COMPATIBLE
design notes
The "Space Saver Series" Gated Square Wave Generator modules
developed by Engineered Components Company have been de-
signed 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), OUT1 will be a constant "1" (high) and OUT2 will be a
constant "0" (low). Whenever the enable input goes low, OUT2 goes
high immediately. OUT1 and OUT2 go low together after a one-half
cycle delay and, thereafter run in phase. When enable input returns
to high, OUT2 is forced low immediately and OUT1 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
•
•
•
•
•
•
•
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
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
o
C ground fixed environ-
ment, 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/
o
C over the operating temperature range of 0 to +70
o
C.
These "Space Saver Series" modules are packaged in an
8-pin housing, molded of flame-proof Diallyl Phthalate per MIL-
M-14, 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 perma-
nency of identification required by MIL-STD-202, Method 215.
BLOCK DIAGRAM IS SHOWN BELOW
TEST CONDITIONS
1. All measurements are made at 25
o
C.
2. V
cc
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
*
V
cc
supply voltage:
............
4.75 to 5.25V DC
MECHANICAL DETAIL IS SHOWN BELOW
V
cc
supply current:
SSFGSWG-TTL-2
. . . . . . . . . . .
10mA typical
SSFGSWG-TTL-100
. . . . . . . . . .
60mA typical
(Current increases with operating frequency)
Logic 1 Input:
Voltage
. . . . . . . . . . . . . . . . .
2V min.; V
cc
max.
Current
. . . . . . . . . . . . . . . . .
2.7V = 20uA max.
@ max. V in = 100uA max.
Logic 0 Input:
Voltage
. . . . . . . . . . . . . . . . .
.8V max.
2mA max.
Current
. . . . . . . . . . . . . . . . .
Logic 1 Voltage out:
. . . . . . . . . . .
Logic 0 Voltage out:
. . . . . . . . . . .
Operating temperature range:
. . . . . .
Storage temperature:
. . . . . . . . . . .
¯
2.5V min.
.5V max.
0 to +70
o
C.
55 to +125
o
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
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
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
PART NUMBER
OUTPUT
FREQUENCY
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 accura-
cies and/or provide customer specified non-standard frequencies
for specific applications.
Catalog No. C/011593R
嵌入式系统
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