The TC74VHC245FT(EL) is an advanced high-speed CMOS octal bus transceiver fabricated with silicon gate CMOS technology. It achieves high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. This device is designed for asynchronous two-way communication between data buses. The direction of data transmission is determined by the level of the DIR input.

Applications:

• Data bus transceiver
• Asynchronous two-way communication
• High-speed memory systems
• Microprocessor systems
• Peripheral interface

Features:

• High-speed: tpd = 4.3 ns (typ.) at VCC = 5 V
• Low power dissipation: ICC = 4 μA (max) at Ta = 25 °C
• High noise immunity: VNIH = VNIL = 28 % VCC (min)
• Output drive capability: 15 LSTTL loads
• Symmetrical output impedance: |IOH| = IOL = 6 mA (min)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC = 2 V to 5.5 V
• Pin and function compatible with 74LS245
• Direction control pin for bidirectional data transfer

Benefits:

• Improved system performance due to high-speed operation.
• Reduced power consumption leading to energy efficiency and extended battery life in portable devices.
• Enhanced noise immunity ensures reliable operation in noisy environments.
• Increased fan-out capability allows driving a large number of devices.
• Simplified design and reduced component count due to pin compatibility with older logic families.
• Flexible bidirectional data transfer control.

Additional Details:

The TC74VHC245FT(EL) is supplied in a TSSOP package. It operates over a wide temperature range, making it suitable for various environments. The input and output pins are designed to prevent latch-up, further ensuring reliable performance. The direction control (DIR) input determines whether data flows from A to B or from B to A.