Intel 8284

The commercial variant of the chip comes in 18-pin DIL and 20-pin PLCC packages, and originally was priced at $4.90 USD.

[1][2][3] The industrial version, rated for the temperatures range of -40 °C to +85 °C was priced at $13.50 USD.

[4] The available 82C84A CMOS version was outsourced to Oki Electronic Industry Co., Ltd.[5] The available packaged Intel 82C84A version of 20-pin PLCC in sampling at first quarter of 1986.

The main clock output consists of a 4.5V (Vcc @ 5V) pulse wave at a 33.3% duty cycle, with an additional peripheral clock running at half of the main clock and a 50% duty cycle.

Additional logic is provided to accommodate delays to allow for proper system start-up.

The Intel 8284A situated on a motherboard next to a crystal oscillator.
Pinout 8284