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PI74LPT16501CA PDF预览

PI74LPT16501CA

更新时间: 2024-11-24 23:27:51
品牌 Logo 应用领域
其他 - ETC 总线收发器触发器逻辑集成电路光电二极管输出元件
页数 文件大小 规格书
5页 248K
描述
18-Bit Bus Transceiver

PI74LPT16501CA 数据手册

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PI74LPT16501  
1
2
Fast CMOS 18-Bit Registered Transceivers  
Product Features  
Product Description  
• CompatiblewithLCX™andLVT™familiesofproducts  
Pericom Semiconductor’s PI74LPT series of logic circuits are  
produced using the Company’s advanced 0.6 micron CMOS  
technology, achieving industry leading speed grades.  
• Supports 5V Tolerant Mixed Signal Mode Operation  
– Input can be 3V or 5V  
3
– Output can be 3V or connected to 5V bus  
ThePI74LPT16501isan18-bitregisteredbustransceiverdesigned  
with D-type latches and flip-flops to allow data flow in transparent,  
latched, and clocked modes. The Output Enable (OEAB and  
OEBA, Latch Enable (LEAB and LEBA) and Clock (CLKAB and  
CLKBA) inputs control the data flow in each direction. When  
LEAB is HIGH, the device operates in transparent mode for A-to-  
B data flow. When LEAB is LOW, the A data is latched if CLKAB  
is held at a HIGH or LOW logic level. The A bus data is stored in  
the latch/flip-flop on the LOW-to-HIGH transition of CLKAB, if  
LEAB is LOW. OEAB performs the output enable function on the  
B port. Data flow from B port to A port is similar using OEBA,  
LEBA and CLKBA. This high-speed, low power device offers a  
flow-through organization for ease of board layout.  
• Advanced Low Power CMOS Operation  
• Excellent output drive capability:  
4
5
Balanced drives (24 mA sink and source)  
• Pin compatible with industry standard double-density  
pinouts  
• Low ground bounce outputs  
• Hysteresis on all inputs  
• Industrial operating temperature range: –40°C to +85°C  
• Multiple center pins and distributed Vcc/GND pins  
minimize switching noise  
6
• Packages available:  
ThePI74LPT16501canbedrivenfromeither3.3Vor5.0Vdevices  
allowing this device to be used as a translator in a mixed  
3.3V/5.0V system.  
–56-pin240milwideplasticTSSOP(A)  
–56-pin300milwideplasticSSOP(V)  
7
8
Logic Block Diagram  
OEAB  
9
CLKBA  
LEBA  
10  
11  
12  
13  
14  
15  
OEBA  
CLKAB  
LEAB  
C
C
B1  
A
1
D
D
C
D
C
D
TO 17 OTHER CHANNELS  
PS2071A 01/16/97  
1

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