Features
| • | Supports SMPTE 259M, SMPTE 344M, and SMPTE 292M |
| • | Fully differential signal path |
| • | Non-Blocking |
| • | Flexible expansion to larger array sizes with very low power |
| • | Single +5/-5V or dual ±5V operation |
| • | TRI-STATE outputs |
| • | Double row latch architecture |
| • | 64-lead PQFP package |
Description The CLC018 is a fully differential 8x8 digital crosspoint switch capable of operating at data rates exceeding 1.485 Gbps per channel. Its non-blocking architecture utilizes eight independent 8:1 multiplexers to allow each output to be independently connected to any input and any input to be connected to any or all outputs. Additionally, each output can be individually disabled and set to a high-impedance state. This TRI-STATE feature allows flexible expansion to larger switch array sizes.
Low channel-to-channel crosstalk allows the CLC018 to provide superior all-hostile jitter of 50 psPP. This excellent signal fidelity along with low power consumption of 850 mW make the CLC018 ideal for digital video switching plus a variety of data communication and telecommunication applications.
The fully differential signal path provides excellent noise immunity, and the I/Os support ECL and PECL logic levels. In addition, the inputs may be driven single-ended or differentially and accept a wide range of common mode levels including the positive supply. Single +5V or -5V supplies or dual +5V supplies are supported. Dual supply mode allows the control signals to be referenced to the positive supply (+5V) while the high-speed I/O remains ECL compatible.
The double row latch architecture utilized in the CLC018 allows switch reprogramming to occur in the background during operation. Activation of the new configuration occurs with a single "configure" pulse. Data integrity and jitter performance on unchanged outputs are maintained during reconfiguration. Two reset modes are provided. Broadcast reset results in all outputs being connected to input port DI0. TRI-STATE Reset results in all outputs being disabled.
The CLC018 is fabricated on a high-performance BiCMOS process and is available in a 64-lead plastic quad flat pack (PQFP).
Key Specification
| • | High speed: >1.485 Gbps |
| • | Low jitter: <50 psPP for rates <500 Mbps <100 ps PP for rates <1.485 Gbps |
| • | Low power; 850 mW with all outputs active |
| • | Fast output edge speeds: 250 ps |
Applications
| • | Routing switchers |
| • | Production switchers |
| • | Master control switchers |
| • | Telecom/datacom switchers |
| • | Storage Area Network (SAM) |
| • | Packet switching |
| • | ATM SONET |
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