TOSHIBA TC74VHCT245AFK(E,K)

The TC74VHCT245A is an advanced high speed CMOS OCTAL BUS TRANSCEIVER fabricated with silicon gate c²MOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. It is intended for two-way asynchronous communication between data busses. The direction of data transmission is determined by the level of the DIR input. The enable input ( G ) can be used to disable the device so that the busses are effectively isolated. The input voltage are compatible with TTL output voltage. This device may be used as a level converter for interfacing 3.3 V to 5 V system. Input protection and output circuit ensure that 0 to 5.5 V can be applied to the input and output (Note) pins without regard to the supply voltage. These structure prevents device destruction due to mismatched supply and input/output voltages such as battery back up, hot board insertion, etc.

• High speed: tpd = 4.9 ns (typ.) at VCC = 5 V
• Low power dissipation: ICC = 4 μA (max) at Ta = 25℃
• Compatible with TTL inputs: VL = 0.8 V (max), VH = 2.0 V (min)
• Power down protection is provided on all inputs and outputs
• Balanced propagation delays: tpLH ≈ tpHL
• Low noise: VolP = 1.5 V (max)
• Pin and function compatible with the 74 series (74AC/HC/F/ALS/LS etc.) 245 type.