W83194R-67A |
RFQ for W83194R-67A Required Field |
 |
| Product | Manufacturers | Pack | D/C |
| W83194R-67A | - | SSOP48 | 2005+ |
The W83194R-67A is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel Pentium , AMD and Cyrix. W83194R-67A provides sixteen CPU/PCI frequencies which are externally selectable with smooth transitions. W83194R-67AA also provides 13 SDRAM clocks controlled by the none-delay buffer_in pin.
The W83194R-67A accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. Spread spectrum built in at ¡Ó0.5% or ¡Ó0.25% to reduce EMI. Programmable stopping individual clock outputs and frequency selection through I2C interface. The device meets the Pentium power-up stabilization, which requires CPU and PCI clocks be stable within 2 ms after power-up.
High drive six PCI and thirteen SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads. Two CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as maintaining 50¡Ó 5% duty cycle. The fixed frequency outputs as REF, 24MHz, and 48 MHz provide better than 0.5V /ns slew rate.
Features |
| · Supports Pentium™ , AMD, Cyrix CPU with I2C.· 4 CPU clocks (one free-running CPU clock)· 13 SDRAM clocks for 3 DIMs· 6 PCI synchronous clocks· Optional single or mixed supply:(Vddq1=Vddq2 = Vddq3 = Vddq4 = VddL1 =VddL2= 3.3V) or (Vddq1= Vddq2 = Vddq3=Vddq4 = 3.3V, VddL1 = VdqL2 = 2.5V)· < 250ps skew among CPU and SDRAM clocks· < 4ns propagation delay SDRAM from buffer input· Skew from CPU(earlier) to PCI clock -1 to 4ns, center 2.6ns.· Smooth frequency switch with selections from 60 MHz to 124 MHz CPU· I2C 2-Wire serial interface and I2C read back· ¡Ó0.25% or ¡Ó0.5% spread spectrum function to reduce EMI· Programmable registers to enable/stop each output and select modes (mode as Tri-state or Normal )· 2ms power up clock stable time· MODE pin for power Management· One 48 MHz for USB & one 24 MHz for super I/O· 48-pin SSOP package |
|
Symbol |
PARAMETER |
RATING |
|
Vdd , VIN |
Voltage on any pin with respect to GND |
-0.5V to +7.0V |
|
TSTG |
Storage Temperature |
-65° C to +150° C |
|
TB |
Ambient Temperature |
-55° C to +125° C |
|
TA |
Operating Temperature |
0°C to + 70°C |
| Models | MFG | Pack |
| W83176R-251 | ||
| W83176R-732 | 0409+ | |
| W83178S | SOP28 | |
| W83193R-0.4 | ||
| W83193R-02 | SOP48 | |
| W83193R-04 | ||
| W83193R-04A | ||
| W83194AR-73 | SSOP48 | |
| W83194AR-96 | 50 | |
| W83194AR-W | 1500 | |
| W83194AR-WE | 50 | |
| W83194BR | ||
| W83194BR-39A | ||
| W83194BR-39B | SOP48 | |
| W83194BR-63S | SSOP48 | |
| W83194BR-640 | SSOP48 | |
| W83194BR-655 | ||
| W83194BR-97 | 7000 | |
| W83194BR-B | 2500 | |
| W83194BR-C | SSOP48 | |
| W83194BR-KT | SSOP48 | |
| W83194R | ||
| W83194R-04 | ||
| W83194R-17 | SSOP48 | |
| W83194R-17A | SSOP48 | |
| W83194R-37 | SSOP48 | |
| W83194R-39 | SSOP48 | |
| W83194R-39A | SSOP48 | |
| W83194R-58 | SSOP48 | |
| W83194R-58A | SSOP48 | |
| W83194R-630A | ||
| W83194R-630 | ||
| W83194R630 | ||
| W83194R-58A | ||
| W83194R-58 | ||
| W83194R-39A | ||
| W83194R-39 | ||
| W83194R-37 | ||
| W83194R-17A | ||
| W83194R-17 | ||
| W83194BR-SD | ||
| W83194BR-S | ||
| W83194BR-P4X | ||
| W83194BR-KX | ||
| W83194BR-KT | ||
| W83194BR-C | ||
| W83194BR-B | ||
| W83194BR-97 | ||
| W83194BR-911 | ||
| W83194BR-903 |
