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PI74ALVCH16841VX PDF预览

PI74ALVCH16841VX

更新时间: 2024-10-28 08:54:39
品牌 Logo 应用领域
百利通 - PERICOM 光电二极管
页数 文件大小 规格书
5页 273K
描述
Bus Driver, ALVC/VCX/A Series, 2-Func, 10-Bit, True Output, CMOS, PDSO56, 0.300 INCH, PLASTIC, SSOP-56

PI74ALVCH16841VX 数据手册

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PI74ALVCH16841  
20-Bit Bus-Interface D-Type Latch  
with 3-STATE Outputs  
Product Features  
ProductDescription  
Pericom Semiconductor’s PI74ALVCH series of logic circuits are  
producedintheCompany’sadvanced0.5micronCMOStechnology,  
achieving industry leading speed.  
PI74ALVCH16841 is designed for low voltage operation  
V = 2.3V to 3.6V  
CC  
Hysteresis on all inputs  
ThePI74ALVCH16841,a20-bitbus-interfaceD-typelatch designed  
Typical V  
(Output Ground Bounce)  
OLP  
for2.3Vto3.6VV operation.  
CC  
< 0.8V atV = 3.3V, T = 25°C  
CC  
A
ThePI74ALVCH16841features3-stateoutputsdesignedspecifically  
for driving highly capacitive or relatively low-impedance loads.  
It is particularly suitable for implementing buffer registers,  
unidirectional bus drivers, and working registers.  
Typical V  
(Output V Undershoot)  
OH  
OHV  
< 2.0V atV = 3.3V, T = 25°C  
CC  
A
Bus Hold retains last active bus state during 3-STATE,  
eliminating the need for external pullup resistors  
Industrial operation at –40°C to +85°C  
Packages available:  
The PI74ALVCH16841 can be used as two 10-bit latches or one  
20-bit latch (transparent D-type). The device has non-inverting  
Data (D) inputs and provides true data at its outputs. While the  
Latch Enable (1LE or 2LE) input is HIGH, the Q outputs of the  
corresponding 10-bit latch follow the D inputs. When LE is taken  
LOW, the Q outputs are latched at the levels set up at the D inputs.  
– 56-pin 240 mil wide plastic TSSOP (A)  
– 56-pin 300 mil wide plastic SSOP (V)  
A buffered Output Enable (1OE or 2OE) input can be used to place  
theoutputsofthecorresponding10-bitlatchineitheranormallogic  
state (high or low logic levels) or a high-impedance state. In that  
state, outputs neither load nor drive the bus lines significantly.  
LogicBlockDiagram  
TheOutputEnable(OE)inputdoesnotaffecttheinternaloperation  
of the latches. Old data can be retained or new data can be entered  
while the outputs are in the high-impedance state.  
1
1OE  
56  
1LE  
To ensure the high-impedance state during power up or power  
C1  
2
down, OE should be tied to V through a pullup resistor; the  
CC  
1Q1  
55  
minimumvalue of the resistor is determined by the current-sinking  
capability of the driver.  
1D1  
1D  
Active bus-hold circuitry is provided to hold unused or floating  
data inputs at a valid logic level.  
TO NINE OTHER CHANNELS  
28  
29  
2OE  
2LE  
C1  
1D  
15  
2Q1  
42  
2D1  
TO NINE OTHER CHANNELS  
PS8182A  
11/06/00  
1

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