PCK2001R Ver la hoja de datos (PDF) - Philips Electronics
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Fabricante
PCK2001R Datasheet PDF : 12 Pages
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Philips Semiconductors
14.318 – 133 MHz I2C 1:6 clock buffer
Product specification
PCK2001R
FEATURES
• Typically used to support four registered SDRAM DIMMs
• 16-pin SSOP package
• See PCK2001 for 48-pin 1:18 buffer part
• See PCK2001M for 28-pin 1:10 buffer part
• Optimized for 33 MHz, 66 MHz, 100 MHz and 133 MHz operation
• Part-to-part skew < 500 ps
• 175 ps skew outputs typical
• Individual SDRAM clock output enable/disable via I2C
• Multiple VDD, VSS pins for noise reduction
• 3.3 V operation
• ESD protection exceeds 2000 V per Standard 801.2
DESCRIPTION
The PCK2001R is a 1–6 fanout buffer used for 133/100 MHz CPU,
66/33 MHz PCI, 14.318 MHz REF, or 133/100/66 MHz SDRAM clock
distribution. 6 outputs are typically used to support up to 4 registered
SDRAM DIMMs commonly found in server applications.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
tPLH
tPHL
tr
tf
ICC
Propagation delay
BUF_IN to BUF_OUTn
Rise time
Fall time
Total supply current
CONDITIONS
VCC = 3.3 V, CL = 30 pF
VCC = 3.3 V, CL = 30 pF
VCC = 3.3 V, CL = 20 pF
VCC = 3.465 V
ORDERING INFORMATION
PACKAGES
16-Pin Plastic SSOP
TEMPERATURE RANGE
0°C to +70°C
ORDER CODE
PCK2001RDB
TYPICAL
2.5
2.5
1.0
700
50
UNIT
ns
ns
ps
µA
DRAWING NUMBER
SOT369-1
PIN CONFIGURATION
BUF_OUT0 1
VSS0 2
BUF_OUT2 3
BUF_IN 4
VSS 5
BUF_OUT7 6
VDDI2C 7
SDA 8
16 VDD9
15 BUF_OUT14
14 VSS9
13 BUF_OUT11
12 VDD5
11 BUF_OUT17
10 VSSI2C
9 SCL
TOP VIEW
SA00542
Intel and Pentium are registered trademarks of Intel Corporation.
I2C is a trademark of Philips Semiconductors Corporation.
PIN DESCRIPTION
PIN
NUMBER
I/O
TYPE
1, 3
Output
13, 15
Output
6, 11
4
8
9
12, 16
Output
Input
I/O
Input
Input
2, 14
7
10
Input
Input
Input
SYMBOL
BUF_OUT
(0, 2)
BUF_OUT
(11, 14)
BUF_OUT
(7, 17)
BUF_IN
SDA
SCL
VDD
(5, 9)
VSS
(0, 9)
VDDI2C
VSSI2C
FUNCTION
Buffered clock outputs
Buffered clock outputs
Buffered clock outputs
Buffered clock input
I2C serial data
I2C serial clock
3.3 V power supply
Ground
3.3 V I2C power supply
I2C ground
2000 Jul 25
2
853-2210 24202
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