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DDU222C |
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5-TAP, HCMOS-INTERFACED |
data |
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3 |
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FIXED DELAY LINE |
delay |
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(SERIES DDU222C) |
devices, inc. |
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FEATURES
∙Five equally spaced outputs
∙Very narrow device (SIP package)
∙Stackable for PC board economy
∙Input & outputs fully CMOS interfaced & buffered
∙10 T2L fan-out capability
PACKAGES
1 2 3 4 5 6 7 8
VCC IN T1 T2 T3 T4 T5 GND
DDU222F-xx Commercial
DDU222F-xxM Military
FUNCTIONAL DESCRIPTION |
PIN DESCRIPTIONS |
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The DDU222C-series device is a 5-tap digitally buffered delay line. The |
IN |
Signal Input |
signal input (IN) is reproduced at the outputs (T1-T5), shifted in time by an |
T1-T5 |
Tap Outputs |
amount given by the device dash number. For dash numbers less than |
VDD |
+5 Volts |
40, the total delay of the line is measured from T1 to T5, with the nominal |
GND |
Ground |
value given by the dash number. The nominal tap-to-tap delay increment |
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is given by 1/4 of this number. The inherent delay from IN to T1 is nominally 8.0ns. For dash numbers greater than or equal to 40, the total delay of the line is measured from IN to T5, with the nominal value given by the dash number. The nominal tap-to-tap delay increment is given by 1/5 of this number.
SERIES SPECIFICATIONS
∙Minimum input pulse width: 40% of total delay
∙Output rise time: 8ns typical
∙Supply voltage: 5VDC ± 5%
∙Supply current: ICCL = 40μa typical
ICCH = 10ma typical
∙Operating temperature: 0° to 70° C
∙Temp. coefficient of total delay: 300 PPM/°C
8.0ns 25% 25% 25% 25%
VCC IN |
T1 |
T2 |
T3 |
T4 |
T5 GND |
Functional diagram for dash numbers < 40
20% 20% 20% 20% 20%
VCC IN |
T1 |
T2 |
T3 |
T4 |
T5 GND |
Functional diagram for dash numbers >= 40
DASH NUMBER SPECIFICATIONS
Part |
Total |
Delay Per |
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Number |
Delay (ns) |
Tap (ns) |
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DDU222C-10 |
10 ± 2.0 * |
2.5 ± 1.0 |
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DDU222C-20 |
20 ± 2.0 * |
5.0 ± 2.0 |
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DDU222C-50 |
50 |
± 3.0 |
10.0 ± 3.0 |
DDU222C-60 |
60 |
± 3.0 |
12.0 ± 3.0 |
DDU222C-75 |
75 |
± 4.0 |
15.0 ± 3.0 |
DDU222C-100 |
100 ± 5.0 |
20.0 ± 3.0 |
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DDU222C-125 |
125 ± 6.5 |
25.0 ± 3.0 |
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DDU222C-150 |
150 ± 7.5 |
30.0 ± 3.0 |
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DDU222C-175 |
175 ± 8.0 |
35.0 ± 4.0 |
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DDU222C-200 |
200 |
± 10.0 |
40.0 ± 4.0 |
DDU222C-250 |
250 |
± 12.5 |
50.0 ± 5.0 |
*Total delay is referenced to first tap output Input to first tap = 8.0ns ± 2ns
NOTE: Any dash number between 10 and 250 not shown is also available.
©1997 Data Delay Devices
Doc #97014 |
DATA DELAY DEVICES, INC. |
1 |
1/28/97 |
3 Mt. Prospect Ave. Clifton, NJ 07013 |
DDU222C
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU222C 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 40% of the total delay and periods as small as 80% 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 DDU222C relies on a stable power supply to produce repeatable delays within the stated tolerances. A 0.1uf capacitor from VDD to GND, located as close as possible to the VDD pin, is recommended. A wide VDD 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 |
VDD |
-0.3 |
7.0 |
V |
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Input Pin Voltage |
VIN |
-0.3 |
VDD+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 70C, 4.75V to 5.25V)
PARAMETER |
SYMBOL |
MIN |
TYP |
MAX |
UNITS |
NOTES |
High Level Output Voltage |
VOH |
3.98 |
4.4 |
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V |
VDD = 5.0, IOH = MAX |
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VIH = MIN, VIL = MAX |
Low Level Output Voltage |
VOL |
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0.15 |
0.26 |
V |
VDD = 5.0, IOL = MAX |
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VIH = MIN, VIL = MAX |
High Level Output Current |
IOH |
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-4.0 |
mA |
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Low Level Output Current |
IOL |
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4.0 |
mA |
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High Level Input Voltage |
VIH |
3.15 |
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V |
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Low Level Input Voltage |
VIL |
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1.35 |
V |
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Input Current |
IIH |
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0.10 |
μA |
VDD = 5.0 |
Doc #97014 |
DATA DELAY DEVICES, INC. |
2 |
1/28/97 |
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com |