DDU12H
5-TAP, ECL-INTERFACED FIXED DELAY LINE (SERIES DDU12H)
data 3 ® delay
devices, inc.
FEATURES |
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PACKAGES |
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∙ Ten equally spaced outputs |
GND |
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1 |
32 |
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GND |
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31 |
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T1 |
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GND |
1 |
24 |
GND |
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∙ Fits in 300 mil 32-pin DIP socket |
T2 |
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3 |
30 |
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T3 |
T4 |
3 |
22 |
T3 |
T4 |
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4 |
29 |
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T5 |
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∙ Input & outputs fully 10KH-ECL interfaced & buffered |
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T2 |
2 |
23 |
T1 |
IN |
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5 |
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IN |
4 |
21 |
T5 |
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N/C |
5 |
20 |
N/C |
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VEE |
6 |
19 |
N/C |
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GND |
7 |
18 |
GND |
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VEE |
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8 |
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N/C |
8 |
17 |
N/C |
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GND |
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9 |
24 |
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GND |
N/C |
9 |
16 |
N/C |
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T7 |
10 |
15 |
T6 |
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23 |
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T6 |
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T8 |
11 |
14 |
T8 |
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T2 |
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11 |
22 |
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T8 |
VEE |
12 |
13 |
T10 |
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T4 |
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12 |
21 |
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T10 |
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DDU12H-xx DIP |
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DDU12H-xxC3 |
SMD |
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DDU12H-xxM Military DIP |
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DDU12H-xxMC3 Mil SMD |
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VEE |
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16 |
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FUNCTIONAL DESCRIPTION |
PIN DESCRIPTIONS |
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The DDU12H-series device is a 10-tap digitally buffered delay line. The |
IN |
Signal Input |
signal input (IN) is reproduced at the outputs (T1-T10), shifted in time by |
T1-T10 |
Tap Outputs |
an amount determined by the device dash number (See Table). For dash |
VEE |
-5 Volts |
numbers less than 20, the total delay of the line is measured from T1 to |
GND |
Ground |
T10. The nominal tap-to-tap delay increment is given by one-ninth of the |
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total delay, and the inherent delay from IN to T1 is nominally 1.5ns. For dash numbers greater than or equal to 20, the total delay of the line is measured from IN to T10. The nominal tap-to-tap delay increment is given by one-tenth of this number.
SERIES SPECIFICATIONS
∙Minimum input pulse width: 10% of total delay
∙Output rise time: 2ns typical
∙Supply voltage: -5VDC ± 5%
∙Power dissipation: 400mw typical (no load)
∙Operating temperature: -30° to 85° C
∙Temp. coefficient of total delay: 100 PPM/°C
1.5ns 10% 10% 10% 10% 10% 10% 10% 10% 10%
VCC IN |
T1 |
T2 |
T3 |
T4 |
T5 |
T6 |
T7 |
T8 |
T9 T10 GND |
Functional diagram for dash numbers < 20
10% 10% 10% 10% 10% 10% 10% 10% 10% 10%
VCC IN T1 |
T2 |
T3 |
T4 |
T5 |
T6 |
T7 |
T8 |
T9 T10 GND |
Functional diagram for dash numbers >= 20
©1997 Data Delay Devices
DASH NUMBER SPECIFICATIONS
Part |
Total |
Delay Per |
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Number |
Delay (ns) |
Tap (ns) |
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DDU12H-10 |
9 ± 1.0 * |
1.0 ± 0.3 |
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DDU12H-20 |
20 |
± 2.0 |
2.0 ± 0.4 |
DDU12H-25 |
25 |
± 2.0 |
2.5 ± 0.4 |
DDU12H-40 |
40 |
± 2.0 |
4.0 ± 0.5 |
DDU12H-50 |
50 |
± 2.5 |
5.0 ± 1.0 |
DDU12H-75 |
75 |
± 4.0 |
7.5 ± 1.5 |
DDU12H-100 |
100 |
± 5.0 |
10.0 ± 2.0 |
DDU12H-150 |
150 |
± 7.5 |
15.0 ± 2.0 |
DDU12H-200 |
200 |
± 10.0 |
20.0 ± 2.0 |
DDU12H-250 |
250 |
± 12.5 |
25.0 ± 2.0 |
DDU12H-300 |
300 |
± 15.0 |
30.0 ± 2.0 |
DDU12H-400 |
400 |
± 20.0 |
40.0 ± 2.0 |
DDU12H-500 |
500 |
± 25.0 |
50.0 ± 2.5 |
DDU12H-750 |
750 |
± 37.5 |
75.0 ± 4.0 |
DDU12H-1000 |
1000 |
± 50.0 |
100.0 ± 5.0 |
DDU12H-1500 |
1500 |
± 75.0 |
150.0 ± 7.0 |
*Total delay is referenced to first tap output Input to first tap = 1.5ns ± 1ns
NOTE: Any dash number between 10 and 1500 not shown is also available.
Doc #97036 |
DATA DELAY DEVICES, INC. |
1 |
12/11/97 |
3 Mt. Prospect Ave. Clifton, NJ 07013 |
DDU12H
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU12H tolerances are guaranteed for input pulse widths and periods greater than those specified in the test conditions. Although the device will function properly for pulse widths as small as 10% of the total delay and periods as small as 20% of the total delay (for a symmetric input), the delays may deviate from their values at low frequency. However, for a given input condition, the deviation will be repeatable from pulse to pulse. Contact technical support at Data
Delay Devices if your application requires device testing at a specific input condition.
POWER SUPPLY BYPASSING
The DDU12H relies on a stable power supply to produce repeatable delays within the stated tolerances. A 0.1uf capacitor from VEE to GND, located as close as possible to the VEE pin, is recommended. A wide VEE trace and a clean ground plane should be used.
DEVICE SPECIFICATIONS
TABLE 1: ABSOLUTE MAXIMUM RATINGS
PARAMETER |
SYMBOL |
MIN |
MAX |
UNITS |
NOTES |
DC Supply Voltage |
VEE |
-7.0 |
0.3 |
V |
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Input Pin Voltage |
VIN |
VEE - 0.3 |
0.3 |
V |
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Storage Temperature |
TSTRG |
-55 |
150 |
C |
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Lead Temperature |
TLEAD |
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300 |
C |
10 sec |
TABLE 2: DC ELECTRICAL CHARACTERISTICS
(0C to 75C)
PARAMETER |
SYMBOL |
MIN |
TYP |
MAX |
UNITS |
NOTES |
High Level Output Voltage |
VOH |
-1.020 |
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-0.735 |
V |
VIH = MAX,50Ω to -2V |
Low Level Output Voltage |
VOL |
-1.950 |
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-1.600 |
V |
VIL = MIN, 50Ω to -2V |
High Level Input Voltage |
VIH |
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-1.070 |
V |
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Low Level Input Voltage |
VIL |
-1.480 |
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V |
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High Level Input Current |
IIH |
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475 |
μA |
VIH = MAX |
Low Level Input Current |
IIL |
0.5 |
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μA |
VIL = MIN |
Doc #97036 |
DATA DELAY DEVICES, INC. |
2 |
12/11/97 |
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com |