DDU7F
Ò
10-TAP, TTL-INTERFACED
FIXED DELAY LINE
(SERIES DDU7F)
data
delay
3
devices, inc.
FEATURES
PACKAGES
IN
N/C
T2
VCC
T1
1
2
3
4
5
6
7
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
T1
T3
T5
T7
T9
N/C
N/C
IN
T2
T4
T6
T8
T10
N/C
GND
·
·
·
·
·
·
Ten equally spaced outputs
Fits standard 14-pin DIP socket
Low profile
T3
T4
T5
Auto-insertable
T6
T7
Input & outputs fully TTL interfaced & buffered
T8
T9
10 T2L fan-out capability
GND
T10
8
DDU7F-xx
DIP
Military SMD
DDU7F-xxA2 Gull-Wing
DDU7F-xxB2 J-Lead
DDU7F-xxMC3
DDU7F-xxM Military DIP
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The DDU7F-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
IN
Signal Input
T1-T10 Tap Outputs
VCC +5 Volts
GND Ground
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.
DASH NUMBER SPEC.’S
SERIES SPECIFICATIONS
Part
Number
Total
Delay (ns)
9 ± 2.0 *
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
·
·
·
·
Minimum input pulse width: 20% of total delay
Output rise time: 2ns typical
Supply voltage: 5VDC ± 5%
Supply current: ICCL = 50ma typical
ICCH = 15ma typical
Operating temperature: 0° to 70° C
Temp. coefficient of total delay: 100 PPM/°C
DDU7F-10
DDU7F-20
DDU7F-25
DDU7F-50
DDU7F-100
DDU7F-150
DDU7F-200
DDU7F-250
DDU7F-300
DDU7F-400
DDU7F-500
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
·
·
3.5ns
10%
10%
10%
10%
10%
10%
10%
10%
10%
* Total delay is referenced to first tap
Input to first tap = 3.5ns ± 1ns
VCC IN
T1
T2
T3
T4
T5
T6
T7
T8
T9 T10 GND
Functional diagram for dash numbers < 50
NOTE: Any dash number between 10 and
500 not shown is also available.
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 >= 50
Ó1997 Data Delay Devices
Doc #97016
1/29/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1