Input NAND Gate RoHS:否 制造商:Texas Instruments 產品:OR 邏輯系列:LVC 柵極數量:2 線路數量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
| DM74AS30M_Q | 功能描述:邏輯門 8-Input NAND Gate RoHS:否 制造商:Texas Instruments 產品:OR 邏輯系列:LVC 柵極數量:2 線路數量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
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