100 MHz fanout buffer with 1:10 distribution
The Renesas 74FCT3807APYG is a single-circuit fanout buffer that takes one LVTTL input and distributes it to ten CMOS or TTL outputs, running at a maximum frequency of 100 MHz. It operates from a 3V to 3.6V supply and comes in a 20-SSOP surface-mount package. This is a commercial-temperature-grade part (0°C to 70°C), suited for indoor equipment like servers, telecom line cards, and test instrumentation where a clean, non-differential clock fanout is needed.
1:10 fanout — BOM density per clock tree
The 1:10 input-to-output ratio is the key density spec. One 74FCT3807APYG replaces two 1:4 or 1:5 buffers, saving board area and reducing the number of clock-tree stages. The non-differential topology (No/No for differential input/output) means it is a straight single-ended buffer — no PECL or CML translation needed, which simplifies the layout for 3.3V CMOS clock distribution.
3.3V supply rail — what it means for the power design
The supply range is 3V to 3.6V, which is essentially a 3.3V ±10% rail. This buffer will not run from a 2.5V or 5V supply without a regulator. On a mixed-voltage board, allocate a dedicated 3.3V rail or a local LDO for this device to keep the clock buffer supply clean — switching noise on the supply rail couples into the output jitter.
Commercial temperature grade — deployment boundary
Rated for 0°C to 70°C, this part is limited to indoor, temperature-controlled environments.
Active lifecycle — no end-of-life pressure
ROHS3 compliance is confirmed.