DADD DDU37F-80M, DDU37F-80, DDU37F-70M, DDU37F-70, DDU37F-60M Datasheet
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DDU37F
MECHANICALLY VARIABLE
1.750
.285
.020
.187
.125
.430
.100
1.640
.100
.200
.100
.060
.060
data
3
2001 Data Delay Devices
TTL DELAY LINE
(SERIES DDU37F)
delay
devices,
FEATURES PACKAGES
• Ideal for “Set and Forget” applications
• Multi-turn adjustment screw (approx. 40 turns)
• Input & output fully TTL interfaced & buffered
(10 T2L fan-out capability)
• Resolution: As low as 0.12ns
• Minimum delay (TD0): 6ns typical
• Output rise time: 2ns typical
• Min. input pulse width: 20% of maximum delay
DDU37F-xx (Commercial)
DDU37F-xxM (Military)
• Power dissipation: 230mW maximum
• Operating temperature: 0° to 70°C (Commercial)
-55° to 125°C (Military)
• Temperature coefficient: 100 PPM/°C
FUNCTIONAL DESCRIPTION
The DDU37F-series device is a mechanically variable, FAST-TTL interfaced
delay line. The signal input (IN) is reproduced at the tap output (OUT), shifted
by an amount which can be adjusted between TD0 and TD0+ T
T
is given by the device dash number (See Table). The device operates
DVAR
from a single 5V supply and is TTL interfaced, capable of driving up to 10
TTL loads.
DVAR
, where
OUT NCVCC
DDU37F
xx = Dash number
PIN DESCRIPTIONS
IN Signal Input
OUT Fixed Output
VCC +5V
GND Ground
NC No connection
inc.
GNDIN
SERIES SPECIFICATIONS
IN OUT
GND
Functional Diagram
NCOUTVCC
.565
MAX
IN GND
.200
MIN
DASH NUMBER
SPECIFICATIONS
Part
Number
DDU37F-25 15
DDU37F-30 20
DDU37F-40 30
DDU37F-50 40
DDU37F-60 50
DDU37F-70 60
DDU37F-80 70
DDU37F-100 90
DDU37F-120 100
DDU37F-150 130
DDU37F-200 180
Note: Other delay times
available on request
T
(ns)
DVAR
Package Dimensions
Doc #01016 DATA DELAY DEVICES, INC. 1
11/12/01 3 Mt. Prospect Ave. Clifton, NJ 07013
DDU37F
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU37F 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
DEVICE SPECIFICATIONS
TABLE 1: ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL MIN MAX UNITS NOTES
DC Supply Voltage V
Input Pin Voltage V
Storage Temperature T
Lead Temperature T
CC
IN
STRG
LEAD
Delay Devices if your application requires device
testing at a specific input condition.
POWER SUPPLY BYPASSING
The DDU37F 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.
-0.3 7.0 V
-0.3 VDD+0.3 V
-55 150 C
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
Low Level Output Voltage V
High Level Output Current I
Low Level Output Current I
High Level Input Voltage V
Low Level Input Voltage V
Input Clamp Voltage V
Input Current at Maximum
I
OH
OL
OH
OL
IH
IL
IK
IHH
Input Voltage
High Level Input Current I
Low Level Input Current I
Short-circuit Output Current I
IH
IL
OS
Output High Fan-out 25 Unit
Output Low Fan-out 12.5 Load
2.5 3.4 V VCC = MIN, IOH = MAX
0.35 0.5 V VCC = MIN, IOL = MAX
-1.0 mA
20.0 mA
2.0 V
0.8 V
-1.2 V VCC = MIN, II = I
0.1 mA VCC = MAX, VI = 7.0V
20
µA
-0.6 mA VCC = MAX, VI = 0.5V
-60 -150 mA VCC = MAX
VIH = MIN, VIL = MAX
VIH = MIN, VIL = MAX
IK
VCC = MAX, VI = 2.7V
Doc #01016 DATA DELAY DEVICES, INC. 2
11/12/01 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
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