FAQS about Fanout/Signal Splitting
Q1: Can I use a Tee for splitting a TTL signal, an ECL signal, an analog signal?
A1: For low frequency TTL devices, such as the LS series, the TEE may be OK if short cables, no longer than 3ft, are used. It is definitely NO for any ECL devices. A Tee is not recommended for analog signals at frequencies above 10 MHz.
Q2: Can I use a power divider for splitting a TTL signal, an ECL signal, an analog signal?
A2: A passive power divider generally splits a signal into two equal parts, or 6 dB. When a digital signal is split in half, it is no longer logic level compatible, and, therefore, a 6 dB power divider should not be used. It is OK, however, for most analog signals, because one can always use amplifiers to recover the loss.
We also offer a variety of active distribution amplifiers for RF signals.
Q3: What is a Fanout device?
A3: A Fanout device is an active device that makes multiple copies of the input signals. A 1:4 Fanout Buffer, for example, produces four equal output signals from a given input signal.
Q4: What kinds of Fanout devices do you make?
A4: PRL has a wide variety of fanout buffers in configurations of 1:2, 2 x 1:2, 1:4, 1:8, 2 x 1:8, 1:10, 2 x 1:10, 3 x 1:10, and 1:22, in many logic families including TTL/CMOS, LVDS, RS-4222, NECL and LVPECL. These devices are all transmission line drivers.