1

8

2

7

3

6

4

5

CDCS503-Q1

IN

SSC_SEL 0

SSC_SEL 1

GND

VDD

OE

OUT

FS

CDCS503-Q1

www.ti.com

SCAS924B – MARCH 2012 – REVISED JUNE 2012

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

DEVICE INFORMATION

PACKAGE

PIN FUNCTIONS

SIGNAL

PIN

TYPE

DESCRIPTION

IN

1

I

LVCMOS clock input

OUT

6

O

LVCMOS clock output

SSC_SEL 0, 1

2, 3

I

Spread selection pins, internal pullup

OE

7

I

Output enable, internal pullup

FS

5

I

Frequency multiplication selection, internal pullup

VDD

8

Power

3.3-V power supply

GND

4

Ground

Ground

ORDERING INFORMATION

TA

PACKAGE

ORDERABLE PART NUMBER

TOP-SIDE MARKING

–40°C to 105°C

TSSOP

2000

CDCS503TPWRQ1

CS503Q

PACKAGE THERMAL RESISTANCE FOR TSSOP (PW) PACKAGE

over operating free-air temperature range (unless otherwise noted)

(1)

THERMAL AIRFLOW (CFM)

PW 8-PIN TSSOP

UNIT

0

150

250

500

High K

149

142

138

132

RθJA

°C/W

Low K

230

185

170

150

High K

65

RθJC

°C/W

Low K

69

(1)

The package thermal impedance is calculated in accordance with JESD 51 and JEDEC2S2P (high-k board).

THERMAL INFORMATION

CDCS503TPWRQ1

THERMAL METRIC(1)

UNIT

PW (8 PINS)

θJA

Junction-to-ambient thermal resistance

179.9

θJCtop

Junction-to-case (top) thermal resistance

64.9

θJB

Junction-to-board thermal resistance

108.7

°C/W

ψJT

Junction-to-top characterization parameter

9

ψJB

Junction-to-board characterization parameter

107

θJCbot

Junction-to-case (bottom) thermal resistance

n/a

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

Copyright © 2012, Texas Instruments Incorporated

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