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SSFGSWG-TTL-XXX
Space Saver FAST TTL Gated Square Wave
Generator
- T²L input and outputs
- Output wavetrain can be started in sync with random events
- 8-pin Space Saver package
- Leads - thru-hole, J, Gull Wing or Tucked
- Available in frequencies from 2 MHz to 100 MHz
- Output frequencies controlled to within
±2%
- 10 Schottky T²L fan-out capacity
DESIGN NOTES
The "Space Saver Series" Gated Square Wave Generator modules developed by
Engineered Components Company have been designed to provide a T²L level square
wave output at frequencies from 2 MHz to 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), OUT
1
will be
a constant "1" (high) and OUT
2
will be a constant "0" (low). Whenever the enable input
[Top]
goes low, OUT
2
goes high immediately. OUT
1
and OUT
2
go low together after a one-half
cycle delay and, thereafter run in phase. When enable input returns to high, OUT
2
is
forced low immediately and OUT
1
is forced high one-half cycle later. (Note: The output
buffers will add one propagation delay to all times).
These Gated 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 MTBF on these modules, when
calculated per MIL-HDBK-217 for a 50°C ground fixed environment, is in excess of 3
million hours.
The SSFGSWG-TTL is offered in 30 different frequencies from 2 MHz to 100 MHz.
Output frequencies are controlled to within ±2% and have a temperature coefficient of
less than -500 ppm/°C over the operating temperature range of 0 to +70°C.
These "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 lead 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.
Made in U.S.A.
TEST CONDITIONS
1. All measurements are made at 25°C.
2. Vcc supply voltage is maintained at 5.0V DC.
3. All units are tested using a Schottky toggle-type gate driving the input and one
Schottky T²L load at the output.
OPERATING SPECIFICATIONS
*Vcc supply voltage: ............ 4.75
Vcc supply current:
SSFGSWG-TTL-2 .............. 10mA
SSFGSWG-TTL-100............. 60mA
(Current increases with operating
Logic 1 Input:
Voltage ....................
Current ....................
@ max.
Logic 0 Input:
Voltage ....................
Current ....................
Logic 1 Voltage out: ............
Logic 0 Voltage out: ............
Operating temperature range: ....
Storage temperature: ............
to 5.25V DC
typical
typical
frequency)
2V min.; Vcc max.
2.7V = 20uA max.
V in = 100uA max.
0.8V max.
-2mA max.
2.5V min.
0.5V max.
0 to +70°C.
-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
*Suffix Part Number with G (for Gull Wing Lead), J (for J Lead), F (for Thru-hole Lead) or
T (for Tucked Lead).
Examples: SSFGSWG-TTL-10G (Gull Wing), SSFGSWG-TTL-25J (J Lead),
SSFGSWG-TTL-70F (Thru-hole Lead) or SSFGSWG-TTL-12T (Tucked Lead).
Part Number
SSFGSWG-TTL-2
SSFGSWG-TTL-2.5
SSFGSWG-TTL-3
SSFGSWG-TTL-3.5
SSFGSWG-TTL-4
SSFGSWG-TTL-4.5
SSFGSWG-TTL-5
SSFGSWG-TTL-5.5
SSFGSWG-TTL-6
SSFGSWG-TTL-7
SSFGSWG-TTL-8
SSFGSWG-TTL-9
SSFGSWG-TTL-10
SSFGSWG-TTL-11
SSFGSWG-TTL-12
SSFGSWG-TTL-13
SSFGSWG-TTL-14
SSFGSWG-TTL-15
SSFGSWG-TTL-20
SSFGSWG-TTL-25
SSFGSWG-TTL-30
SSFGSWG-TTL-35
SSFGSWG-TTL-40
SSFGSWG-TTL-45
SSFGSWG-TTL-50
SSFGSWG-TTL-60
SSFGSWG-TTL-70
SSFGSWG-TTL-80
SSFGSWG-TTL-90
SSFGSWG-TTL-100
Output Frequency
2.0 MHz
2.5 MHz
3.0 MHz
3.5 MHz
4.0 MHz
4.5 MHz
5.0 MHz
5.5 MHz
6.0 MHz
7.0 MHz
8.0 MHz
9.0 MHz
10.0 MHz
11.0 MHz
12.0 MHz
13.0 MHz
14.0 MHz
15.0 MHz
20.0 MHz
25.0 MHz
30.0 MHz
35.0 MHz
40.0 MHz
45.0 MHz
50.0 MHz
60.0 MHz
70.0 MHz
80.0 MHz
90.0 MHz
100.0 MHz
Special modules can be readily manufactured to improve accuracies and/or provide
customer specified non-standard frequencies for specific applications.
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