SQUARE WAVE GENERATOR MODULES

ECLSWGM-XX

10K ECL Square Wave Generator Module

- ECL input and outputs
- Output wavetrain can be started in sync with random events
- 16-pin DIP package (.250 high)
- Available in frequencies from 2 Mhz to 100 Mhz
- Output frequencies controlled to within ±2%
- 70 ECL DC fan-out capacity

DESIGN NOTES

The "DIP Series" Square Wave Generator Modules developed by Engineered Components Company have been designed to provide an ECL level square wave output at frequencies from 2 Mhzto 100 Mhz. These generators are both keyable and synchronizable, producing a continuous output train as long as a zero (low) is maintained at the enable input. As long as the enable input is a "1" (high), the output will be a constant "1" (high). Whenever the enable input goes low, the output wavetrain will start in the same sequence with the first low appearing one-half cycle after trigger, and the first positive edge occurring after the period of one cycle. (Note: The output buffer will add one propagation delay to all times). This feature allows the initiation of a timing wavetrain with the origin in synchronization with another event.

These Square Wave Generator Modules are of hybrid construction utilizing the proven technologies of active integrated circuitry and of passive networks utilizing capacitive, inductive and resistive elements. The ICs utilized in these modules are burned-in to Level B of MI L-STD-883 to ensure a high MTBF. The MTBF on these modules, when calculated per MI L-HDBK-217 for a 50°C ground fixed environment, is in excess of 1.5 million hours.

The ECLSWGM is offered in thirty (30) frequencies. Output frequencies are controlled to within ±2% and have a temperature coefficient of less than +200 ppm/°C over the operating temperature range of - 30 to +85°C.

These "DIP Series" modules are packaged in a 16-pin DIP housing, molded of flame-proof Diallyl Phthalate per ASTM D 5948, Type SDG-F, and are fully encapsulated in epoxy resin. Flat metal leads meet the solderability requ i,rements of MI L-STD-202, Method 208. Leads provide positive stand off from the printed circuit board to permit solder-fillet formation and flush cleaning of solder-flux residues for improved reliability.

Marking consists of manufacturer's name, logo (EC²), part number, terminal identification and date code of manufacture. All marking is applied by silk screen process using white epoxy paint in accordance with MIL-STD-130, to meet the permanency of identification required by MIL-STD-202, Method 215.

TEST CONDITIONS

1. Al I measurements are made at 25°C.
2. Vee supply voltage is maintained at - 5.2V DC.
3. All units are tested using a standard open emitter ECL10,000 gate at the input. The input and output utilizes a 100 ohm pulldown resistor to - 2V; the output is also loaded with one ECL 10,000 gate.

OPERATING SPECIFICATIONS

*Supply Voltage ................. -5.2 ±5% to Vee 
     (Can be operated on +5V to Vee)
Supply current: ................. 55ma typical

Logic 1 Input at 25°C:
     Voltage .................... -0.98 min.
     Current .................... 265ua max.
Logic 0 Input at 25°C:
     Voltage .................... -1.63 max.
     Current .................... 0.5ua min.
Logic 1 Output at 25°C .......... -.96 min.
Logic 0 Output at 25°C: ......... -1.65 max.
Operating temperature range: .... -30 to +85°C
Storage temperature: ............ -55 to +125°C

*Output frequency will increase or decrease less than 1% for a respective increase or decrease of 5% in supply voltage.

PART NUMBER TABLE

Special modules can be readily manufactured to improve accuracies and/or provide customer specified random frequencies for specific applications.