357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881

www.nelfc.com

TTL

HS-1520 Series

Description

The HS-1520 Series of quartz crystal oscillators provide enable/disable 3-state TTL compatible signals for

bus connected systems. Supplying Pin 1 of the HS-1520 units with a logic “1" enables its output on Pin 8.

In the disabled mode, Pin 8 presents a high impedance to the load. All units are resistance welded in an all

metal package, offering RFI shielding, and are designed to survive standard wave soldering operations

without damage. Insulated standoffs to enhance board cleaning are standard.

Features

• Wide frequency range– 0.5MHz to 85.0MHz

• User specified tolerance available

• Will withstand vapor phase temperatures of 253°C

for 4 minutes maximum

• Space-saving alternative to discrete component

oscillators

• High shock resistance, to 3000g

• All metal, resistance weld, hermetically sealed

package

• Low Jitter

• High Q Crystal actively tuned oscillator circuit

• Power supply decoupling internal

• No internal PLL avoids cascading PLL problems

• Low power consumption

• Gold plated leads - Solder dipped leads available

upon request

• RoHS Compliant, Lead Free Construction

(unless solder dipped leads are supplied)

Electrical Connection

Pin

Connection

1

Enable Input

7

Grd & Case

8

Output

14

V

CC

Dimensions are in inches and (MM)

CRYSTAL CLOCK OSCILLATORS

Data Sheet 9225A

Rev. U