DDU7C
Doc #97019 DATA DELAY DEVICES, INC. 1
1/30/97 3 Mt. Prospect Ave. Clifton, NJ 07013
10-TAP, TTL-INTERFACED
FIXED DELAY LINE
(SERIES DDU7C)
FEATURES PACKAGES
• Ten equally spaced outputs
• Fits standard 16-pin DIP socket
• Low profile
• Auto-insertable
• Input & outputs fully CMOS interfaced & buffered
• 10 T2L fan-out capability
FUNCTIONAL DESCRIPTION
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
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.
SERIES SPECIFICATIONS
• Minimum input pulse width: 20% 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
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
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
IN
T2
T4
T6
T8
T10
N/C
GND
VDD
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
VDD
T1
T3
T5
T7
T9
T10
DDU7C-xx DIP
DDU7C-xxA3 Gull-Wing
DDU7C-xxB3 J-Lead
DDU7F-xxMC3 Military SMD
Military DIP
DDU7C-xxM
PIN DESCRIPTIONS
IN Signal Input
T1-T10 Tap Outputs
VDD +5 Volts
GND Ground
DASH NUMBER SPEC.’S
Part
Number Total
Delay (ns) Delay Per
Tap (ns)
DDU7C-25 22.5 ± 2.0 * 2.5 ± 1.0
DDU7C-100 100 ± 5.0 10.0 ± 2.0
DDU7C-150 150 ± 7.5 15.0 ± 2.0
DDU7C-200 200 ± 10.0 20.0 ± 2.0
DDU7C-250 250 ± 12.5 25.0 ± 2.0
DDU7C-300 300 ± 15.0 30.0 ± 3.0
DDU7C-400 400 ± 20.0 40.0 ± 4.0
DDU7C-500 500 ± 25.0 50.0 ± 5.0
* 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.
DDU7C
Doc #97019 DATA DELAY DEVICES, INC. 2
1/30/97 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU7C 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 DDU7C 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 VCC -0.3 7.0 V
Input Pin Voltage VIN -0.3 VDD+0.3 V
Storage Temperature TSTRG -55 150 C
Lead Temperature TLEAD 300 C10 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 V VDD = 5.0, IOH = MAX
VIH = MIN, VIL = MAX
Low Level Output Voltage VOL 0.15 0.26 V VDD = 5.0, IOL = MAX
VIH = MIN, VIL = MAX
High Level Output Current IOH -4.0 mA
Low Level Output Current IOL 4.0 mA
High Level Input Voltage VIH 3.15 V
Low Level Input Voltage VIL 1.35 V
Input Current IIH 0.10 µAVDD = 5.0
DDU7C
Doc #97019 DATA DELAY DEVICES, INC. 3
1/30/97 3 Mt. Prospect Ave. Clifton, NJ 07013
PACKAGE DIMENSIONS
DDU7C-xx (Commercial DIP)
.900 MAX.
12345678
16 15 14 13 12 11 10 9
.290
MAX.
.015 TYP.
.070 MAX.
.018
TYP. .700±.010
7 Equal spaces
each .100±.010
Non-Accumulative
.280
MAX.
.350
MAX.
.010±.002
Lead Material:
Nickel-Iron alloy 42
TIN PLATE
DDU7C-xxM (Military DIP)
.195
±.010
.830 MAX.
1234567
8
.290
MAX.
.020
TYP.
.440
MAX.
.300
TYP.
.010 TYP.
.600
TYP.
.030
±.005
91011121314
DDU7C-xxA3 (Commercial Gull-Wing)
.790 MAX.
.430
TYP.
.020 TYP.
.040
TYP.
.600
.300
MAX.
.270
TYP.
.010 TYP.
.050
TYP.
12345678
910111213141516
DDU7C-xxB3 (Commercial J-Lead)
.890 MAX.
12345678
.320
TYP.
.020 TYP.
.040
TYP.
.350
MAX.
.270
TYP.
.050 TYP.
.110
TYP.
910111213141516
.880±.020
.882
±.005
.020 TYP.
.040
TYP.
.280
MAX.
.590
MAX.
.010±.002
.050
±.010
.710
±.005 .007
±.005
12345678
910111213141516
DDU7C-xxMC3 (Military Gull-Wing)
DDU7C
Doc #97019 DATA DELAY DEVICES, INC. 4
1/30/97 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
DELAY LINE AUTOMATED TESTING
TEST CONDITIONS
INPUT: OUTPUT:
Ambient Temperature: 25oC ± 3oCLoad: 1 FAST-TTL Gate
Supply Voltage (Vcc): 5.0V ± 0.1V Cload:5pf ± 10%
Input Pulse: High = 5.0V ± 0.1V Threshold: 2.5V (Rising & Falling)
Low = 0.0V ± 0.1V
Source Impedance: 50Ω Max.
Rise/Fall Time: 5.0 ns Max. (measured
between 0.5V and 4.5V )
Pulse Width: PWIN = 1.5 x Total Delay
Period: PERIN = 10 x Total Delay
NOTE: The above conditions are for test only and do not in any way restrict the operation of the device.
T1
OUT
TRIG
IN
REF
TRIG
Test Setup
DEVICE UNDER
TEST (DUT)
TIME INTERVAL
COUNTER
PULSE
GENERATOR
COMPUTER
SYSTEM
PRINTER
IN
T2
T3
T4
T5
T6
T7
T8
T9
T10
0.5V
0.5V
Timing Diagram For Testing
TRISE TFALL
PERIN
PWIN
TRISE TFALL
2.5V
2.5V
4.5V
4.5V
2.5V
2.5V
VIH VIL
VOH VOL
INPUT
SIGNAL
OUTPUT
SIGNAL