PCK2002MDB Ver la hoja de datos (PDF) - Philips Electronics
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PCK2002MDB Datasheet PDF : 12 Pages
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Philips Semiconductors
0–300 MHz I2C 1:10 clock buffer
Product data
PCK2002M
FEATURES
• HIGH speed, LOW noise non-inverting 1:10 buffer
• Mobile (reduced pincount) version of PCK2002
• Typically used to support two SDRAM DIMMs
• 28-pin SSOP and TSSOP packages
• See PCK2002 for 48-pin 1-18 buffer part supporting up to
4 SDRAM DIMMs
• Optimized for 66 MHz, 100 MHz and 133 MHz operation
• Multiple VDD and VSS pins for noise reduction
• Spread spectrum compliant
• 175 ps skew outputs
• Individual clock output enable/disable via I2C
DESCRIPTION
The PCK2002M is a 1–10 fanout buffer used for 133/100 MHz CPU,
66/33 MHz PCI, 14.318 MHz REF, or 133/100/66 MHz SDRAM
clock distribution. 10 outputs are typically used to support up to
2 SDRAM DIMMs commonly found in laptop or mobile applications.
The PCK2002M has the same features and operating characteristics
of the PCK2002 and is available in the SSOP 28 pin package.
All clock outputs meet Intel’s drive, rise/fall time, accuracy, and skew
requirements. An I2C interface is included to allow each output to be
enabled/disabled individually. An output disabled via the I2C
interface will be held in the LOW state. In addition, there is an OE
input which 3-states all outputs.
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 = 30 pF
VCC = 3.465 V
ORDERING INFORMATION
PACKAGES
28-Pin Plastic SSOP
28-Pin Plastic TSSOP
TEMPERATURE RANGE
0 to +70 °C
0 to +70 °C
ORDER CODE
PCK2002MDB
PCK2002MPW
TYPICAL
2.7
2.9
1.1
1.0
35
UNIT
ns
ns
ns
µA
DRAWING NUMBER
SOT341–1
SOT361–1
PIN CONFIGURATION
VDD0 1
BUF_OUT0 2
BUF_OUT1 3
VSS0 4
VDD1 5
BUF_OUT2 6
BUF_OUT3 7
VSS1 8
BUF_IN 9
VDD4 10
BUF_OUT16 11
VSS4 12
VDDI2C 13
SDA 14
TOP VIEW
28 VDD9
27 BUF_OUT15
26 BUF_OUT14
25 VSS9
24 VDD8
23 BUF_OUT13
22 BUF_OUT12
21 VSS8
20 OE
19 VDD5
18 BUF_OUT17
17 VSS5
16 VSSI2C
15 SCL
SA00550
Intel and Pentium are registered trademarks of Intel Corporation.
I2C is a trademark of Philips Semiconductors Corporation.
PIN DESCRIPTION
PIN
I/O
NUMBER TYPE
SYMBOL
2, 3, 6, 7 Output
BUF_OUT
(0–3)
22, 23, 26,
27
Output
BUF_OUT
(12–15)
11, 18
Output
BUF_OUT
(16–17)
9
Input
BUF_IN
20
Input
OE
14
15
1, 5, 10,
19, 24, 28
4, 8, 12,
17, 21, 25
13
16
I/O
Input
SDA
SCL
Input VDD (0, 1, 4, 5, 8, 9)
Input
Input
Input
VSS (0, 1, 4, 5, 8, 9)
VDDI2C
VDDI2C
FUNCTION
Buffered clock outputs
Buffered clock outputs
Buffered clock outputs
Buffered clock input
Active high output
enable
I2C serial data
I2C serial clock
3.3 V power supply
Ground
3.3 V I2C power supply
I2C ground
2001 Jul 19
2
853-2268 26745
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