W83194R-81

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 C...

product image

W83194R-81 Picture
SeekIC No. : 004545139 Detail

W83194R-81: 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 = Vd...

floor Price/Ceiling Price

Part Number:
W83194R-81
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

SeekIC Buyer Protection PLUS - newly updated for 2013!

  • Escrow Protection.
  • Guaranteed refunds.
  • Secure payments.
  • Learn more >>

Month Sales

268 Transactions

Rating

evaluate  (4.8 stars)

Upload time: 2024/3/27

Payment Methods

All payment methods are secure and covered by SeekIC Buyer Protection PLUS.

Notice: When you place an order, your payment is made to SeekIC and not to your seller. SeekIC only pays the seller after confirming you have received your order. We will also never share your payment details with your seller.
Product Details

Description



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



Pinout

  Connection Diagram


Specifications

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




Description

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.




Customers Who Bought This Item Also Bought

Margin,quality,low-cost products with low minimum orders. Secure your online payments with SeekIC Buyer Protection.
Sensors, Transducers
Semiconductor Modules
Connectors, Interconnects
Soldering, Desoldering, Rework Products
Tapes, Adhesives
803
Potentiometers, Variable Resistors
View more