The PI74ALVCH16827A is a 20-bit buffer/driver with 3-state outputs from Pericom Semiconductor (now Diodes Incorporated). This device is designed for high-performance bus interface applications, especially where high drive strength and low propagation delay are required. It's part of the ALVCH (Advanced Low Voltage CMOS with High-Speed) family, making it suitable for systems operating at lower voltages while maintaining high speed.

Applications

• Memory interface
• Address line driving
• Data buffering
• Clock distribution
• High-speed backplane driving

Features

• 20-bit buffer/driver
• 3-state outputs
• Low voltage operation (typically 3.3V, but can operate at 2.5V)
• High-speed propagation delay
• Low power consumption
• TTL-compatible inputs
• Output enable control

Benefits

• Increased system performance due to fast propagation delays
• Reduced power consumption, extending battery life in portable devices
• Flexible system design with 3-state outputs
• High drive capability for driving heavily loaded buses
• Compatibility with TTL logic levels
• Enhanced control over output state with output enable

Additional Details

The PI74ALVCH16827A operates over a voltage range of 2.3V to 3.6V. It features typical propagation delays of a few nanoseconds, which allows for high-frequency operation. The 3-state outputs enable the device to be effectively disconnected from the bus when not transmitting, preventing bus contention. The output enable control provides additional flexibility in managing the output state. The device is available in various surface-mount packages like TSSOP, facilitating easy integration into modern electronic designs. The operating temperature range is typically -40°C to +85°C.