Fanout Buffer includes 2:1 MUX input.
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Press Release Summary:
Model SY89830U fully differential PECL/LVPECL 1:4 fanout buffer operates down to +2.3 V. Model SY100EP15V, rated at 3.3V/5V, offers one input as single-ended while other input to MUX is differential. It also includes VBB reference voltage for single-ended inputs or AC-coupled applications. Each fanout buffer includes synchronous enable function that forces all outputs into fixed logic state without possibility of short, runt pulses.Original Press Release:
Industry's Smallest 2.5GHz 1:4 PECL Clock Fanout Buffers Operate Down to 2.5V - Include 2:1 Mux Input
- Fully differential 1:4 Fanout Buffer & 2:1 Mux input in a 16-pin TSSOP pkg
- 2:1 Mux input ideal for redundant clock switchover applications
- Less than 25ps skew
SAN JOSE, Calif. -- (June 27, 2002) -Two new high-speed, PECL/LVPECL clock fanout buffers from Micrel meet ultra-low skew, jitter and redundant switchover requirements in SONET/SDH communications systems, high-end enterprise server applications, and ATE systems. Micrel Semiconductor (NASDAQ: MCRL) is an industry leader in the design and manufacture of integrated circuits for high-speed communications, analog and power management markets.
The SY89830U is a fully differential PECL/LVPECL 1:4 fanout buffer with a differential 2:1 MUX input. This device is guaranteed to operate down to +2.3V, thus making it an ideal solution for low-voltage, +2.5V PECL clock distribution systems.
Similar to the SY89830U, the 3.3V/5V SY100EP15V is also a 1:4 PECL/LVPECL fanout buffer with a 2:1 MUX input, but one of the inputs is single-ended, and the other input to the MUX is differential. In addition, the SY100EPl5V includes a VBB reference voltage for single-ended inputs or AC-coupled applications. Both fanout buffers include a synchronous enable function that force all outputs into a fixed logic state without any possibility of short, runt pulses.
In order to maintain extremely tight timing budgets over all system conditions, the SY89830U and SY100EP15V AC-parameters are guaranteed over temperature and supply voltage. Maximum frequency is greater than 2.5GHz, within-device skew is less than 25ps, propagation delay is less than 450ps, and output rise and fall time is less than 225ps. In addition, propagation delay is extremely stable over the entire industrial temperature range.
The SY89830U PECL/LVPECL 1:4 fanout buffer is in volume production. Pricing starts at $5.60 (U.S.) when purchased in a quantity of 1K. The SY100EPl5V PECL/LVPECL 1:4 fanout buffer will be released to production by the end of March 2002. Pricing starts at $5.60 (U.S.) when purchased in a quantity of 1K. Both parts are offered in a small (5mm x 4.4mm) 16-pin TSSOP package and guaranteed over the -40°C to +85°C industrial temperature range.
Micrel Semiconductor is a leading manufacturer of advanced, precision edge timing and distribution, Ethernet switch and physical layer transceiver, mixed signal, analog and power IC solutions. These products include devices for fiber-optic telecommunications and networking, cellular telephones, servers, portable computer systems, computer peripherals, process control systems, consumer electronics and power supplies.
