IDT ClockBlocks™ 551MILF, Fanout Buffer (Distribution), 1:4 CMOS, 160 MHz max, 3V–5.5V supply, -40°C to 85°C, 8-SOIC.
| Parameter | Value |
|---|---|
| Type | Fanout Buffer (Distribution) |
| Series | ClockBlocks™ |
| Mounting type | Surface Mount |
| Voltage | 3V ~ 5.5V |
| Frequency | 160 MHz |
| Operating temperature | -40°C ~ 85°C |
| Input | CMOS |
| Output | CMOS |
| Package | Tube |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Number of circuits | 1 |
| Ratio - Input:Output | 1:4 |
| Differential - Input:Output | No/No |
The part is single-ended only (no differential I/O), so it is the right choice for CMOS clock distribution but not for LVDS or LVPECL trees. The -40°C to 85°C industrial temperature range suits it for factory automation, outdoor telecom, and motor-drive control boards where the ambient inside the enclosure can climb.
The 551MILF carries an Active lifecycle status with ROHS3 compliance.
No — the 551MILF is listed as Active with no end-of-life or NRND status. It is suitable for ongoing production and new designs.
No. The 551MILF is single-ended only — both input and output are CMOS. For differential clock distribution (LVDS, LVPECL), look at parts like the 8SLVP1104ANLGI.
160 MHz is the maximum rated frequency. For a 200 MHz clock tree, consider the 5PB1104CMGK/W as a pin-compatible alternative.
The suffix 'LF' indicates ROHS3 compliance (lead-free). The 551M variant (non-LF) is the older tin-lead version. The 551MILF is the current active, ROHS3-compliant ordering code.