Features
- Ten LVCMOS clock outputs: four system clocks, four DDR clocks, one RTC output, and one 25MHz reference clock
- Selectable input reference: crystal oscillator interface or differential LVPECL input
- Output frequency range: 25MHz to 200MHz
- Serial interface: I2C programmable
- Frequency margining in < 0.312MHz steps
- Spread spectrum for EMI reduction
- VCO range: 2GHz to 2.4GHz
- Voltage supply modes:
Core (VDD, VDDXTAL, VDDA) all core voltages must be identical
Output (VDDO_A,VDDO_B, VDDO_C, VDDO_REF0, VDDO_REF1)
Core/Output
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
2.5V/2.5V
2.5V/1.8V - Output voltage levels are independently selectable
- -40 °C to 85 °C ambient operating temperature
- Lead-free (RoHS 6) packaging
840NT4 - Block Diagram
Description
The 840NT4 is a PLL-based clock generator designed to interface with Freescale B4/T4 Processor systems. The clock generator offers low jitter, low-skew clock outputs, frequency margining (0.025MHz to 0.312MHz step granularity), and spread spectrum clocking that meets the ever-growing demands of Freescale’s next-generation processors.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Input Freq (MHz) | Output Freq Range (MHz) | Output Type | Qty. per Reel (#) | Qty. per Carrier (#) | Xtal Freq (MHz) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 840NT4-01NLGI8 | Obsolete | N/A | Out of Stock | VFQFPN | 48# | Reel | 3 | 10 - 150 | 25 - 25, 24 - 24, 125 - 125 | LVCMOS | 2000# | 0 | 25 - 25 | Yes | e3 Sn | -40 to 85°C |
| 840NT4NLGI | Obsolete | N/A | Out of Stock | VFQFPN | 48# | Tray | 3 | 150 | 66.67 - 66.67, 100 - 100, 125 - 125, 133.33 - 133.33 | LVCMOS, LVTTL | 0 | 260# | 10 - 25 | Yes | e3 Sn | -40 to 85°C |
| 840NT4NLGI8 | Obsolete | N/A | Out of Stock | VFQFPN | 48# | Reel | 3 | 150 | 66.67 - 66.67, 100 - 100, 125 - 125, 133.33 - 133.33 | LVCMOS, LVTTL | 2000# | 0 | 10 - 25 | Yes | e3 Sn | -40 to 85°C |
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- Application NotePDF 187 KB R31AN0065EU0101 Rev.1.01 Nov 14, 2023
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- Application NotePDF 170 KB 7WDXRDKU4E7E-5-57318 May 13, 2014
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- Application NotePDF 187 KB R31AN0065EU0101 Rev.1.01 Nov 14, 2023
- Application NotePDF 1.99 MB 7WDXRDKU4E7E-5-57242 Mar 01, 2022
Application Notes & White Papers (22)
- End Of Life NoticePDF 938 KB Feb 28, 2022
- End Of Life NoticePDF 909 KB Jan 20, 2022
- Product Change NoticePDF 983 KB Jun 25, 2019
- Product Change NoticePDF 583 KB 7WDXRDKU4E7E-5-61343 Dec 20, 2016View More (6)
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