FREQUENCY MULTIPLIER MODULES

SSDQM-LCX-XXX

Space Saver LCX 3V Logic Doubler/Quadrupler Module

- T²L LV CMOS input and outputs
- Output wavetrains are synchronized to input square wave
- 8-pin Space Saver package
- Available with input frequencies from 2.0 to 20 MHz
- 24mA output drive capability
- Leads - thru-hole, J, Gull Wing or Tucked
- Provides output at 2 and 4 times input frequency

DESIGN NOTES

The LCX "Space Saver Series" Digital Doubler/Quadrupler Modules developed by Engineered Components Company have been designed to provide precise 3V wavetrain outputs at two times (2X) and four times (4X) the input frequency. The input square-wave, typically from a crystal oscillator, is multiplied by the SSDQM-LCX module giving 2X and 4X outputs.

Since the multiplication is accomplished by inserting timed edges, any variance in this timing will result in jitter on the output waveforms. The resulting timing jitter will be less than 2% of the nominal input period. Variance of timing with temperature is less than ±600 ppm/°C over the operating temperature range of -40 to +85°C.

The SSDQM-LCX is offered in twenty-five (25) standard clock input frequencies from 2.0 to 20.0 MHz. When tested under the "Test Conditions" shown, the output frequencies will be exact multiples of the input. Each output on these modules is capable of driving ±24mA.

These SSDQM-LCX Digital Doubler/Quadrupler Modules are of hybrid construction utilizing the proven technologies of active integrated circuitry and of passive networks utilizing capacitive, inductive and resistive elements. The MTBF on these modules, when calculated per MIL-HDBK-217 for a 50°C ground fixed environment, is in excess of 3.7 million hours.

The SSDQM-LCX "Space Saver Series" modules are packaged in an 8-pin housing, molded of flame-proof Diallyl Phthalate per ASTM D 5948, Type SDG-F, and are fully encapsulated in epoxy resin. Thru-hole, J, Gull Wing or Tucked Lead configurations are available on these modules (see Part Number Table note to specify). Leads meet the solderability requirements of MIL-STD-202, Method 208. Corner standoffs on the housing of the thru-hole version and lead design of the surface mount versions 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 25oC.
2. Vcc supply voltage is maintained at 3.3V DC.
3. All units are tested using a LCX gate providing the input wavetrain and one LCX load at each output.
4. Input is a square wave at the module's nominal frequency.

OPERATING SPECIFICATIONS

Vcc supply voltage:............ 2.7 to 3.6V DC  
Vcc  supply current:
SSDQM-LCX-2 ................... 14 mA typical
SSDQM-LCX-20 .................. 22 mA typical
(Current increases with operating frequency)
Logic 1 Input:
Voltage ....................... 2.0V min.; 5.5V max.
Current ....................... ±5µA max.
Logic 0 Input:
Voltage ....................... .8V max.
Current	....................... ±5µA max.
Logic1 Voltage out:	...........	2.2V min.
			@  Vcc 3.0 and IOH. -24mA
Logic 0 Voltage out: ..........	.55V max. 
			@  Vcc 3.0 and IOL. +24mA
Operating temperature range: ..	-40 to +85°C
Storage temperature: ..........	-55 to +125°C

PART NUMBER TABLE

Suffix Part Number with G (for Gull Wing Lead), J (for J Lead), F (for Thru-hole Lead) or T (for Tucked Lead).
Examples: SSDQM-LCX-4.77G (Gull Wing), SSDQM-LCX-12J (J Lead), SSDQM-LCX-2.0F (Thru-hole Lead) or SSDQM-LCX-14.32T (Tucked Lead).

Special modules can be readily manufactured to provide customer specified output frequencies for specific applications.