产品介绍

74LCX245 Octal Bus Transceiver (3-State) with 5V Tolerant Input & Output

The 74LCX245 is a low voltage CMOS octal BUS transceiver (3-state) 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.

It has same speed performance at 3.3V than 5V AC/ACT family, combined with a lower power consumption.

This IC is intended for two way asynchronous communication between data buses; the direction of data transmission is determined by DIR input. The enable input G can be used to disable the device so that the buses are effectively isolated.

All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.

All floating bus terminals during High Z state must be held HIGH or LOW.

技术特性

• 5V tolerant inputs and outputs
• High speed:
  • tPD = 7.0ns (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 (1.5V Data Retention)
• Pin and function compatible with 74 series 245
• Latch-up performance exceeds 500mA (JESD 17)
• ESD performance:
  • HBM > 2000V (MIL STD 883 method 3015);
  • MM > 200V

74LCX245 订购信息

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