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NXP Semiconductors Electronic Components Datasheet

PCK2001 Datasheet

14.318-150 MHz I2C 1:18 Clock Buffer

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INTEGRATED CIRCUITS
PCK2001
14.318-150 MHz I2C 1:18 Clock Buffer
Product specification
Supersedes data of 1998 Oct 27
1999 Jul 06
Philips
Semiconductors


NXP Semiconductors Electronic Components Datasheet

PCK2001 Datasheet

14.318-150 MHz I2C 1:18 Clock Buffer

No Preview Available !

Philips Semiconductors
14.318–150 MHz I2C 1:18 Clock Buffer
Product specification
PCK2001
FEATURES
HIGH speed, LOW noise non-inverting 1–18 buffer
Typically used to support four SDRAM DIMMs
Multiple VDD, VSS pins for noise reduction
3.3V operation
Separate 3-State pin for testing
ESD protection exceeds 2000V per Standard 801.2
Optimized for 66MHz, 100MHz and 133MHz operation
175 ps skew outputs
Available in 48-pin SSOP package
See PCK2001M for mobile (reduced pincount) 28-pin 1-10 buffer
version
Individual clock output enable/disable via I2C
DESCRIPTION
The PCK2001 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
tPHL
tr
tf
ICC
Propagation delay
BUF_IN to BUF_OUTn
Rise time
Fall time
Total supply current
CONDITIONS
VCC = 3.3V, CL = 30pF
VCC = 3.3V, CL = 30pF
VCC = 3.3V, CL = 20pF
VCC = 3.465V
TYPICAL
2.5
2.5
1.0
700
50
UNIT
ns
ns
ps
µA
ORDERING INFORMATION
PACKAGES
48-Pin Plastic SSOP
TEMPERATURE RANGE
0°C to +70°C
ORDER CODE
PCK2001 DL
DRAWING NUMBER
SOT370-1
PIN CONFIGURATION
VDD0 1
RESERVED 2
RESERVED 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
SW00248
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)
3.3V Power supply
6, 10, 15,
19, 22,
27, 30, 34,
39, 43
23
26
Input
Input
Input
VSS (0–9)
VDDI2C
VSSI2C
Ground
3.3V I2C Power
supply
I2C Ground
1999 Jul 06
2 853-2072 21924


Part Number PCK2001
Description 14.318-150 MHz I2C 1:18 Clock Buffer
Maker NXP
PDF Download

PCK2001 Datasheet PDF






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