W83194R-81 |
RFQ for W83194R-81 Required Field |
 |
| Product | Manufacturers | Pack | D/C |
| W83194R-81 | - | SSOP48 | 2005+ |
The W83194R-81 is a Clock Synthesizer for SiS chipset. W83194R-81 provides all clocks required for high-speed RISC or CISC microprocessor such as AMD,Cyrix,Intel Pentium and also provides 16 different frequencies of CPU clocks frequency setting. All clocks are externally selectable with smooth transitions. The W83194R-81 makes SDRAM in synchronous or asynchronous frequency with CPU clocks.
The W83194R-81 provides I2C serial bus interface to program the registers to enable or disable each clock outputs and W83194R-81 provides the 0.25%, 0.5% center type spread spectrum to reduce EMI.
The W83194R-81 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads. 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™, Pentium™ Pro, AMD and Cyrix CPUs with I2C.· 3 CPU clocks· 13 SDRAM clocks for 3 DIMMs· 6 PCI synchronous clocks.· Optional single or mixed supply:(Vdd = Vddq4=Vddq3 = Vddq2b = 3.3V, Vddq2=2.5V) or(Vdd = Vddq4=Vddq3 = 3.3V, Vddq2=Vdq2b = 2.5V)· Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns· SDRAM frequency synchronous or asynchronous to CPU clocks· Smooth frequency switch with selections from 66 to 133mhz(including 90MHz)· I2C 2-Wire serial interface and I2C read back· 0.25%, 0.5% center type spread spectrum to reduce EMI· Programmable registers to enable/stop each output and select modes (mode as Tri-state or Normal )· MODE pin for power Management· 48 MHz for USB· 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-67B | ||
| W83194R-67A | ||
| 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 |
