Advance Information

HIGH TEMPERATURE CRYSTAL

CLOCK GENERATOR

HTCCG

• Down-Hole Oil Well

• Avionics

• Turbine Engine Control

• Industrial Process Control

• Nuclear Reactor

• Electric Power Conversion

• Heavy Duty Internal Combustion Engines

• Specified Over -55 to +225

°C

• CMOS/TTL Compatible

• Output Frequencies of 24 KHz–20 MHz

• Divide by 2, 4, 8

• Single 5V Supply

• Hermetic 14-Pin Ceramic DIP

• Interfaces With External Crystal

FEATURES

APPLICATIONS

GENERAL DESCRIPTION

Solid State Electronics Center • 12001 State Highway 55, Plymouth, MN 55441 • (800) 323-8295 • http://www.ssec.honeywell.com

The HTCCG is a high temperature clock oscillator fabri-

cated in Honeywell’s HTMOS™ high temperature process.

The chip contains a crystal controlled oscillator driver,

divider chain, low voltage monitor, and enable and reset

lines. Using an external crystal, it is intended to provide

reliable precision performance throughout the -55 to

+225

°C temperature band. All parts are burned in at 250°C

to eliminate infant mortality. Typically, parts will operate up

to +300

°C for a year, with derated performance.

The HTCCG operates from input crystal frequencies of

48KHz to 40MHz. The base frequency output ranges from

24KHz to 20Mhz, with divide by two, four, and eight fre-

quency outputs also provided. An Enable pin is included for

extremely low power applications, and a Reset pin for

prototyping purposes. The crystal driver may be bypassed

for applications requiring only a precision divider chain.

PACKAGE PINOUT

1

2

3

4

5

6

7

14

13

12

11

10

9

8

RESET IN

ExtClkEn

X2

X1

VSS

VDD

Enable

14-Lead Cerdip

Not Used

ExtClkIn

NRESET OUT