DDU222F
Doc #97011
DATA DELAY DEVICES, INC.
1
1/27/97
3 Mt. Prospect Ave. Clifton, NJ 07013
5-TAP, TTL-INTERFACED
FIXED DELAY LINE
(SERIES DDU222F)
FEATURES
PACKAGES
Five equally spaced outputs
Very narrow device (SIP package)
Stackable for PC board economy
Input & outputs fully TTL interfaced & buffered
10 T
2
L fan-out capability
FUNCTIONAL DESCRIPTION
The DDU222F-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 given by the device dash number. For dash numbers less than
25, the total delay of the line is measured from T1 to T5, with the nominal
value given by the dash number. The nominal tap-to-tap delay increment
is given by 1/4 of this number. The inherent delay from IN to T1 is nominally 3.5ns. For dash numbers
greater than or equal to 25, the total delay of the line is measured from IN to T5, with the nominal value
given by the dash number. The nominal tap-to-tap delay increment is given by 1/5 of this number.
SERIES SPECIFICATIONS
Minimum input pulse width: 40% of total delay
Output rise time: 2ns typical
Supply voltage: 5VDC
5%
Supply current: I
CCL
= 32ma typical
I
CCH
= 7ma typical
Operating temperature: 0
to 70
C
Temp. coefficient of total delay: 100 PPM/
C
25%
25%
25%
25%
VCC
GND
IN
T1
T2
T3
T4
T5
Functional diagram for dash numbers < 25
3.5ns
20%
20%
20%
20%
20%
VCC
GND
IN
T1
T2
T3
T4
T5
Functional diagram for dash numbers >= 25
1997 Data Delay Devices
data
delay
devices,
inc.
3
2 3 4 5 6 7 8
1
VCC IN T1 T2 T3 T4 T5 GND
DDU222F-xx Commercial
DDU222F-xxM
Military
PIN DESCRIPTIONS
IN
Signal Input
T1-T5 Tap Outputs
VCC
+5 Volts
GND
Ground
DASH NUMBER SPECIFICATIONS
Part
Number
Total
Delay (ns)
Delay Per
Tap (ns)
DDU222F-4
4
1.0 *
1.0
0.5
DDU222F-6
6
1.0 *
1.5
0.5
DDU222F-8
8
2.0 *
2.0
1.0
DDU222F-10
10
2.0 *
2.5
1.0
DDU222F-12
12
2.0 *
3.0
1.0
DDU222F-16
16
2.0 *
4.0
1.5
DDU222F-25
25
3.0
5.0
2.0
DDU222F-30
30
3.0
6.0
2.0
DDU222F-35
35
3.0
7.0
2.0
DDU222F-40
40
3.0
8.0
2.0
DDU222F-45
45
3.0
9.0
3.0
DDU222F-50
50
3.0
10.0
3.0
DDU222F-60
60
3.0
12.0
3.0
DDU222F-75
75
4.0
15.0
3.0
DDU222F-100
100
5.0
20.0
3.0
DDU222F-125
125
6.5
25.0
3.0
DDU222F-150
150
7.5
30.0
3.0
DDU222F-175
175
8.0
35.0
4.0
DDU222F-200
200
10.0
40.0
4.0
DDU222F-250
250
12.5
50.0
5.0
* Total delay is referenced to first tap output
Input to first tap = 3.5ns
1ns
NOTE: Any dash number between 4 and 250 not
shown is also available.
DDU222F
Doc #97011
DATA DELAY DEVICES, INC.
2
1/27/97
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU222F 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 40% of the total delay and periods as
small as 80% 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 DDU222F 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
V
DD
+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
V
CC
= MIN, I
OH
= MAX
V
IH
= MIN, V
IL
= MAX
Low Level Output Voltage
V
OL
0.35
0.5
V
V
CC
= MIN, I
OL
= MAX
V
IH
= MIN, V
IL
= 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
V
CC
= MIN, I
I
= I
IK
Input Current at Maximum
Input Voltage
I
IHH
0.1
mA
V
CC
= MAX, V
I
= 7.0V
High Level Input Current
I
IH
20
A
V
CC
= MAX, V
I
= 2.7V
Low Level Input Current
I
IL
-0.6
mA
V
CC
= MAX, V
I
= 0.5V
Short-circuit Output Current
I
OS
-60
-150
mA
V
CC
= MAX
Output High Fan-out
25
Unit
Output Low Fan-out
12.5
Load
DDU222F
Doc #97011
DATA DELAY DEVICES, INC.
4
1/27/97
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
DELAY LINE AUTOMATED TESTING
TEST CONDITIONS
INPUT:
OUTPUT:
Ambient Temperature: 25
o
C
3
o
C
Load:
1 FAST-TTL Gate
Supply Voltage (Vcc): 5.0V
0.1V
C
load
:
5pf
10%
Input Pulse:
High = 3.0V
0.1V
Threshold: 1.5V (Rising & Falling)
Low = 0.0V
0.1V
Source Impedance:
50
Max.
Rise/Fall Time:
3.0 ns Max. (measured
between 0.6V and 2.4V )
Pulse Width:
PW
IN
= 1.5 x Total Delay
Period:
PER
IN
= 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
Timing Diagram For Testing
T
RISE
T
FALL
PER
IN
PW
IN
T
RISE
T
FALL
0.6V
0.6V
1.5V
1.5V
2.4V
2.4V
1.5V
1.5V
V
IH
V
IL
V
OH
V
OL
INPUT
SIGNAL
OUTPUT
SIGNAL
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