DADD DDU7F-50MC3, DDU7F-50M, DDU7F-50B2, DDU7F-50A2, DDU7F-500MC3 Datasheet
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DDU7F
Doc #97016 DATA DELAY DEVICES, INC. 1
1/29/97 3 Mt. Prospect Ave. Clifton, NJ 07013
10-TAP, TTL-INTERFACED
FIXED DELAY LINE
(SERIES DDU7F)
FEATURES PACKAGES
• Ten equally spaced outputs
• Fits standard 14-pin DIP socket
• Low profile
• Auto-insertable
• Input & outputs fully TTL interfaced & buffered
• 10 T2L fan-out capability
FUNCTIONAL DESCRIPTION
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
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
10% 10% 10% 10%
VCC GNDIN T1 T2 T3 T4 T10
Functional diagram for dash numbers < 50
3.5ns 10% 10% 10% 10%
T5 T6 T7 T8
10%
T9
10% 10% 10% 10%
VCC GNDIN T1 T2 T3 T4 T10
Functional diagram for dash numbers >= 50
10% 10% 10% 10%
T5 T6 T7 T8
10%
T9
10%
1997 Data Delay Devices
data
delay
devices, inc.
3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IN
T2
T4
T6
T8
T10
N/C
GND
VCC
T1
T3
T5
T7
T9
N/C
N/C
14
13
12
11
10
9
8
1
2
3
4
5
6
7
IN
N/C
T2
T4
T6
T8
GND
VCC
T1
T3
T5
T7
T9
T10
DDU7F-xx DIP
DDU7F-xxA2 Gull-Wing
DDU7F-xxB2 J-Lead
DDU7F-xxM Military DIP
Military SMD
DDU7F-xxMC3
PIN DESCRIPTIONS
IN Signal Input
T1-T10 Tap Outputs
VCC +5 Volts
GND Ground
DASH NUMBER SPEC.’S
Part
Number
Total
Delay (ns)
Delay Per
Tap (ns)
DDU7F-10
9 ± 2.0 * 1.0 ± 0.5
DDU7F-20
18 ± 2.0 * 2.0 ± 1.0
DDU7F-25
22.5 ± 2.0 * 2.5 ± 1.0
DDU7F-50
50 ± 2.5 5.0 ± 2.0
DDU7F-100
100 ± 5.0 10.0 ± 3.0
DDU7F-150
150 ± 7.5 15.0 ± 3.0
DDU7F-200
200 ± 10.0 20.0 ± 3.0
DDU7F-250
250 ± 12.5 25.0 ± 3.0
DDU7F-300
300 ± 15.0 30.0 ± 3.0
DDU7F-400
400 ± 20.0 40.0 ± 4.0
DDU7F-500
500 ± 25.0 50.0 ± 5.0
* Total delay is referenced to first tap
Input to first tap = 3.5ns ±± 1ns
NOTE: Any dash number between 10 and
500 not shown is also available.
DDU7F
Doc #97016 DATA DELAY DEVICES, INC. 2
1/29/97 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU7F 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 20% of the total delay and periods as
small as 40% 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 DDU7F relies on a stable power supply to
produce repeatable delays within the stated
tolerances. A 0.1uf capacitor from VCC to GND,
located as close as possible to the VCC pin, is
recommended. A wide VCC 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 V
CC
-0.3 7.0 V
Input Pin Voltage V
IN
-0.3 VCC+0.3 V
Storage Temperature T
STRG
-55 150 C
Lead Temperature T
LEAD
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 V
OH
2.5 3.4 V VCC = MIN, IOH = MAX
VIH = MIN, VIL = MAX
Low Level Output Voltage V
OL
0.35 0.5 V VCC = MIN, IOL = MAX
VIH = MIN, VIL = MAX
High Level Output Current I
OH
-1.0 mA
Low Level Output Current I
OL
20.0 mA
High Level Input Voltage V
IH
2.0 V
Low Level Input Voltage V
IL
0.8 V
Input Clamp Voltage V
IK
-1.2 V VCC = MIN, II = I
IK
Input Current at Maximum
Input Voltage
I
IHH
0.1 mA VCC = MAX, VI = 7.0V
High Level Input Current I
IH
20
µA
VCC = MAX, VI = 2.7V
Low Level Input Current I
IL
-0.6 mA VCC = MAX, VI = 0.5V
Short-circuit Output Current I
OS
-60 -150 mA VCC = MAX
Output High Fan-out 25 Unit
Output Low Fan-out 12.5 Load
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