Datadelay MDU28C-45, MDU28C-40, MDU28C-40A1, MDU28C-40B1, MDU28C-40M Datasheet

MDU28C

DUAL, HCMOS-INTERFACED

data



3

1

14

I1

VDD

FIXED DELAY LINE
(SERIES MDU28C)

delay
devices, inc.

FEATURES PACKAGES

I1

• Two independent delay lines

• Fits standard 8-pin DIP socket

• Low profile

• Auto-insertable

N/C

GND

1
2

I2

3
4

• Input & outputs fully CMOS interfaced & buffered

• 10 T2L fan-out capability

MDU28C-xx DIP
MDU28C-xxA1 Gull-Wing
MDU28C-xxB1 J-Lead
MDU28C-xxM Military DIP

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.

VDD

8

O1

7

N/C

6

O2

5

N/C
N/C
N/C

N/C

GND

PIN DESCRIPTIONS

I1-I2 Signal Inputs
O1-O2 Signal Outputs
VDD +5 Volts
GND Ground

2

13

3

12

4

11

5

I2

Military SMD
MDU28C-xxMD1
MDU28C-xxMD4

10

6

9

7

8

N/C
O1
N/C
N/C
N/C
O2

SERIES SPECIFICATIONS

• Minimum input pulse width: 100% of total delay

• Output rise time: 8ns typical

• Supply voltage: 5VDC ± 5%

• Supply current: I
I

= 40µa typical

CCL

= 45ma typical

CCH

• Operating temperature: 0° to 70° C

• Temp. coefficient of total delay: 300 PPM/°C

O2O1

100%

100%

VDD GNDI1 I2

Functional block diagram

DASH NUMBER SPECIFICATIONS

Part

Number

MDU28C-10
MDU28C-12
MDU28C-16
MDU28C-20
MDU28C-25
MDU28C-30
MDU28C-35
MDU28C-40
MDU28C-45
MDU28C-50
MDU28C-60
MDU28C-75
MDU28C-100

NOTE: Any dash number between 10 and 100

not shown is also available.

Delay Per

Line (ns)

10 ± 2.0
12 ± 2.0
16 ± 2.0
20 ± 2.0
25 ± 2.0
30 ± 2.0
35 ± 2.0
40 ± 2.0
45 ± 2.2
50 ± 2.5
60 ± 3.0
75 ± 3.7

100 ± 5.0

1997 Data Delay Devices

Doc #97040 DATA DELAY DEVICES, INC. 1

12/12/97 3 Mt. Prospect Ave. Clifton, NJ 07013

MDU28C

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

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

DD

IN
STRG
LEAD

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.

-0.3 7.0 V

-0.3 VDD+0.3 V

-55 150 C
300 C 10 sec

TABLE 2: DC ELECTRICAL CHARACTERISTICS

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 Current I

(0C to 70C, 4.75V to 5.25V)

OH

OL

OH
OL

IH
IL

IH

3.98 4.4 V VDD = 5.0, IOH = MAX

0.15 0.26 V VDD = 5.0, IOL = MAX

3.15 V

-4.0 mA

4.0 mA

1.35 V

0.10

µA

VIH = MIN, VIL = MAX
VIH = MIN, VIL = MAX

VDD = 5.0

Doc #97040 DATA DELAY DEVICES, INC. 2

12/12/97 Tel: [phone] Fax: [phone] http://www.datadelay.com