MDU14
QUAD, ECL-INTERFACED
FIXED DELAY LINE
(SERIES MDU14)
FEATURES
•
•
•
•
Four independent delay lines
Fits 24-pin (400mil) DIP socket
Auto-insertable
Input & outputs fully 100K-ECL interfaced & buffered
GND
O1
O2
GND
GND
O3
1
3
5
6
7
9
11
13
24
22
20
19
18
16
I1
I2
I3
data
3
®
delay
devices,
inc.
PACKAGES
GND
N/C
O1
N/C
O2
GND
GND
N/C
O3
N/C
O4
N/C
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
I1
N/C
I2
N/C
I3
GND
VEE
N/C
I4
N/C
N/C
GND
GND
VEE
I4
MDU14-xx
DIP
MDU14-xxM Military DIP
O4
GND
DDU14-xxC4
DDU14-xxMC4
SMD
Mil SMD
FUNCTIONAL DESCRIPTION
The MDU14-series device is a 4-in-1 digitally buffered delay line. The
signal inputs (I1-I4) are reproduced at the outputs (O1-O4), shifted in time
by an amount determined by the device dash number (See Table). The
delay lines function completely independently of each other.
PIN DESCRIPTIONS
I1-I4
O1-O4
VEE
GND
Signal Inputs
Signal Outputs
-5 Volts
Ground
SERIES SPECIFICATIONS
•
•
•
•
•
•
Minimum input pulse width:
40% of total delay
Output rise time:
2ns typical
Supply voltage:
-5VDC
±
5%
Power dissipation:
500mw typical (no load)
Operating temperature:
0° to 85° C
Temp. coefficient of total delay:
100 PPM/°C
DASH NUMBER SPECIFICATIONS
Part
Number
MDU14-2
MDU14-2.5
MDU14-3
MDU14-4
MDU14-5
MDU14-6
MDU14-7
MDU14-8
MDU14-9
MDU14-10
MDU14-12.5
MDU14-15
MDU14-20
MDU14-25
Total
Delay (ns)
2.0
±
1.0
2.5
±
1.0
3.0
±
1.0
4.0
±
1.0
5.0
±
1.0
6.0
±
1.0
7.0
±
1.0
8.0
±
1.0
9.0
±
1.0
10.0
±
1.0
12.5
±
1.0
15.0
±
1.0
20.0
±
1.0
25.0
±
1.2
O1
O2
O3
O4
100%
100%
100%
100%
NOTE: Any dash number between 2 and 25
not shown is also available.
VCC
I1
I2
I3
I4
GND
Functional block diagram
©
1997 Data Delay Devices
Doc #97042
12/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1
MDU14
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The MDU14 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 MDU14 relies on a stable power supply to
produce repeatable delays within the stated
tolerances. A 0.1uf capacitor from VEE to GND,
located as close as possible to the VEE pin, is
recommended. A wide VEE trace and a clean
ground plane should be used.
DEVICE SPECIFICATIONS
TABLE 1: ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
Input Pin Voltage
Storage Temperature
Lead Temperature
SYMBOL
V
EE
V
IN
T
STRG
T
LEAD
MIN
-7.0
V
EE
- 0.3
-55
MAX
0.3
0.3
150
300
UNITS
V
V
C
C
NOTES
10 sec
TABLE 2: DC ELECTRICAL CHARACTERISTICS
(0C to 85C)
PARAMETER
High Level Output Voltage
Low Level Output Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
SYMBOL
V
OH
V
OL
V
IH
V
IL
I
IH
I
IL
MIN
-1.025
-1.810
-1.165
-1.810
0.5
TYP
MAX
-0.880
-1.620
-0.880
-1.475
340
UNITS
V
V
V
V
µA
µA
NOTES
V
IH
= MAX,50Ω to -2V
V
IL
= MIN, 50Ω to -2V
V
IH
= MAX
V
IL
= MIN
Doc #97042
12/15/97
DATA DELAY DEVICES, INC.
Tel: 973-773-2299
Fax: 973-773-9672
http://www.datadelay.com
2
MDU14
PACKAGE DIMENSIONS
24
22
20 19 18
16
13
.530
MAX.
1
3
5
6
7
9
11
1.300 MAX.
.015 .300
TYP. MAX.
.130
±.030
.018 TYP.
1.100 TYP.
.100 TYP.
.012 TYP.
.400
TYP.
MDU14-xx (Commercial DIP)
MDU14-xxM (Military DIP)
.020 TYP.
.040 TYP.
.010±.002
24 23 22 21 20 19 18 17 16 15 14 13
.710 .590
±.005
MAX.
.882
±.005
.007
±.005
1
2
3
4
5
6
7
8
9
10 11 12
.090
1.100
1.280±.020
.100
.280
MAX.
.050
±.010
MDU14-xxC4 (Commercial SMD)
MDU14-xxMC4 (Military SMD)
Doc #97042
12/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
3
MDU14
DELAY LINE AUTOMATED TESTING
TEST CONDITIONS
INPUT:
o
o
Ambient Temperature:
25 C
±
3 C
Supply Voltage (Vcc):
-5.0V
±
0.1V
Input Pulse:
Standard 10KH ECL
levels
Source Impedance:
50Ω Max.
Rise/Fall Time:
2.0 ns Max. (measured
between 20% and 80%)
Pulse Width:
PW
IN
= 1.5 x Total Delay
Period:
PER
IN
= 10 x Total Delay
OUTPUT:
Load:
C
load
:
Threshold:
50Ω to -2V
5pf
±
10%
(V
OH
+ V
OL
) / 2
(Rising & Falling)
NOTE:
The above conditions are for test only and do not in any way restrict the operation of the device.
REF
PULSE
GENERATOR
OUT
TRIG
I1
I2
I3
I4
DEVICE UNDER
TEST (DUT)
O1
O2
O3
O4
IN
TRIG
OSCILLOSCOPE
Test Setup
PER
IN
PW
IN
T
RISE
INPUT
SIGNAL
80%
50%
20%
T
FALL
V
IH
80%
50%
20%
V
IL
T
FALL
T
RISE
OUTPUT
SIGNAL
V
OH
50%
50%
V
OL
Timing Diagram For Testing
Doc #97042
12/15/97
DATA DELAY DEVICES, INC.
Tel: 973-773-2299
Fax: 973-773-9672
http://www.datadelay.com
4
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