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PI74ALVTC16373 PDF预览

PI74ALVTC16373

更新时间: 2024-10-27 23:27:39
品牌 Logo 应用领域
其他 - ETC 锁存器
页数 文件大小 规格书
8页 268K
描述
Logic | 16-Bit Transparent D-Type Latch

PI74ALVTC16373 数据手册

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PI74ALVTC16373  
16-Bit Transparent D-Type Latch  
with 3-STATE Outputs  
Product Features  
Product Description  
• PI74ALVTC family is designed for low voltage operation,  
Pericom Semiconductor’s PI74ALVTC series of logic circuits are  
produced in the Company’s advanced 0.35 micron CMOS  
technology, achieving industry leading speed.  
VDD = 1.8V to 3.6V  
• Supports Live Insertion  
• 3.6V I/O Tolerant Inputs and Outputs  
• Bus Hold  
The PI74ALVTC16373 is particularly suitable for implementing  
buffer registers, I/O ports, bidirectional bus drivers, and working  
registers. This device can be used as two 8-bit latches or one 16-bit  
latch. When the Latch Enable (LE) input is HIGH, the Q outputs  
follow the (D) inputs. When LE is taken LOW, the Q outputs are  
latched at the levels set up at the D inputs.  
• High Drive, -32/64mA @ 3.3V  
• Uses patented noise reduction circuitry  
• Power-off high impedance inputs and outputs  
• Industrial operation at –40°C to +85°C  
• Packages available:  
A buffered Output Enable (OE) input can be used to place the eight  
outputs in either a normal logic state (high or low logic levels) or  
a high-impedance state in which the outputs neither load nor drive  
the bus lines significantly. The high-impedance state and the  
increased drive provide the capability to drive bus lines without an  
interface or pullup components. OE does not affect internal  
operations of the latch. Old data can be retained or new data can be  
entered while the ouputs are in the high-impedance state.  
–48-pin240milwideplasticTSSOP(A)  
–48-pin173milwideplasticTVSOP(K)  
–48-pin300milwideplasticSSOP(V)  
Logic Block Diagram  
To ensure the high-impedance state during power up or power  
down, OE should be tied to Vdd through a pullup resistor; the  
minimum value of the resistor is determined by the current-sinking  
capability of the driver.  
1
1OE  
48  
1LE  
The family offers both I/O Tolerant, which allows it to operate in  
mixed 1.8/3.6V systems, and “Bus Hold,” which retains the data  
input’s last state whenever the data input goes to high-impedance,  
preventing “floating” inputs and eliminating the need for pullup/  
down resistors.  
C1  
2
1Q1  
47  
1D1  
1D  
To Seven Other Channels  
24  
25  
2OE  
2LE  
C1  
1D  
13  
2Q1  
36  
2D1  
To Seven Other Channels  
PS8355A  
11/23/98  
1

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16-Bit D-Type Flip-Flop with 3-STATE Outputs