IDT72V8985

• 256 x 256 channel non-blocking switch
• Automatic signal identification (ST-BUS®, GCI)
• 8 RX inputs-32 channels at 64 Kbit/s per serial line
• 8 TX outputs-32 channels at 64 Kbit/s per serial line
• Three-state serial outputs
• Microprocessor Interface (8-bit data bus)
• Frame Integrity for data applications
• 3.3V Power Supply
• Available in 44-pin Plastic Leaded Chip Carrier (PLCC),48-pin Small Shrink Outline Package (SSOP), and 44-pin lasticQuad Flatpack (PQFP)
• Operating Temperature Range -40°C to +85°C
• 3.3V I/O with 5V Tolerant Inputs

NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only a functional operation of the device at these or any conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

The IDT72V8985 is a ST-BUS®/GCI compatible digital switch controlled by a microprocessor. The IDT72V8985 can handle as many as 256, 64 Kbit/s input and output channels. Those 256 channels are divided into 8 serial inputs and
outputs, each of which consists of 32 channels. The IDT72V8985 provides perchannel variable or constant throughput delay modes and microprocessor read and write access to individual channels. As an important function of a digital switch is to maintain sequence integrity and minimize throughput delay, the IDT72V8985 is an ideal solution for most switching needs.