- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370474 > HD74AC (Hitachi,Ltd.) HD74AC Series Common Information PDF資料下載
參數(shù)資料
| 型號(hào)： | HD74AC |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | HD74AC Series Common Information |
| 中文描述： | HD74AC系列通用信息 |
| 文件頁數(shù)： | 11/52頁 |
| 文件大?。?/td> | 220K |
| 代理商： | HD74AC |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當(dāng)前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
FACT Descriptions and Family Characteristics
10
2. Circuit Characteristics
2.1 Power Dissipation
One advantage to using CMOS logic is its extremely low power consumption. During quiescent
conditions, FACT will consume several orders of magnitude less current than its bipolar counterparts. But
DC power consumption is not the whole picture. Any circuit will have AC power consumption, whether it
is built with CMOS or bipolar technologies.
Power consumption of a circuit can be calculated using the formula:
P
D
= [(C
L
+ C
PD
) V
CC
V
S
f] + [I
Q
V
CC
]
where:
P
D
= power dissipation
C
L
= load capacitance
C
PD
= device power capacitance
V
CC
= power supply
V
S
= output voltage swing
f = frequency of operation
I
Q
= quiescent current
Power consumption for FACT is dependent on the supply voltage, frequency of operation, internal
capacitance and load. V
S
will be V
CC
and I
Q
can be considered negligible for CMOS. Therefore, the
simplified formula for CMOS is:
P
D
= (C
L
+ C
PD
)V
CC
2
f
C
PD
values for CMOS devices are calculated by measuring the power consumption of a device at two
different frequencies. C
PD
is calculated in the following manner.
1. The power supply voltage is set to V
CC
= 5.0 VDC.
2. Signal inputs are set up so that as many outputs as possible are switching, giving a worst-case
situation per JEDEC C
PD
conditions.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD74ALVC162244 | 16-bit Buffer / Driver with 3-state Outputs(帶三態(tài)輸出的16位緩沖器/驅(qū)動(dòng)器) |
| HD74ALVC162334 | 16-bit Universal Bus Driver with 3-state Outputs(帶三態(tài)輸出的16位通用總線驅(qū)動(dòng)器) |
| HD74ALVC16244 | 16-bit Buffer / Driver with 3-state Outputs(帶三態(tài)輸出的16位緩沖器/驅(qū)動(dòng)器) |
| HD74ALVC162831 | 1-bit to 4-bit Address Register / Driver with 3-state Outputs(三態(tài)輸出的1位-4位地址寄存器/驅(qū)動(dòng)器) |
| HD74ALVC162834A | 1-Of-8 Data Selectors/Multiplexers 16-CDIP -55 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD74AC00 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Quad 2-Input NAND Gate |
| HD74AC00FP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Quad 2-input NAND Gate |
| HD74AC00FPEL | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Quad 2-Input NAND Gate |
| HD74AC00P | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Quad 2-Input NAND Gate |
| HD74AC00RPEL | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Quad 2-Input NAND Gate |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。