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 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 (R) 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
(c) 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 VEE VIN TSTRG TLEAD MIN -7.0 VEE - 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 VOH VOL VIH VIL IIH IIL 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 A A NOTES VIH = MAX,50 to -2V VIL = MIN, 50 to -2V
VIH = MAX VIL = 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: 50 Max. Rise/Fall Time: 2.0 ns Max. (measured between 20% and 80%) Pulse Width: PWIN = 1.5 x Total Delay Period: PERIN = 10 x Total Delay OUTPUT: Load: Cload: Threshold: 50 to -2V 5pf 10% (VOH + VOL) / 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
PERIN PWIN TRISE INPUT SIGNAL
80% 50% 20%
TFALL VIH
80% 50% 20%
VIL TFALL
TRISE OUTPUT SIGNAL VOH
50%
50%
VOL
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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