PI6C185-02B Datasheet, PDF (1/6 Pages) Pericom Semiconductor Corporation – Precision 1-7 Clock Buffer

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Precision 1-7 Clock Buffer
Features
• High speed: 140 MHz
• Low noise non-inverting 1-7 buffer
• Supports up to three SDRAM DIMMs
• Low skew (<250ps) between any two output clocks
• I²C Serial Configuration interface
• Multiple V_dd, V_ss pins for noise reduction
• 3.3V power supply voltage
• 16-pin TSSOP (L) and QSOP (Q) packages
Description
The PI6C185-02B, a high-speed low-noise 1-7 non-inverting
buffer, is designed for SDRAM clock buffer applications. It is
intended to be used with the PI6C10X clock generator for Intel
Architecture-based Mobile systems.
At power up, all SDRAM outputs are enabled and active. The I2C
Serial control may be used to individually activate/deactivate any
of the seven output drivers.
Note:
Purchase of I2C components from Pericom conveys a license to
use them in an I2C system as defined by Philips.
Block Diagram
BUF_IN
SDRAM0
SDRAM1
SDRAM2
SDRAM3
Pin Configuration
Vdd 1
16 SDRAM6
SDRAM0 2
15 SDRAM5
SDRAM1
3
14
16-Pin
Vss
Vss 4 _L,Q 13 Vdd
BUF_IN 5
12 SDRAM4
SDRAM2 6
11 SDRAM3
Vdd 7
10 Vss
SDATA 8
9 SCLK
SDRAM6
SDATA
SCLOCK
I2C
I/O
1
PS8469 05/03/00