LOGIC DELAY MODULES
 SPFLDM-TTL-XX
SIP FAST
TTL Logic Delay Module
- T²L FAST input and outputs
- Delays stable and precise
- 8-pin SIP package (.400 high)
- Available in delays from 25 to 400ns
- 20% taps -- each isolated and with 10 T²L fan-out capacity
- Fast rise time on all outputs
DESIGN NOTES
The "SIP Series" Logic Delay Modules developed by Engineered Components Company have been designed to provide precise tapped delays with required driving and pick-off circuitry contained in an 8-pin SIP package compatible with FAST T²L circuits. These logic delay 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. Module design includes compensation for propagation delays and incorporates internal termination at the output; no additional external components are needed to obtain the desired delay.
The SPFLDM-TTL is offered in 25 delays from 25ns to 400ns with each module incorporating taps at 20% increments of total delay. Delay tolerances are maintained as shown in the accompanying part number table, when tested under the "Test Conditions" shown. Delay time is measured at the +1.5V level on the leading edge. Rise time for all modules is 4ns maximum when measured from 0.75V to 2.4V. Temperature coefficient of delay is approximately +500 ppm/°C over the operating temperature range of 0 to +70°C.
These modules accept either logic "1" or logic "0" inputs and reproduce the logic at the selected output tap without inversion. The delay modules are intended primarily for use with positive going pulses and are calibrated to the tolerances shown in the table on rising edge delay; where best accuracy is desired in applications using falling edge timing, it is recommended that a special unit be calibrated for the specific application. Each module has the capability of driving up to 20 T²L loads with a maximum of 10 loads on any one tap.
These "SIP Series"
modules are packaged in an 8-pin SIP 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 requirements of MIL-STD-202, Method
208.
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. Vcc supply voltage is maintained at 5.0V DC.
3. All units are tested using a FAST T²L toggle-type positive input pulse and one FAST T²L load at the output being tested.
4. Input pulse width used is 5 to 10ns longer than full delay of module under test; spacing between pulses (falling edge to rising edge) is three times the pulse width used.
OPERATING SPECIFICATIONS
*Vcc supply voltage: ........... 4.75 to 5.25V DC
Vcc supply current:
Constant "0" in ............. 40mA typical
Constant "1" in ............. 7mA typical
Logic 1 Input:
Voltage ..................... 2V min.; Vcc max.
Current ..................... 2.7V = 20uA max.
5.5V = 1mA max.
Logic 0 Input:
Voltage ..................... 0.8V max.
Current ..................... -.6mA max.
Logic 1 Voltage out: ........... 2.7V min.
Logic 0 Voltage out: ........... 0.5V max.
Operating temperature range: ... 0 to 70°C
Storage temperature: ........... -55 to +125°C.
|
*Delays increase or decrease approximately 2% for a respective increase or decrease of 5% in supply voltage.
PART NUMBER TABLE
ø
DELAYS AND TOLERANCES (in
ns)
| Part Number |
Tap 1 |
Tap2 |
Tap3 |
Tap4 |
Output |
SPFLDM-TTL-25
SPFLDM-TTL-30
SPFLDM-TTL-35
SPFLDM-TTL-40
SPFLDM-TTL-45
SPFLDM-TTL-50
SPFLDM-TTL-55
SPFLDM-TTL-60
SPFLDM-TTL-65
SPFLDM-TTL-70
SPFLDM-TTL-75
SPFLDM-TTL-80
SPFLDM-TTL-85
SPFLDM-TTL-90
SPFLDM-TTL-95
SPFLDM-TTL-100
SPFLDM-TTL-125
SPFLDM-TTL-150
SPFLDM-TTL-175
SPFLDM-TTL-200
SPFLDM-TTL-225
SPFLDM-TTL-250
SPFLDM-TTL-300
SPFLDM-TTL-350
SPFLDM-TTL-400 |
5 ±1
6 ±1
7 ±1
8 ±1
9 ±1
10 ±1
11 ±1
12 ±1
13 ±1
14 ±1
15 ±1
16 ±1
17 ±1
18 ±1
19 ±1
20 ±1
25 ±1
30 ±1.5
35 ±1.5
40 ±1.5
45 ±2
50 ±2
60 ±2
70 ±2
80 ±3 |
10 ±1
12 ±1
14 ±1
16 ±1
18 ±1
20 ±1
22 ±1
24 ±1
26 ±1.5
28 ±1.5
30 ±1.5
32 ±1.5
34 ±1.5
36 ±1.5
38 ±1.5
40 ±1.5
50 ±2
60 ±2
70 ±2.5
80 ±2.5
90 ±3
100 ±3
120 ±4
140 ±4.5
160 ±5 |
15 ±1
18 ±1
21 ±1
24 ±1.5
27 ±1
30 ±1
33 ±1.5
36 ±1.5
39 ±1.5
42 ±2
45 ±2
48 ±2
51 ±2
54 ±2
57 ±2
60 ±2
75 ±2.5
90 ±3
105 ±4
120 ±4
135 ±4
150 ±4.5
180 ±5
210 ±7
240 ±7 |
20 ±1
24 ±1
28 ±1.5
32 ±1.5
36 ±1.5
40 ±2
44 ±2
48 ±2
52 ±2
56 ±2
60 ±2.5
64 ±2.5
68 ±2.5
72 ±2.5
76 ±2.5
80 ±3
100 ±3
120 ±4
140 ±5
160 ±5
180 ±6
200 ±6
240 ±7
280 ±9
320 ±10 |
25 ±1
30 ±1
35 ±1.5
40 ±1.5
45 ±2
50 ±2
55 ±2
60 ±2
65 ±2.5
70 ±2.5
75 ±2.5
80 ±3
85 ±3
90 ±3
95 ±3
100 ±3
125 ±7
150 ±5
175 ±5
200 ±6
225 ±7
250 ±8
300 ±9
350 ±11
400 ±12 |
All modules can be operated
with a minimum input pulse width of 40% of full delay and
pulse period approaching square wave; since delay accuracies
may be somewhat degraded, it is suggested that the module
be evaluated under the intended specific operating conditions.
Special modules
can be readily manufactured to improve accuracies and/or
provide customer specified random delay times for specific
applications.
| 
