82C89 Datasheet (Renesas) - CMOS Bus Arbiter

82C89, CMOS Bus Arbiter

PIN SYMBOL NUMBER TYPE DESCRIPTION VCC GND 20 10 VCC: The +5V Power supply pin.

A 0.1F capacitor between pins 10 and 20 is recommended for decoupling.

GROUND.

S0, S1, S2 1, 18-19 I STATUS INPUT PINS: The status input pins from an 80C86, 80C88 or 8089 processor.

The 82C89 decodes these pins t

82C89 CMOS Bus Arbiter The Intersil 82C89 Bus Arbiter is manufactured using a selfaligned silicon gate CMOS process (Scaled SAJI IV).

This circuit, along with the 82C88 bus controller, provides full bus arbitration and control for multi-processor systems.

The 82C89 is typically used in medium to large 80C86 or 80C88 systems where access to the bus by several processors must be coordinated.

The 82C89 also provides high output current and capacitive drive to eliminate the need for additional bus