- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄360460 > 74HCT280 (NXP Semiconductors N.V.) 9-bit odd/even parity generator/checker(9位奇/偶發(fā)生器/檢測器) PDF資料下載
參數(shù)資料
| 型號： | 74HCT280 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 9-bit odd/even parity generator/checker(9位奇/偶發(fā)生器/檢測器) |
| 中文描述： | 9位奇/偶校驗發(fā)生器/檢查（9位奇/偶發(fā)生器/檢測器） |
| 文件頁數(shù)： | 2/7頁 |
| 文件大小： | 49K |
| 代理商： | 74HCT280 |
December 1990
2
Philips Semiconductors
Product specification
9-bit odd/even parity generator/checker
74HC/HCT280
FEATURES
Word-length easily expanded by cascading
Similar pin configuration to the “180” for easy system
up-grading
Generates either odd or even parity for nine data bits
Output capability: standard
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT280 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT280 are 9-bit parity generators or checkers
commonly used to detect errors in high-speed data
transmission or data retrieval systems. Both even and odd
parity outputs are available for generating or checking
even or odd parity up to 9 bits.
The even parity output (
∑
E
) is HIGH when an even number
of data inputs (I
0
to I
8
) are HIGH. The odd parity output (
∑
0
)
is HIGH when an odd number of data inputs are HIGH.
Expansion to larger word sizes is accomplished by tying
the even outputs (
∑
E
) of up to nine parallel devices to the
data inputs of the final stage. For a single-chip 16-bit
even/odd parity generator/checker, see
PC74HC/HCT7080.
APPLICATIONS
25-line parity generator/checker
81-line parity generator/checker
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
= 6 ns
Notes
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W):
P
D
= C
PD
×
V
CC2
×
f
i
+ ∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
1.5 V
2.
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”
.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
t
PHL
/ t
PLH
propagation delay
I
n
to
∑
E
I
n
to
∑
O
input capacitance
power dissipationcapacitance per package
C
L
= 15 pF; V
CC
= 5 V
17
20
3.5
65
18
22
3.5
65
ns
ns
pF
pF
C
I
C
PD
notes 1 and 2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HC297 | Digital phase-locked-loop filter |
| 74HCT297 | Digital phase-locked-loop filter |
| 74HC32 | PROTECT HEADER RT ANG 20 CONTACT |
| 74HCT32 | HEADER, 10 POS,0.100 C, DUAL, RT ANG |
| 74HCT32 | 8-Bit Parallel-Out Serial Shift Registers 14-TSSOP -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HCT280D | 功能描述:奇偶功能 9-BIT PARITY GEN/CHK RoHS:否 制造商:Texas Instruments 電路數(shù)量:1 位數(shù):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 |
| 74HCT280D,652 | 功能描述:奇偶功能 9-BIT PARITY GEN/CHK RoHS:否 制造商:Texas Instruments 電路數(shù)量:1 位數(shù):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 |
| 74HCT280D,653 | 功能描述:奇偶功能 9-BIT ODD/EVEN PAR GEN/CHECKER RoHS:否 制造商:Texas Instruments 電路數(shù)量:1 位數(shù):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 |
| 74HCT280DB | 功能描述:奇偶功能 9-BIT ODD/EVEN PAR GEN/CHECKER RoHS:否 制造商:Texas Instruments 電路數(shù)量:1 位數(shù):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 |
| 74HCT280DB,112 | 功能描述:奇偶功能 9-BIT ODD/EVEN PAR RoHS:否 制造商:Texas Instruments 電路數(shù)量:1 位數(shù):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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。