特長
- Packaged in 20-pin TSSOP
- RoHS 5 (green) or RoHS 6 (green and lead free) complaint package
- Supports PCI-Express applications
- Four differential spread spectrum clock outputs
- Spread spectrum for EMI reduction
- Uses external 25 MHz clock or crystal input
- Power down pin turns off chip
- OE control tri-states outputs
- Spread and frequency selection via external pins
- Spread Bypass option available
- Industrial temperature range available
- For PCIe Gen2 applications, see the 5V41066
- For PCIe Gen3 applications, see the 5V41236
説明
The 557-05A is a spread-spectrum clock generator that supports PCI-Express requirements. It is used in PC or embedded systems to substantially reduce electro-magnetic interference (EMI). The device provides four differential HCSL or LVDS high-frequency outputs with spread spectrum capability. The output frequency and spread type are selectable using external pins.
パラメータ
| 属性 | 値 |
|---|---|
| Diff. Outputs | 4 |
| Diff. Output Signaling | HCSL |
| Output Freq Range (MHz) | 100 - 100, 200 - 200 |
| Power Consumption Typ (mW) | 396 |
| Supply Voltage (V) | 3.3 - 3.3 |
| Output Type | HCSL |
| Xtal Freq (MHz) | 25 - 25 |
| Diff. Termination Resistors | 16 |
| Package Area (mm²) | 28.6 |
| Battery Backup | No |
| Battery Seal | No |
| CPU Supervisory Function POR | No |
| Crystal Frequency Trimming | No |
| Frequency Out Pin | No |
| Inputs (#) | 1 |
| Input Freq (MHz) | 25 - 25 |
| Input Type | Crystal, LVCMOS |
| Output Banks (#) | 1 |
| Core Voltage (V) | 3.3 |
| Output Voltage (V) | 3.3 |
パッケージオプション
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TSSOP | 6.5 x 4.4 x 1.0 | 20 | 0.65 |