# HS-A1420 Series Crystal Clock Oscillators

## Description

· Quartz crystal oscillators for bus-connected systems.
· Enable/disable 3-state CMOS compatible signals.
· Output enabled with logic "1" or open input.
· High impedance output in disabled mode.
· All metal package with RFI shielding, resistance welded.
· Designed for wave soldering.
· Insulated standoffs for board cleaning.

## Features

· Frequency Range: 40.1MHz - 70.0MHz
· User-specified tolerance available.
· Withstands vapor phase temperatures up to 253°C.
· Space-saving alternative to discrete oscillators.
· High shock resistance (up to 3000g).
· 3.3V operation.
· Low Jitter
· High Q crystal, actively tuned oscillator circuit.
· Power supply decoupling internal.
· No internal PLL.
· Low power consumption.
· RoHS Compliant (unless solder dipped leads are supplied).
· COTS/Dual use.



## Electrical Connection

· Pin 1: Enable Input
· Pin 7: Ground & Case
· Pin 8: Output
· Pin 14: V DD



## Electrical Characteristics (Highlights)

· Frequency: 40.1MHz - 70.0MHz
· Duty Cycle: 45/55% - 55/45% @ VDD/2
· Logic 0 V (OL): 0.2V @ 600µA
· Logic 1 V (OH): VDD – 0.2V
· Rise/Fall Time: 8ns
· Enable/Disable Logic High Voltage: 2.0V
· Enable/Disable Logic Low Voltage: 0.8V
· Jitter, RMS (12kHz-20MHz): 0.1 ps
· Frequency Stability: ±100ppm



## General Characteristics (Highlights)

· Supply Voltage (VDD): 3.135V - 3.465V
· Supply Current (IDD): up to 40mA
· Operating Temperature: 0°C - 70°C
· Storage Temperature: -55°C - 125°C



## Environmental and Mechanical Characteristics

· Meets MIL-STD shock and vibration requirements
· Soldering Condition: 300°C for 10 seconds
· Hermetic Seal: Leak rate less than 1 x 10 [-8] atm.cc/sec