Texas Instruments

The CDCVF2310 is a high-performance, low-skew clock buffer that operates up to 200 MHz. Two banks of five outputs each provide low-skew copies of CLK. After power up, the default state of the outputs is low regardless of the state of the control pins. For normal operation, the outputs of bank 1Y[0:4] or 2Y[0:4] can be placed in a low state when the control pins (1G or 2G, respectively) are held low and a negative clock edge is detected on the CLK input. The outputs of bank 1Y[0:4] or 2Y[0:4] can be switched into the buffer mode when the control pins (1G and 2G) are held high and a negative clock edge is detected on the CLK input. The device operates in a 2.5-V and 3.3-V environment. The built-in output enable glitch suppression ensures a synchronized output enable sequence to distribute full period clock signals. The CDCVF2310 is characterized for operation from –55°C to 125°C. The CDCVF2310 is a high-performance, low-skew clock buffer that operates up to 200 MHz. Two banks of five outputs each provide low-skew copies of CLK. After power up, the default state of the outputs is low regardless of the state of the control pins. For normal operation, the outputs of bank 1Y[0:4] or 2Y[0:4] can be placed in a low state when the control pins (1G or 2G, respectively) are held low and a negative clock edge is detected on the CLK input. The outputs of bank 1Y[0:4] or 2Y[0:4] can be switched into the buffer mode when the control pins (1G and 2G) are held high and a negative clock edge is detected on the CLK input. The device operates in a 2.5-V and 3.3-V environment. The built-in output enable glitch suppression ensures a synchronized output enable sequence to distribute full period clock signals. The CDCVF2310 is characterized for operation from –55°C to 125°C.

The CDCVF2505 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. It uses a PLL to precisely align, in both frequency and phase, the output clocks (1Y[0–3] and CLKOUT) to the input clock signal (CLKIN). The CDCVF2505 operates at 3.3 V. It also provides integrated series-damping resistors that make it ideal for driving point-to-point loads. One bank of five outputs provides low-skew, low-jitter copies of CLKIN. Output duty cycles are adjusted to 50 percent, independent of duty cycle at CLKIN. The device automatically goes in power-down mode when no input signal is applied to CLKIN. Unlike many products containing PLLs, the CDCVF2505 does not require an external RC network. The loop filter for the PLLs is included on-chip, minimizing component count, space, and cost. Because it is based on the PLL circuitry, the CDCVF2505 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization is required following power up and application of a fixed-frequency, fixed-phase signal at CLKIN, and following any changes to the PLL reference. The CDCVF2505 is characterized for operation from –40°C to 85°C. The CDCVF2505 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. It uses a PLL to precisely align, in both frequency and phase, the output clocks (1Y[0–3] and CLKOUT) to the input clock signal (CLKIN). The CDCVF2505 operates at 3.3 V. It also provides integrated series-damping resistors that make it ideal for driving point-to-point loads. One bank of five outputs provides low-skew, low-jitter copies of CLKIN. Output duty cycles are adjusted to 50 percent, independent of duty cycle at CLKIN. The device automatically goes in power-down mode when no input signal is applied to CLKIN. Unlike many products containing PLLs, the CDCVF2505 does not require an external RC network. The loop filter for the PLLs is included on-chip, minimizing component count, space, and cost. Because it is based on the PLL circuitry, the CDCVF2505 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization is required following power up and application of a fixed-frequency, fixed-phase signal at CLKIN, and following any changes to the PLL reference. The CDCVF2505 is characterized for operation from –40°C to 85°C.

The CDCVF25084 is a high-performance, low-skew, low-jitter, phase-lock loop clock multiplier. It uses a PLL to precisely align, in both frequency and phase, the output clocks to the input clock signal including a multiplication factor of four. The CDCVF25084 operates from a nominal supply voltage of 3.3 V. The device also includes integrated series-damping resistors in the output drivers that make it ideal for driving point-to-point loads. Two banks of four outputs each provide low-skew, low-jitter copies of CLKIN x four. All outputs operate at the same frequency. Output duty cycles are adjusted to 50%, independent of duty cycle at CLKIN. The device automatically goes into power-down mode when no input signal is applied to CLKIN and the outputs go into a low state. Unlike many products containing PLLs, the CDCVF25084 does not require an external RC network. The loop filter for the PLL is included on-chip, minimizing component count, space, and cost. Because it is based on a PLL circuitry, the CDCVF25084 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization is required following power up and application of a fixed-frequency signal at CLKIN and any following changes to the PLL reference. The CDCVF25084 is characterized for operation from –40°C to 85°C. The CDCVF25084 is a high-performance, low-skew, low-jitter, phase-lock loop clock multiplier. It uses a PLL to precisely align, in both frequency and phase, the output clocks to the input clock signal including a multiplication factor of four. The CDCVF25084 operates from a nominal supply voltage of 3.3 V. The device also includes integrated series-damping resistors in the output drivers that make it ideal for driving point-to-point loads. Two banks of four outputs each provide low-skew, low-jitter copies of CLKIN x four. All outputs operate at the same frequency. Output duty cycles are adjusted to 50%, independent of duty cycle at CLKIN. The device automatically goes into power-down mode when no input signal is applied to CLKIN and the outputs go into a low state. Unlike many products containing PLLs, the CDCVF25084 does not require an external RC network. The loop filter for the PLL is included on-chip, minimizing component count, space, and cost. Because it is based on a PLL circuitry, the CDCVF25084 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization is required following power up and application of a fixed-frequency signal at CLKIN and any following changes to the PLL reference. The CDCVF25084 is characterized for operation from –40°C to 85°C.

The CDCVF2509 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. The device uses a PLL to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal. The device is specifically designed for use with synchronous DRAMs. The CDCVF2509 operates at a 3.3V VCCand provides integrated series-damping resistors designed for driving point-to-point loads. One bank of five outputs and one bank of four outputs provide nine low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50%, independent of the duty cycle at CLK. Each bank of outputs is enabled or disabled separately through the control (1G and 2G) inputs. When the G inputs are high, the outputs switch in phase and frequency with CLK. When the G inputs are low, the outputs are disabled to the logic-low state. Unlike many products containing PLLs, the CDCVF2509 does not require external RC networks. The loop filter for the PLL is included on-chip, minimizing component count, board space, and cost. The device is based on PLL circuitry, therefore the CDCVF2509 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization time is required following power up and application of a fixed-frequency, fixed-phase signal at CLK, and following any changes to the PLL reference or feedback signals. The PLL can be bypassed by strapping AVCC to ground. The CDCVF2509A is characterized for operation from 0°C to 85°C. For application information, see theHigh Speed Distribution Design Techniques for CDC509/516/2509/2510/2516andUsing CDC2509A/2510A PLL with Spread Spectrum Clocking (SSC)application notes. The CDCVF2509 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. The device uses a PLL to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal. The device is specifically designed for use with synchronous DRAMs. The CDCVF2509 operates at a 3.3V VCCand provides integrated series-damping resistors designed for driving point-to-point loads. One bank of five outputs and one bank of four outputs provide nine low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50%, independent of the duty cycle at CLK. Each bank of outputs is enabled or disabled separately through the control (1G and 2G) inputs. When the G inputs are high, the outputs switch in phase and frequency with CLK. When the G inputs are low, the outputs are disabled to the logic-low state. Unlike many products containing PLLs, the CDCVF2509 does not require external RC networks. The loop filter for the PLL is included on-chip, minimizing component count, board space, and cost. The device is based on PLL circuitry, therefore the CDCVF2509 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization time is required following power up and application of a fixed-frequency, fixed-phase signal at CLK, and following any changes to the PLL reference or feedback signals. The PLL can be bypassed by strapping AVCC to ground. The CDCVF2509A is characterized for operation from 0°C to 85°C. For application information, see theHigh Speed Distribution Design Techniques for CDC509/516/2509/2510/2516andUsing CDC2509A/2510A PLL with Spread Spectrum Clocking (SSC)application notes.

The CDCVF2510 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. It uses a phase-lock loop (PLL) to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal. It is specifically designed for use with synchronous DRAMs. The CDCVF2510 operates at a 3.3-V VCC. It also provides integrated series-damping resistors that make it ideal for driving point-to-point loads. One bank of 10 outputs provides 10 low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50%, independent of the duty cycle at CLK. Outputs are enabled or disabled via the control (G) input. When the G input is high, the outputs switch in phase and frequency with CLK; when the G input is low, the outputs are disabled to the logic-low state. Unlike many products containing PLLs, the CDCVF2510 does not require external RC networks. The loop filter for the PLL is included on-chip, minimizing component count, board space, and cost. Because it is based on PLL circuitry, the CDCVF2510 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization time is required following power up and application of a fixed-frequency, a fixed-phase signal at CLK, or following any changes to the PLL reference or feedback signals. The PLL can be bypassed for test purposes by strapping AVCCto ground. The CDCVF2510 is characterized for operation from 0°C to 85°C. For application information see the application reportsHigh Speed Distribution Design Techniques for CDC509/516/2509/2510/2516(SLMA003) andUsing CDC2509A/2510A PLL With Spread Spectrum Clocking (SSC)(SCAA039). The CDCVF2510 is a high-performance, low-skew, low-jitter, phase-lock loop (PLL) clock driver. It uses a phase-lock loop (PLL) to precisely align, in both frequency and phase, the feedback (FBOUT) output to the clock (CLK) input signal. It is specifically designed for use with synchronous DRAMs. The CDCVF2510 operates at a 3.3-V VCC. It also provides integrated series-damping resistors that make it ideal for driving point-to-point loads. One bank of 10 outputs provides 10 low-skew, low-jitter copies of CLK. Output signal duty cycles are adjusted to 50%, independent of the duty cycle at CLK. Outputs are enabled or disabled via the control (G) input. When the G input is high, the outputs switch in phase and frequency with CLK; when the G input is low, the outputs are disabled to the logic-low state. Unlike many products containing PLLs, the CDCVF2510 does not require external RC networks. The loop filter for the PLL is included on-chip, minimizing component count, board space, and cost. Because it is based on PLL circuitry, the CDCVF2510 requires a stabilization time to achieve phase lock of the feedback signal to the reference signal. This stabilization time is required following power up and application of a fixed-frequency, a fixed-phase signal at CLK, or following any changes to the PLL reference or feedback signals. The PLL can be bypassed for test purposes by strapping AVCCto ground. The CDCVF2510 is characterized for operation from 0°C to 85°C. For application information see the application reportsHigh Speed Distribution Design Techniques for CDC509/516/2509/2510/2516(SLMA003) andUsing CDC2509A/2510A PLL With Spread Spectrum Clocking (SSC)(SCAA039).

The CDCVF310 is a high-performance, low-skew clock buffer that operates up to 200 MHz. Two banks of five outputs each provide low-skew copies of CLK. After power up, the default state of the outputs is low regardless of the state of the control pins. For normal operation, the outputs of bank 1Y[0:4] or 2Y[0:4] can be placed in a low state when the control pins (1G or 2G, respectively) are held low and a negative clock edge is detected on the CLK input. The outputs of bank 1Y[0:4] or 2Y[0:4] can be switched into the buffer mode when the control pins (1G and 2G) are held high and a negative clock edge is detected on the CLK input. The device operates in a 2.5-V and 3.3-V environment. The built-in output enable glitch suppression ensures a synchronized output enable sequence to distribute full period clock signals. The CDCVF310 is characterized for operation from -40°C to 85°C. The CDCVF310 is a high-performance, low-skew clock buffer that operates up to 200 MHz. Two banks of five outputs each provide low-skew copies of CLK. After power up, the default state of the outputs is low regardless of the state of the control pins. For normal operation, the outputs of bank 1Y[0:4] or 2Y[0:4] can be placed in a low state when the control pins (1G or 2G, respectively) are held low and a negative clock edge is detected on the CLK input. The outputs of bank 1Y[0:4] or 2Y[0:4] can be switched into the buffer mode when the control pins (1G and 2G) are held high and a negative clock edge is detected on the CLK input. The device operates in a 2.5-V and 3.3-V environment. The built-in output enable glitch suppression ensures a synchronized output enable sequence to distribute full period clock signals. The CDCVF310 is characterized for operation from -40°C to 85°C.