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74LCX16240 PDF预览

74LCX16240

更新时间: 2024-11-20 04:47:43
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意法半导体 - STMICROELECTRONICS /
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15页 239K
描述
Low voltage CMOS 16-bit bus buffer (3-state) with 5V tolerant inputs and outputs

74LCX16240 数据手册

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74LCX16240  
Low voltage CMOS 16-bit bus buffer (3-state)  
with 5V tolerant inputs and outputs  
Features  
5V tolerant inputs and outputs  
High speed:  
– t = 4.5ns (Max) at V = 3V  
PD  
CC  
Power down protection on inputs and outputs  
Symmetrical output impedance:  
TSSOP48  
– |I | = I = 24mA (Min) at V = 3V  
OH  
OL  
CC  
PCI bus levels guaranteed at 24mA  
Balanced propagation delays:  
Description  
– t  
t  
PHL  
PLH  
The 74LCX16240 is a low voltage CMOS 16 BIT  
BUS BUFFER fabricated with sub-micron silicon  
gate and double-layer metal wiring C MOS  
Operating voltage range:  
2
– V (Opr) = 2.0V to 3.6V  
CC  
technology. It is ideal for low power and high  
speed 3.3V applications; it can be interfaced to  
5V signal environment for both inputs and  
outputs.  
Pin and function compatible with  
74 series 16240  
Latch-up performance exceeds  
500mA (JESD 17)  
Any nG output control governs four BUS  
BUFFERS. Output Enable input (nG) tied together  
gives full 16-bit operation.  
ESD performance:  
– HBM > 2000V  
(MIL STD 883 method 3015); MM > 200V  
When nG is LOW, the outputs are on. When nG is  
HIGH, the output are in high impedance state.  
This device is designed to be used with 3 state  
memory address drivers, etc.  
It has same speed performance at 3.3V than 5V  
AC/ACT family, combined with a lower power  
consumption.  
All inputs and outputs are equipped with  
protection circuits against static discharge, giving  
them 2KV ESD immunity and transient excess  
voltage.  
Order codes  
Part number  
Package  
TSSOP48  
Packaging  
74LCX16240TTR  
Tape and reel  
February 2007  
Rev 5  
1/15  
www.st.com  
15  

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