ON Semiconductor MC74HCT245ADWG Octal Bus Transceiver

The MC74HCT245ADWG from ON Semiconductor is a high-performance, octal bus transceiver designed to provide bidirectional communication between data buses. This integrated circuit is part of the HCT family, which ensures compatibility with both CMOS and TTL logic levels, making it an ideal choice for interfacing between different logic families.

The device features eight non-inverting bus transceivers with 3-state outputs, allowing for convenient connection to a data bus that can be used for both driving and receiving signals. This versatility makes the MC74HCT245ADWG suitable for a wide range of applications, including data transfer between systems, bus isolation, and buffering in high-speed computing environments.

Encased in a 20-pin SOIC package, the MC74HCT245ADWG boasts a robust design that ensures reliable operation over a broad temperature range. This transceiver operates with a supply voltage range of 4.5V to 5.5V, which aligns with standard digital logic levels, providing ease of integration into existing designs without the need for additional level-shifting components.

Key features of the MC74HCT245ADWG include:

• Octal bidirectional switching
• 3-state outputs for bus-oriented applications
• Input and output interface capability to systems at 5V supply
• Logic level translation capability to interface with 5V TTL logic
• Output drive capability of 15 LSTTL loads
• Typical propagation delay times of 11 ns
• Low input current of 1 µA (max)
• Low quiescent supply current of 4 µA (max)

The MC74HCT245ADWG is equipped with a latch-up performance that exceeds 250 mA on all inputs and outputs, providing additional protection against the latch-up phenomenon caused by high-speed switching or exposure to high-energy transients. This feature is particularly important in protecting the device in harsh electrical environments.

ON Semiconductor's commitment to quality ensures that the MC74HCT245ADWG meets stringent standards, providing designers with a reliable and high-performance solution for their data bus communication needs. Whether used in microprocessor or microcomputer-based systems, this transceiver offers a flexible and efficient way to manage data flow across buses.