256 x 256 TSI, 8 I/O at 2Mbps, Variable Delay, 5.0V

The IDT728980 is a ST-BUS compatible digital switch controlled by a microprocessor. The IDT728980 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 (64 Kbit/s per channel) to form a multiplexed 2.048 Mb/s stream.

• 256 x 256 channel non-blocking switch
• Serial Telecom Bus Compatible (ST-BUS®)
• 8 RX inputs—32 channels at 64 Kbit/s per serial line
• 8 TX output—32 channels at 64 Kbit/s per serial line
• Three-state serial outputs
• Microprocessor Interface (8-bit data bus)
• 5V Power Supply
• Available in 44-pin Plastic Leaded Chip Carrier (PLCC)
• Operating Temperature Range -40°C to +85°C