PCK2002DGG データシートの表示（PDF） - Philips Electronics
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PCK2002DGG Datasheet PDF : 12 Pages
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Philips Semiconductors
0–300 MHz I2C 1:18 clock buffer
Product data
PCK2002
FEATURES
• HIGH speed, LOW noise non-inverting 1–18 buffer
• Typically used to support four SDRAM DIMMs
• Multiple VDD, VSS pins for noise reduction
• 3.3 V operation
• Separate 3-State pin for testing
• ESD protection exceeds 2000 V per Standard 801.2
• Optimized for 66 MHz, 100 MHz and 133 MHz operation
• Typical 175 ps skew outputs
• Available in 48-pin SSOP and TSSOP packages
• See PCK2002M for mobile (reduced pincount) 28-pin 1-10 buffer
version
• Spread spectrum compliant
• Individual clock output enable/disable via I2C
DESCRIPTION
The PCK2002 is a 1–18 fanout buffer used for 133/100 MHz CPU,
66/33 MHz PCI, 14.318 MHz REF, or 133/100/66 MHz SDRAM
clock distribution. 18 outputs are typically used to support up to
4 SDRAM DIMMS commonly found in desktop, workstation or
server applications.
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
Propagation delay
tPHL
BUF_IN to BUF_OUTn
tr
Rise time
tf
Fall time
ICC
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
TYPICAL
2.7
2.9
1.1
1.0
35
UNIT
ns
ns
ns
µA
ORDERING INFORMATION
PACKAGES
48-Pin Plastic TSSOP
48-Pin Plastic SSOP
TEMPERATURE RANGE
0 to +70 °C
0 to +70 °C
ORDER CODE
PCK2002DGG
PCK2002DL
DRAWING NUMBER
SOT362-1
SOT370-1
PIN CONFIGURATION
RESERVED 1
RESERVED 2
VDD0 3
BUF_OUT0 4
BUF_OUT1 5
VSS0 6
VDD1 7
BUF_OUT2 8
BUF_OUT3 9
VSS1 10
BUF_IN 11
VDD2 12
BUF_OUT4 13
BUF_OUT5 14
VSS2 15
VDD3 16
BUF_OUT6 17
BUF_OUT7 18
VSS3 19
VDD4 20
BUF_OUT16 21
VSS4 22
VDDI2C 23
SDA 24
48 RESERVED
47 RESERVED
46 VDD9
45 BUF_OUT15
44 BUF_OUT14
43 VSS9
42 VDD8
41 BUF_OUT13
40 BUF_OUT12
39 VSS8
38 OE
37 VDD7
36 BUF_OUT11
35 BUF_OUT10
34 VSS7
33 VDD6
32 BUF_OUT9
31 BUF_OUT8
30 VSS6
29 VDD5
28 BUF_OUT17
27 VSS5
26 VSSI2C
25 SCL
SW00731
I2C is a trademark of Philips Semiconductors Corporation.
PIN DESCRIPTION
PIN
I/O
NUMBER TYPE
SYMBOL
FUNCTION
4, 5, 8, 9 Output BUF_OUT (0–3) Buffered clock outputs
13, 14, 17, 18 Output BUF_OUT (4–7) Buffered clock outputs
31, 32, 35,
36
Output
BUF_OUT
(8–11)
Buffered clock outputs
40, 41, 44,
45
Output
BUF_OUT
(12–15)
Buffered clock outputs
21, 28
Output
BUF_OUT
(16–17)
Buffered clock outputs
11
Input
BUF_IN
Buffered clock input
38
Input
24
I/O
25
Input
OE
SDA
SCL
Active high output
enable
I2C serial data
I2C serial clock
3, 7, 12, 16,
20, 29, 33,
37, 42, 46
Input
VDD (0–9)
3.3 V Power supply
6, 10, 15,
19, 22,
27, 30, 34,
39, 43
23
26
1, 2, 47, 48
Input
Input
Input
n/a
VSS (0–9)
Ground
VDDI2C
VSSI2C
RESERVED
3.3 V I2C Power
supply
I2C Ground
Undefined
2001 Jul 19
2
853-2267 26745
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