产品介绍

74LVX4245 Low Voltage CMos 8-Bit Dual Supply Translating Transceiver with 3-State Outputs

The 74LVX4245 is a dual supply low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. Designed for use as an interface between a 5V bus and a 3.3V bus in a mixed 5V/3.3V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation.

This IC is intended for two-way asynchronous communication between data buses and 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.

The A-port interfaces with the 5V bus, the B-port with the 3.3V bus.

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

技术特性

• HIGH SPEED:
  • tPD = 8.5 ns (MAX.) at VCCA=5.0V VCCB = 3.3V
• LOW POWER DISSIPATION:
  • ICCA = ICCB =5µA(MAX.) at TA=25 C
• LOW NOISE:
  • VOLP =0.3V (TYP.) at VCCA=5.5V VCCB=3.3V
• SYMMETRICAL OUTPUT IMPEDANCE:
  • |IOH| = IOL = 24mA (MIN)
• BALANCED PROPAGATION DELAYS:
  • tPLH tPHL
• OPERATING VOLTAGE RANGE:
  • VCCA(OPR) = 4.5V to 5.5V(1.2VData Retention)
  • VCCB(OPR) = 2.7V to 3.6V(1.2VData Retention)
  • PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 4245
• IMPROVED LATCH-UP IMMUNITY

74LVX4245 订购信息

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