Doc #00115 DATA DELAY DEVICES, INC. 1
5/19/00 3 Mt. Prospect Ave. Clifton, NJ 07013
5-TAP, 3.3V CMOS-INTERFACED
FIXED DELAY LINE
(SERIES DDU8C3)
FEATURES PACKAGES
• Five equally spaced outputs
• Fits standard 8-pin DIP socket
• Low profile
• Auto-insertable
• Input & outputs fully CMOS interfaced & buffered
• 10 T2L fan-out capability
FUNCTIONAL DESCRIPTION
The DDU8C3-series device is a 5-tap digitally buffered delay line. The
signal input (IN) is reproduced at the outputs (T1-T5), shifted in time by an
amount determined by the device dash number (See Table). For dash
numbers 5020 and above, the total delay of the line is measured from IN to
T5, and the nominal tap-to-tap delay increment is given by one-fifth of the
total delay. For dash numbers below 5020, the total delay is measured from T1 to T5, and the delay
increment is given by one-fourth of the total delay.
SERIES SPECIFICATIONS
• Minimum input pulse width: 40% of total delay
• Output rise time: 2ns typical
• Supply voltage: 3.3VDC ± 0.3V
• Supply current: ICCL = 40µa typical
ICCH = 7ma typical
• Operating temperature: -40° to 85° C
• Temp. coefficient of total delay: 300 PPM/°C
25% 25% 25% 25%
VDD GNDIN T1 T2 T3 T4 T5
Functional diagram for dash numbers < 5020
3.0ns
20% 20% 20% 20% 20%
VDD GNDIN T1 T2 T3 T4 T5
Functional diagram for dash numbers >= 5020
2000 Data Delay Devices
delay
devices, inc.
8
7
6
5
1
2
3
4
IN
T2
T4
GND
VDD
T1
T3
T5
DDU8C3-xx DIP
DDU8C3-xxA1 Gull-Wing
PIN DESCRIPTIONS
IN Signal Input
T1-T5 Tap Outputs
VDD +3.3 Volts
GND Ground
DASH NUMBER SPECIFICATIONS
Part
Number Total
Delay (ns) Delay Per
Tap (ns)
DDU8C3-5004 4 ± 1.0 * 1.0 ± 0.5
DDU8C3-5006 6 ± 1.0 * 1.5 ± 0.5
DDU8C3-5008 8 ± 2.0 * 2.0 ± 1.0
DDU8C3-5010 10 ± 2.0 * 2.5 ± 1.0
DDU8C3-5012 12 ± 2.0 * 3.0 ± 1.0
DDU8C3-5014 14 ± 2.0 * 3.5 ± 1.0
DDU8C3-5020 20 ± 2.0 4.0 ± 1.0
DDU8C3-5025 25 ± 2.0 5.0 ± 1.5
DDU8C3-5030 30 ± 2.0 6.0 ± 1.5
DDU8C3-5035 35 ± 2.0 7.0 ± 1.8
DDU8C3-5040 40 ± 2.0 8.0 ± 2.0
DDU8C3-5045 45 ± 2.25 9.0 ± 2.0
DDU8C3-5050 50 ± 2.5 10.0 ± 2.0
DDU8C3-5060 60 ± 3.0 12.0 ± 2.0
DDU8C3-5075 75 ± 3.75 15.0 ± 2.5
DDU8C3-5100 100 ± 5.0 20.0 ± 3.0
DDU8C3-5125 125 ± 6.5 25.0 ± 3.0
DDU8C3-5150 150 ± 7.5 30.0 ± 3.0
DDU8C3-5175 175 ± 8.0 35.0 ± 4.0
DDU8C3-5200 200 ± 10.0 40.0 ± 4.0
DDU8C3-5250 250 ± 12.5 50.0 ± 5.0
* Total delay is referenced to first tap output
Input to first tap = 3.0ns ±± 1ns
NOTE: Any dash number between 5004 and 5250
not shown is also available.