Purchase CY2254A, In-stock CY2254A From SeekIC.
Part Number: CY2254A
Description: The CY2254A is a Clock Synthesizer/Driver that provides the multiple clocks required for a Pentium-based PC. The CY2254...
- Table of contents:
CY2254A
-
Suppliers
DataSheet
General Description
CY2254A General Description
The CY2254A is a Clock Synthesizer/Driver that provides the multiple clocks required for a Pentium-based PC. The CY2254A has low-skew outputs (< 250 ps between the CPU Clocks, < 250 ps between the PCI Clocks). In addition, the CY2254A CPU clock outputs have less than 200 ps cycle-to-cycle jitter. Finally, both the PCI and CPU clock outputs meet the 1 V/ns slew rate requirement of a Pentium processor-based system.
The CY2254A accepts a 14.318 MHz reference signal as its input. The CY2254A has 2 PLLs, one of which generates the CPU and PCI clocks, and the other generates the I/O and Keyboard Controller or USB clocks. The CY2254A runs off either a 3.3V or 5V supply.
The CY2254A is available in two options. The −1 option supports the Intel Triton PCIset and provides a 12 MHz keyboard clock on pin 25. The −2 option provides a 48 MHz USB clock on pin 25 and supports the Cyrix® M1 processor.
CY2254A Maximum Ratings
Supply Voltage........................................................−0.5 to +7.0V
Input Voltage................................................. −0.5V to VDD + 0.5
Storage Temperature (Non-Condensing) .... −65°C to +150°C
Junction Temperature............................................... +150°C
Package Power Dissipation.............................................. 1W
Static Discharge Voltage............................................ >2000V
Input Voltage................................................. −0.5V to VDD + 0.5
Storage Temperature (Non-Condensing) .... −65°C to +150°C
Junction Temperature............................................... +150°C
Package Power Dissipation.............................................. 1W
Static Discharge Voltage............................................ >2000V
CY2254A Features
• Multiple clock outputs to meet requirements of most Pentium® motherboards
-Four pin-selectable CPU clocks @ 66.66 MHz, 60.0 MHz, and 50.0 MHz for support of Intel Triton™ PCIset based PC
-55.0 MHz pin-selectable CPU clock also available (−2 option only)
-Six PCI clocks at 1/2 CPU Clock frequency
-One I/O clock @ 24 MHz
-One Keyboard Controller clock @ 12 MHz (−1 option) or one Universal Serial Bus clock @ 48 MHz (−2 option)
-Two Ref. clocks @ 14.318 MHz
-Ref. 14.318 MHz Xtal oscillator input
• CPU clock jitter < 200 ps cycle-to-cycle
• Low skew outputs
-< 250 ps between CPU clocks
-< 250 ps between PCI clocks
-< 500 ps between CPU and PCI clocks (−2 option)
-CPU clock leads PCI clock by +1 ns min. to +4 ns max. (−1 option)
-Four pin-selectable CPU clocks @ 66.66 MHz, 60.0 MHz, and 50.0 MHz for support of Intel Triton™ PCIset based PC
-55.0 MHz pin-selectable CPU clock also available (−2 option only)
-Six PCI clocks at 1/2 CPU Clock frequency
-One I/O clock @ 24 MHz
-One Keyboard Controller clock @ 12 MHz (−1 option) or one Universal Serial Bus clock @ 48 MHz (−2 option)
-Two Ref. clocks @ 14.318 MHz
-Ref. 14.318 MHz Xtal oscillator input
• CPU clock jitter < 200 ps cycle-to-cycle
• Low skew outputs
-< 250 ps between CPU clocks
-< 250 ps between PCI clocks
-< 500 ps between CPU and PCI clocks (−2 option)
-CPU clock leads PCI clock by +1 ns min. to +4 ns max. (−1 option)
CY2254A Connection Diagram
CY2254A
PDF/DataSheet Download
- Datasheet: CY2254A
- File Size: 96909 KB
- Manufacturer: CYPRESS [Cypress Semiconductor]
- Click here to Download
- ·CY2030
- Cypress
- USB, Audio, and I/O Clock Generator for Intel 82440LX Chipset
- 89675 KB
- ·CY2037
- CYPRESS [Cypress Semiconductor]
- High Accuracy EPROM Programmable PLL Die for Crystal Oscillators
- 88724 KB
- ·CY2037-2WAF
- CYPRESS
- High Accuracy EPROM Programmable PLL Die for Crystal Oscillators
- 376832 KB
- ·CY2037-2WAF-IL
- CYPRESS [Cypress Semiconductor]
- High-Accuracy EPROM Programmable PLL Die for Crystal Oscillators
- 270845 KB
- ·CY2037-3WAF
- CYPRESS
- High Accuracy EPROM Programmable PLL Die for Crystal Oscillators
- 376832 KB
- ·CY2037-3WAF-IL
- CYPRESS [Cypress Semiconductor]
- High-Accuracy EPROM Programmable PLL Die for Crystal Oscillators
- 270845 KB
- ·CY2037AWAF
- CYPRESS
- High Accuracy EPROM Programmable PLL Die for Crystal Oscillators
- 376832 KB
- ·CY2037BWAF-IL
- CYPRESS [Cypress Semiconductor]
- High-Accuracy EPROM Programmable PLL Die for Crystal Oscillators
- 270845 KB
CY2254A Relative Products
CY22395FXI
IC CLOCK GEN PROG 16-TSSOP
-
CY22395FXCT
IC CLOCK GEN PROG 16-TSSOP
-
CY22395FXC
IC CLOCK GEN PROG 16-TSSOP
CY22395
-
CY22394FXIT
IC CLOCK GEN PROG 16-TSSOP
-
CY22394FXI
IC CLOCK GEN PROG 16-TSSOP
Hotspot Suppliers Product
TAJA226K006RNJ
Price: 0.038-0.043 USD
standard tantalum, SMD, 0.10 to 2200μF, 2.5V, Low profile options, General purpose, TAJA226K006RNJ
BCM5690A2KEB
Price: 1-2 USD
QFP, 12-port, gigabit ethernet multilayer switch, EBGA, Gigabit Ethernet SerDes per port
DAC7554IDGSR
Price: 4.68-5.08 USD
Low-Power, Low-Glitch, 12-Bit DAC, 10-MSOP, 2.7-V to 5.5-V Single Supply, -100 dB
BQ24090DGQ
Price: 3-3.5 USD
linear charger, –0.3 to 7 V, 10MSOP, 1.25 A, 1%, BQ24090DGQ, Texas
AM29F010B-70PI
Price: 5.2-6.3 USD
1 Megabit (128 K x 8-bit) CMOS, 5.0 Volt-only, Uniform Sector Flash Memory, DIP
LM3Z3V9T1G
Price: 0.01-0.1 USD
Zener diode, SOD-323, 200 mW
6MBP100RD060
Price: 55-58 USD
6MBP100RD060, Module, Fuji
PWB130A40
Price: 20-30 USD
PWB130A40 / THYRISTOR MODULE (NON-ISOLATED TYPE)
0402HPH-R22XJLW
Price: 0.0645-0.0726 USD
Ceramic Chip Inductors Coilcraft 0402HPH-R22XJLW
SKKT57/16E
Price: 13-15 USD
Thyristor / Diode Module, 60 A, 1.65 V, 3.5 mΩ, hard soldered joints
TPS54373
Price: 1.2-1.5 USD
0.9 ~ 3.3 V, 700kHz, PWM converter, TPS54373-237, TPS54373, Texas Instruments
FATC-10A-RED
Price: 0.1-3 USD
automotive fuse, replaceable mounting, 32.00 volts, 10.00 amps
