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74LCX16244 Fiches technique(PDF) 1 Page - STMicroelectronics |
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1 / 15 page February 2007 Rev 6 1/15 15 74LCX16244 Low voltage CMOS 16-bit bus buffer (3-state) with 5V tolerant inputs and outputs Features ■ 5V tolerant inputs and outputs ■ High speed: –tPD = 4.5ns (Max) at VCC = 3V ■ Power down protection on inputs and outputs ■ Symmetrical output impedance: –|IOH| = IOL = 24mA (Min) at VCC = 3V ■ PCI bus levels guaranteed at 24mA ■ Balanced propagation delays: –tPLH ≅ tPHL ■ Operating voltage range: –VCC (Opr) = 2.0V to 3.6V ■ Pin and function compatible with 74 series 16244 ■ Latch-up performance exceeds 500mA (JESD 17) ■ ESD performance: – HBM > 2000V (MIL STD 883 method 3015); MM > 200V Description The 74LCX16244 is a low voltage CMOS 16 bit bus buffer (non-inverted) fabricated with sub- micron silicon gate and double-layer metal wiring C2MOS 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. Any nG output control governs four BUS BUFFERS. Output Enable input (nG) tied together gives full 16-bit operation. 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. TSSOP48 www.st.com Order codes Part number Package Packaging 74LCX16244TTR TSSOP48 Tape and reel |
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