DDU7C
Ò
10-TAP, TTL-INTERFACED
FIXED DELAY LINE
(SERIES DDU7C)
data
delay
3
devices, inc.
FEATURES
PACKAGES
IN
T2
VDD
T1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IN
N/C
T2
VDD
T1
1
2
3
4
5
6
7
14
13
12
11
10
9
·
·
·
·
·
·
Ten equally spaced outputs
Fits standard 16-pin DIP socket
Low profile
T4
T3
T3
T6
T5
T4
T5
T8
T7
Auto-insertable
T6
T7
T10
N/C
GND
T9
Input & outputs fully CMOS interfaced & buffered
T8
T9
N/C
N/C
10 T2L fan-out capability
GND
T10
8
DDU7C-xx
DDU7C-xxA3
DDU7C-xxB3
DIP
Gull-Wing
J-Lead
Military DIP
DDU7C-xxM
DDU7F-xxMC3 Military SMD
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The DDU7C-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
VDD +5 Volts
GND Ground
nominal value given by 9 times the increment. The inherent delay from IN to T1 is nominally 8.0ns. 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 Per
Tap (ns)
2.5 ± 1.0
10.0 ± 2.0
15.0 ± 2.0
20.0 ± 2.0
25.0 ± 2.0
30.0 ± 3.0
40.0 ± 4.0
50.0 ± 5.0
·
·
·
·
Minimum input pulse width: 20% of total delay
Output rise time: 8ns typical
Supply voltage: 5VDC ± 5%
Supply current: ICCL = 40ma typical
ICCH = 10ma typical
Operating temperature: 0° to 70° C
Temp. coefficient of total delay: 300 PPM/°C
Delay (ns)
22.5 ± 2.0 *
100 ± 5.0
150 ± 7.5
200 ± 10.0
250 ± 12.5
300 ± 15.0
400 ± 20.0
500 ± 25.0
DDU7C-25
DDU7C-100
DDU7C-150
DDU7C-200
DDU7C-250
DDU7C-300
DDU7C-400
DDU7C-500
·
·
3.5ns
10%
10%
10%
10%
10%
10%
10%
10%
10%
* Total delay is referenced to first tap
Input to first tap = 8.0ns ± 2ns
NOTE: Any dash number between 25 and
500 not shown is also available.
VCC IN
T1
T2
T3
T4
T5
T6
T7
T8
T9 T10 GND
Functional diagram for dash numbers < 50
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 #97019
1/30/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1