DDU224F
Doc #97015
1/29/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1
10-TAP, TTL-INTERFACED
FIXED DELAY LINE
(SERIES DDU224F)
FEATURES
PACKAGES
Ten equally spaced outputs
Very narrow device (SIP package)
Stackable for PC board economy
Input & outputs fully TTL interfaced & buffered
10 T
2
L fan-out capability
FUNCTIONAL DESCRIPTION
The DDU224F-series device is a 10-tap digitally buffered delay line. The
signal input (IN) is reproduced at the outputs (T1-T10), shifted in time by
an amount determined by the device dash number. The nominal tap-to-
tap delay increment is given by 1/10 of the dash number. For dash
numbers less than 50, the total delay of the line is measured from T1 to
T10, with the nominal value given by 9 times the increment. The inherent delay from IN to T1 is nominally
3.5ns. For dash numbers greater than or equal to 50, the total delay of the line is measured from IN to
T10, with the nominal value given by the dash number.
SERIES SPECIFICATIONS
Minimum input pulse width:
20% of total delay
Output rise time:
2ns typical
Supply voltage:
5VDC
±
5%
Supply current:
I
CCL
= 50ma typical
I
CCH
= 15ma typical
Operating temperature:
0
°
to 70
°
C
Temp. coefficient of total delay:
100 PPM/
°
C
1997 Data Delay Devices
data
delay
devices,
inc.
3
2 3 4 5 6 7 8
1
VCC
IN T1 T2 T3 T4 T5
GND
T6 T7 T8 T9 T10
N/C
9 10 11 12 13 14
DDU224F-xx Commercial
DDU224F-xxM
Military
PIN DESCRIPTIONS
IN
T1-T10 Tap Outputs
VCC
+5 Volts
GND
Ground
Signal Input
DASH NUMBER SPECIFICATIONS
Part
Number
DDU224F-10
DDU224F-20
DDU224F-25
DDU224F-50
DDU224F-100
DDU224F-150
DDU224F-200
DDU224F-250
DDU224F-300
DDU224F-400
DDU224F-500
Total
Delay (ns)
9
±
2.0 *
18
±
2.0 *
22.5
±
2.0 *
50
±
2.5
100
±
5.0
150
±
7.5
200
±
10.0
250
±
12.5
300
±
15.0
400
±
20.0
500
±
25.0
Delay Per
Tap (ns)
1.0
±
0.5
2.0
±
1.0
2.5
±
1.0
5.0
±
2.0
10.0
±
3.0
15.0
±
3.0
20.0
±
3.0
25.0
±
3.0
30.0
±
3.0
40.0
±
4.0
50.0
±
5.0
* Total delay is referenced to first tap output
Input to first tap = 3.5ns
±
1ns
NOTE: Any dash number between 10 and 500 not
shown is also available.