产品介绍

74LCX157 Low voltage CMOS Quad 2 channel multiplexer with 5V tolerant inputs

The 74LCX157 is a low voltage CMOS Quad 2 channel multiplexer 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 inputs.

It consists of four 2-input digital multiplexer with common select and strobe inputs. It is a non-inverting multiplexer. When the STROBE input is held high selection of data is inhibited and all the outputs become low. The SELECT decoding determines whether the A or B inputs get routed to their corresponding Y outputs.

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.

技术特性

• 5V tolerant inputs
• High speed:
  • tPD = 6.0ns (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 157
• Latch-up performance exceeds 500mA (JESD 17)
• ESD performance:
  • HBM > 2000V
  • (MIL STD 883 method 3015); MM > 200V

74LCX157 订购信息

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