PI6C182 Datasheet, PDF (1/7 Pages) Pericom Semiconductor Corporation – Precision 1-10 Clock Buffer

PI6C182
Precision 1-10 Clock Buffer
Features
• Low noise non-inverting 1-10 buffer
• Supports frequency up to 125 MHz (PI6C182A)
• Supports up to four SDRAM DIMMs
• Low skew (<200ps) between any two output clocks
• I²C Serial Configuration interface
• Multiple V_DD, V_SS pins for noise reduction
• 3.3V power supply voltage
• Separate Hi-Z state pin for testing
• Packaging:
-28-pin SSOP (H)
Description
Pericom Semiconductor’s PI6C clock series is produced using
the company’s advanced submicron CMOS technology, achieving
industry leading speed.
The PI6C182 is a high-speed low-noise 1-10 noninverting buffer
designed for SDRAM clock buffer applications, supports frequen-
cies up to 110 MHz.
At power up all SDRAM output are enabled and active. The I²C
Serial control may be used to individually activate/deactivate any
of the 10 output drivers.
The output enable (OE) pin may be pulled low to Hi-Z state all
outputs.
Note:
Purchase of I²C components from Pericom conveys a license to
use them in an I²C system as defined by Philips.
Diagram
BUF_IN
OE
SDATA
I2C
SCLOCK
I/O
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM9
Pin Configuration
VDD0 1
SDRAM0 2
SDRAM1 ₃
VSS0 4
VDD1 5
SDRAM2 6
SDRAM3 7
VSS1 8
BUF_IN 9
VDD2 10
SDRAM8 11
VSS2 12
VDDIIC 13
SDATA 14
28 VDD5
27 SDRAM7
26 SDRAM6
25 VSS5
24 VDD4
23 SDRAM5
22 SDRAM4
21 VSS4
20 OE
19 _VDD3
18 SDRAM9
17 VSS3
16 VSSIIC
15 SCLOCK
1
PS8165D
07/19/04