PULSE GENERATOR MODULES

DECLPGM-2-XX

100K ECL Dual Pulse Generator Module

- ECL 100K input and outputs
- Dual units with separate trigger inputs and outputs
- Pulse widths stable and precise
- 12-pin DIP package (.325 high)
- Available in pulse widths from 2 to 50ns
- Rise time 1ns nominal

DESIGN NOTES

The "DIP series" Dual Pulse Generator Modules developed by Engineered Components Company have been designed to provide precise output pulse widths when triggered by variable width inputs. All required driving and output circuitry, as well as timing components, are contained in a 12-pin DIP package compatible with ECL "100K Series" circuitry. These modules are compatible with ECL 100K circuits and require no external components in order to obtain the specified output pulse.

The DECLPGM is available in 20 pulse widths from 2 to 50ns. Each channel provides a stable ECL 100K output pulse of the specified width for each positive input step. It is necessary only that the input step be held positive for at least 2ns in order to obtain the desired output pulse. The duration of the positive input pulse, after this time, has no effect on output pulse width. No output pulse will occur on the negative input pulse transition.

Pulse width tolerance is maintained as shown in the accompanying Part Number Table, when tested under the "Test Conditions" shown. Pulse width is measured at the -1.3V level on both leading and trailing edge. Rise and fall times are less than 2ns, when measured from 20% to 80% of the pulse amplitude. Each output channel is capable of driving 70 ECL DC loads.

These 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 MIL-STD-883 to ensure a high MTBF. The MTBF on these modules, when calculated per MIL-HDBK-217 for a 50°C ground fixed environment, is in excess of one million hours.

These "DIP series" Pulse Generator Modules are packaged in a 12-pin DIP housing, molded of flame-proof Diallyl Phthalate per ASTM D 5948, Type SDG-F, and are fully encapsulated in epoxy resin. Leads meet the solderability requirements of MIL-STD-202, Method 208. Corner standoffs on the housing provide positive standoff 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. All measurements are made at 25°C.
2. Vee supply voltage is maintained at -4.5V DC.
3. All units are tested using a positive input pulse provided by a standard open emitter ECL 100K gate. The input and output utilize a 50 ohm pulldown resistor to -2V; the output is also loaded with one ECL 100K gate.
4. Input pulse width used is 2ns for all modules; repetition rate is in accordance with the data specified in the Part Number Table.

OPERATING SPECIFICATIONS

*Supply Voltage: ................ -4.5V ±5% to Vee 
Supply Current: ................. 155ma typical
Logic 1 Input at 25°C.
     Voltage .................... -1.165V min.
     Current .................... 350ua max. 
Logic 0 Input at 25°C.
     Voltage .................... -1.475V max
     Current .................... 0.5ua min. 
Logic 1 Output at 25°C .......... -1.025V min.
Logic 0 Output at 25°C .......... -1.620V max.
Operating temperature range: .... -0 to +85°C.
Storage temperature: ............ -55 to +125°C.

*Pulse width increases or decrreases approximately 1.5% 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 pulse widths for specific applications.