Philips pck2001r DATASHEETS

INTEGRATED CIRCUITS

PCK2001R

2

14.318 – 133 MHz I

Product specification 2000 Jul 25

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C 1:6 clock buffer

Philips Semiconductors Product specification

PCK2001R14.318 – 133 MHz I2C 1:6 clock buffer

FEA TURES

•Typically used to support four registered SDRAM DIMMs

•16-pin SSOP package

•See PCK2001 for 48-pin 1:18 buffer part

•Individual SDRAM clock output enable/disable via I

•Multiple V

, VSS pins for noise reduction

DD

•3.3 V operation

•ESD protection exceeds 2000 V per Standard 801.2

2

C

•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

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS TYPICAL UNIT

t

PLH

t

PHL

t

r

t

f

I

CC

ORDERING INFORMATION

16-Pin Plastic SSOP 0°C to +70°C PCK2001RDB SOT369-1

Propagation delay
BUF_IN to BUF_OUT

n

VCC = 3.3 V, CL = 30 pF

Rise time VCC = 3.3 V, CL = 30 pF 1.0 ns
Fall time VCC = 3.3 V, CL = 20 pF 700 ps
Total supply current VCC = 3.465 V 50 µA

PACKAGES TEMPERATURE RANGE ORDER CODE DRAWING NUMBER

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.

2.5

2.5

ns

PIN CONFIGURATION

V

BUF_OUT0

BUF_OUT2

BUF_IN

BUF_OUT7

Intel and Pentium are registered trademarks of Intel Corporation.

2

I

C is a trademark of Philips Semiconductors Corporation.

1
215

V

SS0

3
4
5

V

SS

6
7

V

DDI2C

89

SDA SCL

TOP VIEW

16

DD9

BUF_OUT14
V

14

SS9

13

BUF_OUT11

12

V

DD5

BUF_OUT17

11

PCK2001R

10

V

SSI2C

SA00542

PIN DESCRIPTION

PIN

NUMBER

1, 3 Output

13, 15 Output

6, 11 Output

4 Input BUF_IN Buffered clock input
8 I/O SDA I2C serial data
9 Input SCL I2C serial clock

12, 16 Input

2, 14 Input

7 Input V

10 Input V

I/O

TYPE

SYMBOL FUNCTION

BUF_OUT

(0, 2)

BUF_OUT

(11, 14)

BUF_OUT

(7, 17)

V

DD

(5, 9)

V

SS

(0, 9)

DDI2C
SSI2C

Buffered clock outputs

Buffered clock outputs

Buffered clock outputs

3.3 V power supply

Ground

3.3 V I2C power supply
I2C ground

2000 Jul 25 853-2210 24202

2

Philips Semiconductors Product specification

SYMBOL

PARAMETER

CONDITION

UNIT

SYMBOL

PARAMETER

CONDITIONS

UNIT

2

14.318 – 133 MHz I

C 1:6 clock buffer

PCK2001R

FUNCTION TABLE

BUF_IN I2CEN BUF_OUTn

L X L
H H H
H L L

ABSOLUTE MAXIMUM RA TINGS

In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to V

V

DD

I

IK

V

I

I

OK

V

O

I

O

T

stg

P

TOT

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .

2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

DC 3.3V supply voltage –0.5 +4.6 V

DC input diode current VI < 0 –50 mA

DC output diode current VO > VDD or VO < 0 ±50 mA

DC output source or sink current VO ≥ 0 to V

Storage temperature range –65 +150 °C

Power dissipation per package

plastic medium-shrink SO (SSOP)

(VSS = 0V).

SS

DC input voltage Note 2 –0.5 5.5 V

DC output voltage Note 2 –0.5 VCC + 0.5 V

1, 2

DD

For temperature range: 0 to +70°C

above +55°C derate linearly with 11.3mW/K

LIMITS

MIN MAX

±50 mA

850 mW

RECOMMENDED OPERATING CONDITIONS

LIMITS

MIN MAX

V

T

C

V

V

amb

DD

L

I

O

Operating ambient temperature range in free air 0 +70 °C

DC 3.3V supply voltage 3.135 3.465 V

Capacitive load 20 30 pF

DC input voltage range 0 V

DC output voltage range 0 V

DD
DD

V
V

2000 Jul 25

3

Philips Semiconductors Product specification

TEST CONDITIONS

2

14.318 – 133 MHz I

C 1:6 clock buffer

PCK2001R

DC CHARACTERISTICS

LIMITS

T

SYMBOL PARAMETER

V
V

V

OH

V

OL

I

OH

I

OL

±I

I

CC

HIGH level input voltage 3.135 to 3.465 2.0 VDD + 0.3 V

IH

LOW level input voltage 3.135 to 3.465 VSS – 0.3 0.8 V

IL

3.3V output HIGH voltage 3.135 to 3.465 IOH = –1mA 3.1 – V

3.3V output LOW voltage 3.135 to 3.465 IOL= 1mA – 50 mV
Output HIGH current 3.135 to 3.465 V
Output LOW current 3.135 to 3.465 V
Input leakage current 3.465 –5 5 µA

I

Quiescent supply current 3.465 VI = VDD or GND IO = 0 – 100 µA

VDD(V) OTHER MIN MAX

= 1.5V –70 –185 mA

OUT

= 1.5V 65 160 mA

OUT

= 0°C to +70°C UNIT

amb

2000 Jul 25

4