MDU28C
Doc #97040
DATA DELAY DEVICES, INC.
1
12/12/97
3 Mt. Prospect Ave. Clifton, NJ 07013
DUAL, HCMOS-INTERFACED
FIXED DELAY LINE
(SERIES MDU28C)
FEATURES
PACKAGES
·
Two independent delay lines
·
Fits standard 8-pin DIP socket
·
Low profile
·
Auto-insertable
·
Input & outputs fully CMOS interfaced & buffered
·
10 T
2
L fan-out capability
FUNCTIONAL DESCRIPTION
The MDU28C-series device is a 2-in-1 digitally buffered delay line. The
signal inputs (I1-I2) are reproduced at the outputs (O1-O2), shifted in time
by an amount determined by the device dash number (See Table). The
delay lines function completely independently of each other.
SERIES SPECIFICATIONS
·
Minimum input pulse width: 100% of total delay
·
Output rise time: 8ns typical
·
Supply voltage: 5VDC
±
5%
·
Supply current: I
CCL
= 40
µ
a typical
I
CCH
= 45ma typical
·
Operating temperature: 0
°
to 70
°
C
·
Temp. coefficient of total delay: 300 PPM/
°
C
100%
VDD
GND
I1
I2
Functional block diagram
100%
O2
O1
©
©
1997 Data Delay Devices
data
delay
devices,
inc.
®
®
3
1
2
3
4
5
6
7
14
13
12
11
10
9
8
I1
N/C
N/C
N/C
I2
N/C
GND
VDD
N/C
O1
N/C
N/C
N/C
O2
8
7
6
5
1
2
3
4
I1
N/C
I2
GND
VDD
O1
N/C
O2
MDU28C-xx
DIP
MDU28C-xxA1 Gull-Wing
MDU28C-xxB1 J-Lead
MDU28C-xxM Military DIP
Military SMD
MDU28C-xxMD1
MDU28C-xxMD4
PIN DESCRIPTIONS
I1-I2
Signal Inputs
O1-O2 Signal Outputs
VDD
+5 Volts
GND
Ground
DASH NUMBER SPECIFICATIONS
Part
Number
Delay Per
Line (ns)
MDU28C-10
10
±
2.0
MDU28C-12
12
±
2.0
MDU28C-16
16
±
2.0
MDU28C-20
20
±
2.0
MDU28C-25
25
±
2.0
MDU28C-30
30
±
2.0
MDU28C-35
35
±
2.0
MDU28C-40
40
±
2.0
MDU28C-45
45
±
2.2
MDU28C-50
50
±
2.5
MDU28C-60
60
±
3.0
MDU28C-75
75
±
3.7
MDU28C-100
100
±
5.0
NOTE: Any dash number between 10 and 100
not shown is also available.
MDU28C
Doc #97040
DATA DELAY DEVICES, INC.
2
12/12/97
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The MDU28C 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 100% of the total delay and periods as
small as 200% 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 MDU28C relies on a stable power supply to
produce repeatable delays within the stated
tolerances. A 0.1uf capacitor from VDD to GND,
located as close as possible to the VDD pin, is
recommended. A wide VDD 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
DD
-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
3.98
4.4
V
V
DD
= 5.0, I
OH
= MAX
V
IH
= MIN, V
IL
= MAX
Low Level Output Voltage
V
OL
0.15
0.26
V
V
DD
= 5.0, I
OL
= MAX
V
IH
= MIN, V
IL
= MAX
High Level Output Current
I
OH
-4.0
mA
Low Level Output Current
I
OL
4.0
mA
High Level Input Voltage
V
IH
3.15
V
Low Level Input Voltage
V
IL
1.35
V
Input Current
I
IH
0.10
µ
A
V
DD
= 5.0
MDU28C
Doc #97040
DATA DELAY DEVICES, INC.
3
12/12/97
3 Mt. Prospect Ave. Clifton, NJ 07013
PACKAGE DIMENSIONS
MDU28C-xx (Commercial DIP)
.500 MAX.
1
2
3
4
5
6
7
8
.290
MAX.
.015 TYP.
.070 MAX.
.018
TYP.
.300
±
.010
3 Equal spaces
each .100
±
.010
Non-Accumulative
.280
MAX.
.350
MAX.
.010
±
.002
Lead Material:
Nickel-Iron alloy 42
TIN PLATE
MDU28C-xxM (Military DIP)
.180
TYP.
.500 MAX.
1
2
3
4
5
6
7
8
.290
MAX.
.020
TYP.
.440
MAX.
.300
TYP.
.010 TYP.
.300
TYP.
.020
TYP.
MDU28C-xxA1 (Commercial Gull-Wing)
.520 MAX.
1
2
3
4
5
6
7
8
.430
TYP.
.020
TYP.
.040
TYP.
.100
.110
.300
.300
MAX.
.270
TYP.
.010 TYP.
.050
TYP.
MDU28C-xxB1 (Commercial J-Lead)
.520 MAX.
1
2
3
4
5
6
7
8
.320
TYP.
.020
TYP.
.040
TYP.
.100
.110
.300
.350
MAX.
.270
TYP.
.050 TYP.
.110
TYP.
.510 MAX.
1
7
8
.510
MAX.
14
.300
TYP.
.017
.050
.100
.100
.300
.300
.008
.045
.025
.360
TYP.
.065
TYP.
.065
TYP.
MDU28C-xxD1 (Commercial SMD)
MDU28C-xxMD1 (Military SMD)
.200 MAX. (Com)
.225 MAX. (Mil)
.080
.080
.510 MAX.
1
7
8
14
.510
MAX.
.017
.050
.300
TYP.
.100
.100
.650
.008
.005
.065 TYP.
.360 TYP.
.065 TYP.
MDU28C-xxD4 (Commercial SMD)
MDU28C-xxMD4 (Military SMD)
.200 MAX. (Com)
.225 MAX. (Mil)
MDU28C
Doc #97040
DATA DELAY DEVICES, INC.
4
12/12/97
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 (VDD): 5.0V
±
0.1V
C
load
:
5pf
±
10%
Input Pulse:
High = 5.0V
±
0.1V
Threshold: 2.5V (Rising & Falling)
Low = 0.0V
±
0.1V
Source Impedance:
50
Max.
Rise/Fall Time:
5.0 ns Max. (measured
between 0.5V and 4.5V )
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.
O1
OUT
TRIG
IN
REF
TRIG
Test Setup
DEVICE UNDER
TEST (DUT)
TIME INTERVAL
COUNTER
PULSE
GENERATOR
COMPUTER
SYSTEM
PRINTER
I1
O2
I2
0.5V
0.5V
Timing Diagram For Testing
T
RISE
T
FALL
PER
IN
PW
IN
T
RISE
T
FALL
2.5V
2.5V
4.5V
4.5V
2.5V
2.5V
V
IH
V
IL
V
OH
V
OL
INPUT
SIGNAL
OUTPUT
SIGNAL
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